Need some serious help before i damage my car.

**BillBoost37** · 07-16-2015

Originally Posted by bobc455

I'm afraid that if your coolant level is so low that you're losing it... maybe through an intake gasket (although I think your year came with metal gaskets from GM).

You probably lost a significant amount of coolant for it to heat up so badly, if that's the problem. If your radiator and overflow is full, then you have a flow problem of some kind, and a flush might be a possible solution.

Bob, we'd want to check that the temp gauge is actually correct first, before we assume an overheat situation right?

**Shawn Rollick** · 07-16-2015

Originally Posted by BillBoost37

Bob, we'd want to check that the temp gauge is actually correct first, before we assume an overheat situation right?

So the thermostat could be running to low and not letting the coolant flow?

**J57ltr** · 07-16-2015

He is saying you should scan it first to make sure it's not just the gauge that is the problem.

**J57ltr** · 07-16-2015

I also think everyone is also assuming you just purchased the car, is this correct?

Jeff

**SubwayGuy** · 07-16-2015

Originally Posted by blueguy

Anything north of 220* is too hot in my opinion.

Sounds like it needs some work...either the t-stat is on its way to sticking...fans are crapping out...or the thing needs flushed. Either way, running that hot isn't normal.

Any engine codes?

Bingo Bango.

**Shawn Rollick** · 07-16-2015

Update: Bought pre-mixed coolant. uncapped radiator when cool, some coolant shot out as there was still pressure, filled with coolant to the top, filled the overflow bin, drove car for 30 minutes on my lunch break. thermostat stays 1/8th under the middle of the gauge, and when running it hard goes 1/8th over the middle. I am hoping this will last.
Thoughts?

**J57ltr** · 07-16-2015

You did use the same coolant that was already in there correct? Keep an eye on the overflow bottle.\

Jeff

**Shawn Rollick** · 07-16-2015

Originally Posted by J57ltr

You did use the same coolant that was already in there correct? Keep an eye on the overflow bottle.\

Jeff

Yes, same coolant. i will check the bottle when i get home from work 5:00 P.M. PST

**LeadfootCJ7** · 07-16-2015

Originally Posted by BillBoost37

Bob, we'd want to check that the temp gauge is actually correct first, before we assume an overheat situation right?

Exactly, factory gauges are known to be off of many cars. Often referred to as dummy gauges. On my truck its off. It quickly warms to right at 210 and stays there. I put a Dakota Digital Gauge on it. I also ran an autometer of some sort for a while to verify and the factory gauge shows 210 when the truck is running 199-220. It never moves. My truck has never gotten hot, but a few I know who tow very heavy up grades say it stays there and almost instantly goes from normal to 250 (red zone) once its overheating. No warning. I have heard of this with many other cars too. The GP's may not be much better.

**SubwayGuy** · 07-16-2015

Originally Posted by industrialfish

Fans don't turn on until like 219 degrees, but still sounds like you are running hot. Maybe need a new thermostat and possible have air in the system. Temp sensor only measures coolant in the engine block, and if there is air trapped under the thermostat it won't open to circulate the cooler coolant from the radiator into the engine.

There is a brass 7mm bleeder screw on the thermostat housing.

Gonna have to disagree with you. My fans kick in well under the 210 mark. Not until the cars at like 185 mark for me.

**Scottydoggs** · 07-16-2015

id get a junk yard used coolant sensor and change it. its the sensor under the t stat in the lim.

new ones are know to be bad new in the box. so either used, or find a delco.

that temp sensor sends two signals, one to the dash gauge, the other to the pcm, the pcm tells the fans to come, and that part works you say cause the fans come on. and it dont seem like its really over heating. so the dash side of the sensor is broken likely.

get a scanner on it, t app is cheap, it will tell your what the pcm says the temp is.

**J57ltr** · 07-16-2015

Originally Posted by 01Grand PrixGT

Gonna have to disagree with you. My fans kick in well under the 210 mark. Not until the cars at like 185 mark for me.

You have an 01', 05' and later the fan does not come on until between 217-219*.

Jeff

**SubwayGuy** · 07-16-2015

Originally Posted by J57ltr

You have an 01', 05' and later the fan does not come on until between 217-219*.

Jeff

Oh really? Seems kind of dumb in my opinion.

**Scottydoggs** · 07-16-2015

true story..... as long as i had a 05 bin open, why not right?

**J57ltr** · 07-16-2015

Holy crap I hope I never hear the high speed fans. Thanks for the confirmation Scotty I haven't been able to pinpoint the exact turn on temp with my Torque App but that about sums it up.

Jeff

**BillBoost37** · 07-17-2015

Scott...thanks for posting the pic.

That's exactly what I was saying, the fans are programmed for a temp. In the OP's first few posts, I was pretty sure I read that fans were kicking on at a higher temp than seemed correct. Hence my suggestion on checking temp.

Now that you found pressure in a cool coolant system, that is also concerning. I would start by swapping the radiator cap.

**HighOctaneRacing** · 07-17-2015

I would just changed the T-stat as well. Cheap and easy.

Sent from my LG G3

**BillBoost37** · 07-17-2015

Originally Posted by HighOctaneRacing

I would just throw that effing T-stat across the street and bounce it off the pavement as well. Cheap and easy.

Sent from my LG G3

Fixed that up for ya

I can check temp faster than a t stat...and I don't wait for the car to cool to do a stat

**CrazyGuy03** · 07-17-2015

Most of us at one time or another had the fan connector burn out Unplug it and see if it's burnt up inside

**HighOctaneRacing** · 07-17-2015

Originally Posted by BillBoost37

Fixed that up for ya

I can check temp faster than a t stat...and I don't wait for the car to cool to do a stat

Lol thanks!

Sent from my LG G3

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