Very weird over heating

[Hesh]

Hey I have a 97 eclipse gst and the past week I've been having really weird overheating problems. So here's the deal my car over heats when I drive and accelerate but as soon as I stop it cools back down pretty much right away. I have a belt that's squealing and the battery light and brake light stays on the dashboard. I don't think I'm low on coolant and I'm going to get a new rad cap and T stat tomorrow, I figure ill do the cheap stuff first. I don't think it's a blown head gasket, no coolant in oil and no oil in coolant. I'm also going to do a coolant flush in a day or 2. The gasket that's between the down pipe and turbo is leaking I think I saw exhaust coming out of it so I know I need a new gasket. So if any one has any ideas I would love the help. Oh by the way the temp gauge doesn't ever fully go into the red just about 3/4 of the way up the gauge. So if anyone has any ideas I would love the help. I'm sorry it's so long I wanted to be through. Thanks

 

[92AWDHX40]

Do a compression test you never know the rule that out, how do you know oil isnt mixing do a test, and let us know what you find and for yourself. Check for leaks check t stat.

 

[Hesh]

Well I checked the oil and coolant and both were fine. I didn't do a compression test yet but could the belt or exhaust leaking into the bay cause it to heat up?

 

[92AWDHX40]

Do a compression test to rule that out.

 

[erkitner]

Battery and Brake light means that your alternator is going out or has become disconnected. Now as regards to your overheating, check the belt for your water pump. At higher RPMs the belt may be at a constant slip, causing your water pump to not run properly. Check the tension of it. Other than that, the only OTHER way I've heard of overheating with a properly serviced coolant system is vapor lock. (Air bubble in the Water Pump.) Check the belt and let us know!

Cheers.

 

[1995 talon]

hows the radiator cap? and thermostat

 

[Robzone0911]

Hey I have a 97 eclipse gst and the past week I've been having really weird overheating problems. So here's the deal my car over heats when I drive and accelerate but as soon as I stop it cools back down pretty much right away. I have a belt that's squealing and the battery light and brake light stays on the dashboard. I don't think I'm low on coolant and I'm going to get a new rad cap and T stat tomorrow, I figure ill do the cheap stuff first. I don't think it's a blown head gasket, no coolant in oil and no oil in coolant. I'm also going to do a coolant flush in a day or 2. The gasket that's between the down pipe and turbo is leaking I think I saw exhaust coming out of it so I know I need a new gasket. So if any one has any ideas I would love the help. Oh by the way the temp gauge doesn't ever fully go into the red just about 3/4 of the way up the gauge. So if anyone has any ideas I would love the help. I'm sorry it's so long I wanted to be through. Thanks

What you have described here sounds to me like you have a combustion leak into the coolant passages between the head and the block (blown HG). Every time I have done work on ANY car with this type of overheating issue it has been a HG failure. HG failure doesn't always mean mixing oil and coolant or coolant and oil. Just my 2 cents.

 

[VR4 Kev]

Don't leave out the possibility of it just being a bad sensor or wiring. If these are wired like 3000gt's are they have a separate sensor for gauge reading and ecu reading.

Might try hooking up a code reader, pull up coolant temp on it. Go for a drive and see if it correlates with your analog gauge reading.

EDIT:
Just checked Alldata and it does indeed use separate sensors. ECM sensor is 2-wire and gauge sensor is single wire.

 

[born2tune]

Battery and Brake light means that your alternator is going out or has become disconnected. Now as regards to your overheating, check the belt for your water pump. At higher RPMs the belt may be at a constant slip, causing your water pump to not run properly. Check the tension of it. Other than that, the only OTHER way I've heard of overheating with a properly serviced coolant system is vapor lock. (Air bubble in the Water Pump.) Check the belt and let us know!

Cheers.

I agree with this. Your belt may be too loose to charge your battery or run accessories properly and its the same belt that drives your water pump.

replace your belt properly and while the belt is out check the pullies teeth and check for wobble on the pulley it self.

 

[990dsm]

Could be the water pump shaft slipping inside the empeller at higher rpm

 

[Hesh]

Hey thanks ill check all that stuff this week I've been really busy but now I got time to work on it ill let you guys know what's good.