#Dodge caravan overheating

274 messages · Page 1 of 1 (latest)

jagged delta
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I changed the thermostat on a 2019 dodge caravan and now it overheats, I mixed green and red coolant cause I didn’t drain it properly, the gauge stays in the middle when I have the heat up but for example I was going uphill the other day and it overheated

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And it just doesn’t wanna take coolant down the radiator quickly, I’ve just been pouring it in the reservoir and waiting for it to suck coolant out of there the n refill it

nimble ridge
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a

vast brook
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You'll probably have to bleed it while the car is running

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I've worked on about nine billion 3.6s and that's what I've done every time

jagged delta
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Gotcha

vast brook
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Turn the heat on full blast and go until air stops coming out

jagged delta
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Well I’ll try it I guess, but I’ve opened the bleeder valve when the cars hot in idle and the radiator just keeps pouring out coolant

vast brook
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Wait so you have bled it?

jagged delta
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Yeah

nimble ridge
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wait

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bleeder valve?

vast brook
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On the thermostat housing

nimble ridge
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i was just making sure

jagged delta
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Yes, the thermostat comes with the bleeder valve on the housing

vast brook
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What brand thermostat did you buy

jagged delta
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You have to buy the whole housing on this system not just the thermostat

vast brook
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Yep

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It's one part

jagged delta
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Duralast, motorad

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From autozone

nimble ridge
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did the coolant look like one of these

jagged delta
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Yes

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I would say closer to the second one

nimble ridge
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yeh thats orange coolant

jagged delta
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So zeta, there’s no way the coolant sludged up?

vast brook
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Orange is correct in these is it not?

nimble ridge
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it is yes

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you used this, right?

jagged delta
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Yes

vast brook
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Should be fine

nimble ridge
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yep

jagged delta
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Ok so most likely I need to bleed it more

vast brook
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Did you get a solid stream of coolant out of the bleeder

nimble ridge
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Orange Coolant is OAT, prestone universal can be mixed with OAT

jagged delta
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And you say keep the hot air on until there’s no hot air? And yes after it bubbled it did stream

vast brook
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Hmmmm

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How bad does it overheat

nimble ridge
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you did use 50/50, right? or you mixed concentrate with water?

jagged delta
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Well when I tried to flush it with prestone I used distilled and drained it. I didn’t use 50 50

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Can we rule out a blown head gasket or no?

nimble ridge
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if you were having overheating issues due to a blown head gasket you'd be seeing white smoke, and disappearing coolant

vast brook
jagged delta
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Gotcha, wdym pressurize? If you asking if the coolant rises out of the radiator, it does quickly

nimble ridge
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immediately after turning the engine on?

jagged delta
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And like I said previously I’m relying on the reservoir sucking coolant and filling the reservoir

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Well idk about immediately, but after a few minutes

nimble ridge
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wait

vast brook
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After a few minutes is normal

nimble ridge
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the 2019 reservoir isnt pressurized

jagged delta
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No it just has the tube going to the radiator and has a cap

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Just a plastic cap

nimble ridge
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if you had a blown head gasket it would be overflowing the reservoir

jagged delta
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Gotcha

nimble ridge
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at least, if it was blown into a coolant passage

jagged delta
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It’s not good to rely on filling the reservoir right?

vast brook
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If you fill the radiator and cap it as soon as the thermostat opens and it starts trying to dump coolant then it should be fine

jagged delta
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It doesn’t do that, every 5 minutes I have to keep adding coolant, it only takes a handful of coolant every time

nimble ridge
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well then keep adding coolant

jagged delta
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Wait I misread that

nimble ridge
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and make sure to cut it 50/50 with distilled water

jagged delta
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Yeah I’ll try that tonight

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But the coolant isn’t a 50 50 mix

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Its prediluted

nimble ridge
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??

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prediluted is 50/50

jagged delta
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It says do not add water

nimble ridge
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yes

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because its already diluted 50/50

jagged delta
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So why should I add distilled

nimble ridge
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because you said it isn't 50/50

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but it is, so dont

jagged delta
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Yeah I added distilled when I used the coolant flush, whenever I filled it with the prestone coolant I don’t add water

nimble ridge
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i

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c

jagged delta
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Confused, why did you tell me to add distilled

nimble ridge
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coolant comes in two forms, referred to as concentrate and 50/50

nimble ridge
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I read this and thought you meant you bought concentrate

jagged delta
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Ohhh no I bought prestone coolant flush

nimble ridge
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i c

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yeh just add a little coolant at a time once the thermostat opens and it keeps burping air

jagged delta
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Sounds good, it just seems repetitive and seems like it doesn’t want to take coolant cause it takes it very slowly

nimble ridge
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some cars just do, unfortunately

jagged delta
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So that’s normal is what I assume

nimble ridge
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it can be a pain in the ass

jagged delta
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Gotcha, well thanks, my Chrysler 200 gave me no problems whatsoever when I changed the thermostat

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The thing that sucks is I had to replace the whole housing at one point which was like 150 and the thermostat was like 10 bucks, in this case the whole housing and thermostat is like 27 bucks

jagged delta
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@upper hollow I have a vacuum
Pump, what other tools do I need to put coolant in the system faster

jagged delta
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@vast brook ngl I think the head gasket is blown

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The reservoir filled up higher when I just drove it and coolant is leaking

vast brook
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Do a block test

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You can get the tool for like $15

nimble ridge
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That is suboptimal

jagged delta
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@nimble ridge

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Which one should I believe

vast brook
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Also it has to go on the rad

pseudo moat
# jagged delta

ngl dude, id take it to a shop. coolant flushes and leak detection dont tend to be all that much

jagged delta
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It wasn’t necessarily overheating but it was in the middle of the gauge

jagged delta
jagged delta
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And the guy I always go to isn’t accepting any cars rn, I’m gonna drain the oil and check it today

pseudo moat
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you need to find that leak

jagged delta
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It hasn’t been overheating I’ve had the heat on so it dissipates the air

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And wdym by leak, I’m not sure it’s leaking

pseudo moat
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you said before it had a leak no?

jagged delta
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Well there was coolant deep in the engine but I was thinking it might of sprayed back

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Like when the tank overflowed

pseudo moat
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if theres coolant in the resevoir it will atleast be partially in the engine, air is in the system, it really shouldnt be causing this much issue, all you should have to do is run the car with heat on max and just top up the coolant as it goes down from the radiator then resevoir

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if not there is an issue else where

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did you have these issues before chaning the thermostat?

jagged delta
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Yeah that’s the thing someone said it takes so long to to bleed it but I’ve had this going on for like a week now that I drained the coolant properly this time, and no

pseudo moat
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how cheap are these thermostats?

jagged delta
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Autozone, 21 bucks

pseudo moat
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are you sure you fitted the thermostat correctly?

jagged delta
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Yeah, there’s not much you can do wrong with this one, I followed the way that the last thermostat was on there, it was the whole housing I had to replace, also, I lost that pinching hose clamp so I just put a different hose clamp on there

pseudo moat
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and the housing isnt leaking?

jagged delta
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Don’t think so, I’ll check later

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I replaced it with the second hose clamp

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It’s like wtf it’s just a thermostat and it led to all these problems

pseudo moat
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yea it should be fine, after checking that hold the upper radiator hose after cold start. it might take a while but the upper hose should get hot very quickly not gradually. might be a defective new part

pseudo moat
jagged delta
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Well I would absolutely hope so, you can’t really check if the thermostat is opening can you, the only indicator is if the hose is hot but that doesn’t guarentee it right?

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I really have my doubts about the head gasket

pseudo moat
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its fairly guaranteed, if the hose is very slowly coming up to temp it means its leaking coolant through.

pseudo moat
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the boiling coolant is a dead obvious sign there is air in the coolant or the thermostat isnt opening

jagged delta
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When you drain the oil and you get oil with no coolant will that guarantee a good head gasket

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Gotcha

pseudo moat
jagged delta
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So really my best option is to maybe replace the thermostat again? And if it doesn’t work take it to a shop? Or shop first

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Sounds good, mind if I ask, are you a mechanic?

pseudo moat
jagged delta
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Sweet, I’d like to get into it but I’ve got really bad sciatica, shoot nerve pain down to the foot. I wouldn’t ever be a mechanic for a while tho

pseudo moat
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what are you doing exactly when you bleed it?

jagged delta
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So yesterday for example, I opened the bleeder valve which didn’t bubble at first, but I kept it open as I drove to the store and a couple miles more and came back home, closed it after

pseudo moat
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what

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erm

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youre not meant to drive with the bleed screw open

jagged delta
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Well I did cause I thought it would get Hella air out as the thermostat would open

pseudo moat
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bleeding the cooling system is done with the car idling

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and you sitting over the engine bay topping up fluids as they go down

jagged delta
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Yeah well when the cars in idle the coolant just flows up

pseudo moat
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thats because the thermostat is closed

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you need to stay there until car reaches op temp

jagged delta
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Well even at regular temps it still flows up

pseudo moat
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it will do bc air is in the system

jagged delta
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I guess I could try a new thermostat, all things are leading to that but I had good luck with autozone

pseudo moat
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no need lol

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let me find a video guide that you cant go wrong with

jagged delta
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Ok

pseudo moat
jagged delta
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No, unfortunately

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Random, do you have a dope tool box set up? can I see it?

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Good deal isn’t it?

pseudo moat
jagged delta
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If I get this, will the other caps work for oil?

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Gotcha

pseudo moat
jagged delta
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Yeah

pseudo moat
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I sent you this video before i think

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what went wrong when u tried it?

jagged delta
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You did, well the last time I tried, the bleeder didn’t bubble, I damn near need that funnel
Huh

pseudo moat
jagged delta
pseudo moat
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and its also very messy

jagged delta
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Not working with too much

pseudo moat
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thats plenty for small work

jagged delta
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It is, I plan on going really big, I’ve got a garage that’s huge, people mistake it for a house but it’s so so overfilled, I’m also about to move so there’s like no point to clean it up

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I’ve got a beautiful 1959 fleetside Apache that I’ve always wanted to work on in that garage

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Gonna get this one instead, do these caps look like they fit dodge, Chrysler oil reservoirs or whatever you call it

pseudo moat
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open rad cap, resevoir and gently crack bleed screw

top up coolant with engine off until it arrives out bleed screw

close bleed screw

start engine with heat on max.

watch fluids dont let them get low.

because you have so much air id shut the car off every 3 mins and crack bleed screw with engine off just to burp it as it comes up to temp.

after doing that 3 or 4 times wait for it to reach normal temp by running it again.

when it reaches normal temp, engine off and burp the bleed line until the coolant stream that comes from it is a stream not stuttering.

close screw

run car for 5 mins and watch if levels go down, if they do engine off and bleed screw again, if not take it for a 5 min drive pull over and check resevoir level

when you drive make sure everything is closed

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^hand written guide of what i would do just to help if the video dont make sense

jagged delta
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Appreciate that

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Just bought the funnel kit

pseudo moat
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thats good, main thing just to keep in mind is the only way you will suck air in is by running the car with the bleed screw cracked or running car with the fluid low in the rad top up. so just make sure to shut engine off when cracking bleed screw

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and make sure dont run top off dry

jagged delta
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Cool

jagged delta
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@pseudo moat so I got the funnel, however the car didn’t wanna take coolant, I guess the thermostat didn’t open up but the gauge line was right before the middle so I would of thought it opened up but ig not

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I thinking of taking the thermostat out and pouring boiling hot water on it to open it, at least 190 degrees f

jagged delta
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@pseudo moat I tested it on the old thermostat and it opened up as it should, it was working, now I think the problem wasn’t ever the thermostat

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The car actually has 59,000 miles on it

spice scarab
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I'm lazy to read, what have you already inspected

jagged delta
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Good thermostat, replaced it, seems to be fine on coolant however coolant in the reservoir gets low randomly, it’s been about a 3 week problem

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I don’t feel like it could be the water pump cause the cars at 59000 miles, got it from the dealership

spice scarab
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Cooling fans?

jagged delta
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Like the radiator fan?

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Haven’t necessarily checked that

spice scarab
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Cooling fan clutch or

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Brushed motor

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It would be funny if the Polarity were reversed shooting air out the grill

jagged delta
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Don’t even know honestly, I have an above average understanding of engines but compared to a mechanic I don’t know much

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Haven’t heard of the cooling fan clutch or brushed motor

spice scarab
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Let me bring the service chart on that issue

jagged delta
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Also I just used the code reader and the code still pops up on the car but on the reader it says 0 dtc

jagged delta
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Definitely, i got it from autozone and it was the complete housing so you almost can’t install it wrong

spice scarab
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Oem or just generic

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hmm idk if you can view the freeze frame on your side of the end

jagged delta
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Just generic duralast motorad

jagged delta
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So kinda confused, what should I try first

spice scarab
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inspect for external leaks,

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where's the coolant magically going?

jagged delta
jagged delta
pseudo moat
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It's not the water pump if its pressurising as you described

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You bled the system properly yet?

jagged delta
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Yes I did, I got the funnel but that didn’t even help, I guess the air was already bled out

jagged delta
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I filled up the funnel with coolant and the radiator wasn’t taking it, the car was idled and just under the middle mark, besides, the bleeder valve only shoots out a solid stream of coolant and no bubbles

pseudo moat
jagged delta
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It shot out consistently

jagged delta
jagged delta
obsidian kayak
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just get a wire to replace the ground strap

jagged delta
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Fs

jagged delta
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How big of a problem is it and what are possible fixes

obsidian kayak
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thermostat is fucked lol not that complicated

jagged delta
obsidian kayak
jagged delta
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I put the oem thermostat back in

vast brook
jagged delta
jagged delta
vast brook
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Idk why I didn't see this earlier

jagged delta
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Idk maybe the thermostat is stuck open or some shit but it’s not reaching temps

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Fuck it at this point

spice scarab
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Had a case on a jeep where they replaced the thermostat with a generic one, customer was pissed off when they were quoted with a replacement of the oem part supposedly thinking new part means good and should be considered crossed out of possibilities

jagged delta
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So I saw that the code was relative to heat so I replaced the thermostat and it led to this mess lmao

jagged delta
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And they were pissed for being quoted with a new oem thermostat?

spice scarab
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Customer took it to another shop, they put a generic one on, check engine comes up, surprised with another one.

jagged delta
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So im getting into fixing cars much more, I’ve done a lot of shit on cars but wanna get better and do more, any recommendations on certain things I should try to fix to get better? @spice scarab

spice scarab
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I'd read manuals on every car out there, but at the same time work on them by trial and error as anything will humble you

jagged delta
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Turns out the code was calling for car not getting to temp so did all that work for nothing haha

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Thinking of doing a timing chain next

vast brook
jagged delta
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Not with the chain but I’ve done plenty of other things b4

vast brook
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And if you mess it up the engine is toast

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Do you really think it needs done?

jagged delta
ivory forgeBOT
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GG @jagged delta, you just advanced to level 12! Chat more to level up and earn top roles!

vast brook
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Or throwing timing codes?

jagged delta
vast brook
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Nothing is wrong

jagged delta
vast brook