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Topic: overheating (Read 1481 times) previous topic - next topic

overheating

ok i have read the article on coolcats.net about the over heating and i cannot figure out what is wrong with my engine and why it is over heating. well first i took to have the radiator and cooling system to be checked it came out ok then i checked the fan clutch that was good. now i know i dont not have a cracked block or a blown head gasket. so  the only thing left was the sending unit i checked that and i had no idea what a good or bad one would look like so i just went and bought a new one. so i installed it and got everything working but it still overheats but now it over heats alot faster!!!! now the only thing i can think of is me over-tightening it. the needle doesnt even start out at the "C" its starts at midpoint and then says it overheats when im going like 10 mph for like 6 miles.... i need help real bad this problem is gonna bother me so much its gonna cause me to go mentally insane seriously. any help is appreciated thanks              -chris

overheating

Reply #1 –
Lol, a sending unit isn't going to fix your overheating problem. 

Check timing, also check the thermostat. Could be the water pump too.

overheating

Reply #3 –
My cooling system was fine and my car overheated a lot (was puking coolant).  Think about it. 





Good luck with this car.

overheating

Reply #4 –
whats happening is the gauge says its heating up but it goes higher when i start going

overheating

Reply #5 –
Is it really overheating or is it entirely electrical.  Does your fuel gauge go up at the same time?  I had a similar problem where both the Temp and Fuel would go up and max out at the same time.  It turned out to be the internal voltage regulator (I think that's what it is called).  It's a little box in the back of your instrument panel.  Basically those gauges are designed to function somewhere around 3 or 4 volts.  So the regulator turns the voltage down from 12 to the lower range.  Mine would stop working intermittently and the gauges would read completely pegged.  I hope this helps or at least gives you another idea.
Foxless :(

overheating

Reply #6 –
no just the the thing temp gauge does that now what do i do about the regulator if it is?

overheating

Reply #7 –
If you don’t think you’re running hot but your gauge is broke. Buy a meat thermostat run the car with the radiator cap off put the meat thermostat in it and read it.
And you can’t tell if your have a bad head-gasket 100% unless you do a chemical test. It picks up exhaust fumes/carbon monoxide buy the radiator cap. You can buy it at any good parts or tool store for about 10-20 dollars

overheating

Reply #8 –
I don't think he knows what's going on.

overheating

Reply #9 –
It is entirely possible that the problem lies with the gauge itself.

Have you had the gauge cluster out? If so, did you touch the needle on the temp gauge?

My '88 Blue Max has almost the same issue. Ever since I bought the car the temp gauge goes up almost all the way to H as soon as the thermostat opens. I've changed sending units three times, and the temp gauge twice--no change. It could be the IVR...but all the other gauges function fine. I've even thought it could be the wire itself. But I've measured the temp at the radiator when the thermostat opens and it's definitely not overheating. I put a temporary aftermarket buttstuffog gauge on it...right where it should be, no overheating. My mechanic "borrowed" the laser temp gun from the Ford dealer and measured the temp at the heads and headers...everything is operating in the normal range, except for the gauge. Therefore I don't worry about it, it's never caused any problems or overheating, and it's one less thing I have to fix now. ;)

Anyway, get back to us about the cluster removal (yes/no). If you haven't...and your temp at the radiator checks out fine...then it's a gauge problem.

overheating

Reply #10 –
yea i took the cluster out but it has been doing that before the cluster. and no i didnt touch the needle
 

overheating

Reply #11 –
ya know, I had a problem similar to this awhile back on my 88 V6.
Temp gauge would go nearly all the way to the hot zone on the gauge, then come back down, go back up, come back down, etc etc.

So I put on a new water pump...
Same result.
So this leads me to this question.
Have you lost any coolant out of the engine/radiator for ANY reason?
It's possible you have an air bubble in there, that's what was wrong with mine.
After about 2 to 2 and half weeks, it stopped, and now the gauge reads normally again.

If this doesn't solve it, I'd pull all the plugs, check them to find the off-colored plug(s), and then replace headgaskets...cause odds are, it'll be that or the water pump.
'98 Explorer 5.0
'20 Malibu (I know, Chevy, but, 35MPG. Let's go brandon, eh)

overheating

Reply #12 –
Quote from: FordTruckFreeek

It's possible you have an air bubble in there, that's what was wrong with mine.

I NEVER SCENE IT BUT I HEARD THERE COMMON IN FORDS