Still running hot after new t-stat & burp!!?!?!?!!!

I have cried about the fans back on another thread started by Chase. I also think the cap is bad (been there done that).

And yea, I also drove home, from SoCal with no T-Stat with no issues...

 

True enough Adam. Not a complex deal at all.
I keep saying fans or better to say fan (singular) because I had a HS fan go out...same symptoms as Chase...then shortly after had a LS fan go out, same symptoms...and I could hear the HS fan working no problem, but when the LS fan went out, you couldn't hear it regardless if it was ON or OFF...checked it with a flash light to see if it was working, and obviously it wasn't...changed it, no problems since.

 

10-4 on that Ron...i've never personally had a cap go bad on me, but I've had a few friends with other makes of vehicles have that happen. Chase said he swapped caps from the Jeep, so he should be good there.

 

Yea, I just talked with Chase. He has in fact switched caps. He thinks he may have it bled this time and is going to go for a spin. If this fails, Chase will delete the stat.


I would think that if the water pump went bad (impeller) that it would make one hell of a racket????

Are these pumps not like old school in that if the impeller or bearing goes bad it starts leaking through the leak hole????

 

You saw them working, or heard them working? Not to beat a dead horse, just asking.

If you pull out the stat and it's still happening, it has to be the pump.

 

lol, I bet you pound on the return key on the keyboard and bang on the elevator buttons too

You may have to burp it a couple of times. Or just once again if you take the tstat out.

So you burped it, visited the gas station, came home and didn't let it cool all the way down and burped it again right? Did you get more air out this last time? If you did then there could still be more in there. You'll know when you're done when you check if after it's all the way cool and it's full to the bleeder. Then you will be ready to move on to the next possibility...

ya know, all this stress is probably effecting your sperm count and your future family. It's not worth it. You should probably just deed the car over to me.

 

Chase, your feel for air from the fans may be from the low speed fans?

When the high speed fans come on, you can really hear them. They are loud.

I really think that your low speeds are all that is working?

If the pump was bad, you would have max temps immediately, not when you slow down in traffic or come to a stop at a light...

What temps did you start out with on this last drive?

I know you put a different cap on (from the Jeep), but could you humor me and go purchase a NEW Moroso 180 - 210 cap, papapaleeeeeeeeease?

 

Yes you should do it again. You should keep doing it until you don't get any air out of the bleeder. Here's the thing. The water goes in here, and then down there and then up there and then through there and then a bunch of other places before it gets back to where it started. You can get bubbles in a lot of places. So now when the tstat is open and you're idling, most of those bubbles are going to end up at the high point... that would be where the bleeder is. but when you're running the engine at speed the water is circulating much faster and more violently. So if there's air in there it's kind of like water going down a rapids. You need to run the engine at speed to move those bubbles trapped elsewhere but it's also going to take some air with it from the high spot too. most of the air will end up at the high spot so if you bleed it a few times you're going to get all of it. Cool down is good because the coolant contracts a good bit.

So, if you take the t-stat out you don't have to wait for it to open to get circulation. As soon as you start the engine the coolant will be circulating through the entire system and hopefully those (possible) random bubbles here and there will come to the top immediately -- and out the open radiator cap if you took it off. So start the car and you pour your anti-freeze/water mix into the radiator until it's topped off while it's running. Then you (gradually) increase the rpm and see if any bubbles work their way out. If they do then you top it off and keep going for a while until you don't see any more air come out. Problem is, when decent size bubbles come out it's going to splash some coolant, when you rev the engine it's likely to splash some coolant. Could be messy.

Then you MAY be done (more than likely). but there's always a chance that some trapped air works it's way out later. usually that amount of air isn't going to effect anything anyway.

I'd say do this:
Get the radiator cap that Ron wants you to.
Get a replacement tstat with a bleeder hole in it.
Replace the t-stat and radiator cap.
When you're replacing the t-stat put it back together without any tstat in there and run/fill it without the radiator cap on (you'll need to plug the lines to the overflow tank).
Then put the replacement tstat in. unplug the lines to the overflow tank and bleed it through the bleeder plug.

If that doesn't fix it then it's almost for sure not an air problem. That leaves the fans and the waterpump.

 

chase - if i was in your shoes.....and i have been......

remove cap from overflow tank
start car
let run until t-stat opens
watch the overflow tank as it bubbles and gurgles
put lots of old towels around the area of the overflow tank to catch coolant spillage
add more fluid as it drops
keep watching until no more air bubbles come out.

this can take a little while, but it works!! the bleeder point is actually not completely the highest point of the system. part of the fluids travel higher up to heater core. this is where my air pockets were. i could actually here them gurgle inside the car like it was right under my dash!!! lol anyway, do the messy burping with the rad cap off. this is very effective and quicker than burping, drive, cool, repeat.

also, check the high speed fan settings on the pred, and then make sure it is turning on!!! i have lost numerous fans, both high and low and can speak first hand. when i would lose a low, i never knew it until i would see the car running consistently warmer than normal. not overheat, but a couple degrees warmer, ie, instead of the usual 185, i might have seen 190 - 192.... basically right at the point when my high speed fans would kick in. the car would go back down to normal when i started moving.... when the high fans went out, that was easy to notice because i would not hear them, and the car would get real hot!

but heres the deal...... even when i was haveing issues with the fans, once the car got moving, it would cool down. once the air was moving over the radiator, it would cool. this tells me the water pump is working and the coolant was moving through the system and going through the radiator. do your temps fall as the car moves???? if you hear fans, and know the t-stat is not failed, you should at least see the temps begin to drop as the car get moving...... if not, i would seriously look at the water pump. considering this happened all of a sudden, might not be that far off the mark......

whatever the case brother, i know its frustrating, but keep a positive frame of mind!! all will be good soon brother!!! especially once i send you your new toys!!! lol

 

ok....heres a quick question and diagnoses.....if the car is hot and the upper radiator hose is hot and the fans are on blowing hot air it's not an airpocket......chances are your water pump is shot.....yes it happens the impeller blade is plastic.

If the fans are on blowing cool air then it's an air pocket.

And not to be a dick but you did put the T-stat in facing the right way .....right?

 

Dude, don't ever think i'm ever aggravated with YOU. I want to help, just like the rest of your pals...we just want this problem resolved. We're all trying to help and give you good advice from experiences we've had.
Like Chris said, if the temps fall while driving, you know you have flow from the system, you're just missing AIR FLOW through the radiator from THE FANS. :whistle: while not in motion.

You've gotten some good stuff from this thread. I'm sure you've at least learned a few things. If I was there, i'de still be working under the hood right along side of ya bud...that's what we're here for.

 

ummmmm, yes erik.... you are a dick..... but you are a smart dick when it comes to these cars so we keep you around.....:ronlove:

you can kick me in the nutz in feb!!! lol :stars:

 

I don't know Chris. I don't think that carbon fiber cup is going to save you. Last pic I saw of Erik a couple of years ago, he was sitting on the ground with the rear end of a charger jacked up on his left knee while he was changing the half shaft with his bare hands...