Overheating then NOT overheating after acceleration?

ZB00B00LSv8

ZB00B00LSv8

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I havent been here for awhile so hello hello first and foremost :) But i guess its a good thing since I only frequent when there is a problem with my car that frustrates me soooo much I need someone to give me some sort of outlook :p

Ok so.. I just had my car serviced at Ford about 2 weeks ago for a window regulator, parking brake module, and AC compressor cable and the other day (after my car had been at Ford for 2 weeks) my car starts overheating. I had drove about 15 miles altogether including freeway and street and about a mile from my house after id been off the freeway for a mile, my car starts overheating as i pull up to a stop sign the decreases almost immediately back to normal by the time i drive the rest of the mile to my my house ?

It started overheating again last night after I had let my car sit idle for about 5 minutes in park then driving about a mile. It also just did it as I drove home from school. After I drove about 2 miles it started to overheat but as soon as I got on the freeway it dropped down once i caught up to speed with the others cars.

I dont think my cars actually overheating because i remember when i fixed my thermostat housing, it would overheat at stay at the highest mark and would emit smoke from the hood but now, I checked the cracks between the hood and my car and cant even tell a change in temperature degrees?

And also, when the car was supposedly "overheating" today, I turned on the heater and it only put out cold air like when at 60 degrees without ac.

Could this have something to do with my AC compressor cable or anything around the area Ford had just done work? Or whatever it is should Ford have been able to see this when they just serviced my car? I got into a little dispute with them for not even touching my car for a week while I paid for a rental and ended up getting a loaner car from them hahaha. i just hope they didnt do something to my car because i felt they lacked professionalism.

Any and all input would be GREATLY appreciated :) Thank you alllllll <3
 
i have the same problem, im not sure what the problem is yet, might be the one valve. my cost from the stealership i work at is like 150ish, if you cant find it cheaper and that is the problem, let me know i can pick one up for you.
 
That sounds like trapped air in the cooling system. The engine cylinder heads are going over temperature because of it. Most likely you have trapped air because your degas tank is cracked, and some of the other plastic in the cooling system may be cracked too. You need to have a pressure test done on the cooling system to confirm this. I assume that you have a gen II LS since you mention the parking brake module.
 
UPDATE: k so I was driving home and it did it again today once I got off the freeway but when it hit the highest temperature it didn't come back down right away and next thing I know my engine light comes on, my car starts shaking and it goes into power reduced mode. So I shut it off and check under the hood to find no signs of overheating like no raised temperature or anything and nwext thing I hear is a big gushing sound like fluid just rushed through/out of something. There's also been this wheezing noise associated with the overheating and goes away once my car over heats then returns to normal. Could this be fords fault? Like does it have anything to do with anything I just had fixed or could it be because I just stated using a different gas from what I've been using when I bought it? And how much do you think this fix might cost?

And yes I have a gen II I have a 2003 v8. :) thanks for the input guys..
 
It's telling you that it is overheating, and it has the signs of overheating, but you keep insisting that it is not. How are you determining that it isn't? Are you measuring head temperatures? Coolant temperatures? You can't tell the temperature by looking. I can't tell the difference between 220 degrees and 240 degrees by touch, can you?

The symptoms that you describe, including the noise are text-book examples of air in the cooling system. It is overheating, and you will do very expensive damage to the engine if you keep driving (if you haven't already).
 
ok so we get there is something wrong obviously.. back to could it be fords fault? does it have anything to do with their work? and how much would it be at the most expensive?? you can criticize me all day but its not going to fix my car so if you could so nicely just answer my question with a simple if it says its overheating then it is and this is whats wrong and probably what caused it. It would make my day much easier. thank you much.
 
ZB00B00LSv8 said:
... so if you could so nicely just answer my question with a simple if it says its overheating then it is and this is whats wrong and probably what caused it. It would make my day much easier. thank you much.
Click to expand...

See post #3
 
Still not seeing a price range or any kind of relation to it possibly being cause by fords work in order to reason my return for them to fix (if their doing). Thanks
 
Okay, this has been covered quite a few times, but people get upset when some of us say to search...

If you aren't going to take the time to look for the leak, then it's hard to give a good estimate. It seems like you will be going to the dealer for this. My best guess is about $1500 if they do it right and replace everything that is cracked or going to crack soon. I'd say about $300/$400 if they do it half way.

Yes, it's Ford's fault. They picked incorrect materials for the plastics.

No, it's not your dealer's fault. If you'd search, you'd see that many LSes have this issue after a certain age.


Of course, if you can't afford $1500 now (and won't do it yourself), then you'll have to afford several thousand soon.
 
it is your fan solenoid. the car overheats when you are going slow because you have lost the high speed end of your fan. does not overheat at highway speeds because the fan hardly runs or runs at low speed due to air already being forced in. it is about an $80 part located on the back side of the fan.
 
townclown said:
it is your fan solenoid. the car overheats when you are going slow because you have lost the high speed end of your fan. does not overheat at highway speeds because the fan hardly runs or runs at low speed due to air already being forced in. it is about an $80 part located on the back side of the fan.
Click to expand...

Totally unrelated. '03 w/ electric fan. Also, the solenoid is on the pump, not the fan.
LJ in disguise?
 
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