Ever since I bought the car it gets hot going down the highway (215) not n town tho yesterday it did n town now 230 on the way home it got hot I felt the raditior cap it wasn't hot so I opened it as soon as I did it pressure up an blew out the over flow?.. now I trying to top it off with water an open the bleeding valave an no water will come out can the thermastate b stuck

 

What sort of thermostat do you have? I'm almost certain a good quality 160 thermostat will get "stuck" open, not closed. I believe the stock ones are the opposite shitty design that gets stuck closed. Was the coolant level low? Maybe there is air in the system somewhere? You might want to follow the proper bleed procedure and make sure there is no air in it. It's also possible your WP is on it's way out....consider an electric one for an upgrade. Also, check your fans are coming on as they should.

Check it out...

1. OE design thermostat $9.99

http://www.autozone.com/autozone/par...254_1632_93207

2. "failsafe" thermostat $37.99

http://www.autozone.com/autozone/par...254_1632_93207

 

Look & see if the front chin spoiler is on If its missing it will do that Some dipshits get tired of hearin it scrape & pull it

 

this. mine broke once and only overheated on the hwy


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well put a new thermastat n car an its back to running 225 on hwy idk what to do next

 

the spoiler is there

 

Are your fans running? What if you let it idle while not moving? How hot will it get? Fans may not be running. Does your exhaust smell or look odd? Any indication of head gasket failure? Any codes on the computer?

 

fans are on, if i stop and idle or slow way down car will cool al the way off 170 or so... oil looks good car smeels lil rich like normal runs good.. i just had new hg installed 2k miles ago or less boost controller went bad an made way too much

 

Any chance you could be having some pre-ignition? Can you hear knock? At this point I would pull a plug or two and see if you are leaning out.

 

cannot hear a knock plugs look great.... changed thermastat drained system agin fought to get air out an on a 15 mile drive in 95 degree weather car got 215-225 68mph i am soooooo tired of this



i am new to lt1 reverse water thing when cap is off an u rev it should the coolent level rise?

 

i aslo tryed the headgasket tester from autozone if i did it right lol it shows all good?

 

Lol you are exhausting my basic troubleshooting process. At this point, it seems to me that you have a more complicated issue. Someone correct me if I am wrong, but we've looked at the basics, I would now consider checking to see if your radiator has a blockage, stuck thermostat, bad temp sensor for the gauge (which reminds me, see if you can read the PCM engine temp, compare it to the gauge, you might not be overheating) or a coolant flow issue within one of your hoses, heads or even the block.

I would check my temp sensors, flush the whole cooling system, replace the thermostat and then see where you are.

Head gasket tester? Im. Assuming you did a compression test then? Numbers looked good? What were they?

Stick with it man, you'll figure it out.

 

Its the tester u put fluid in an pump it up while running an if it detecting exhaust gasses then it turns yellow ....I am about to buy a new radiatior

 

Your problem just seems to defy conventional logic. When idling and sitting, it's cooler. When moving (with decent airflow and not beating the dogsnot out of it, I am assuming), it's hot. Must be a turbo thing.

Hopefully swapping the rad helps.

 

well so i was wrong about having the radiator air deflector under there i looked at my 2000 firebird an it was the same as mine so i thought it was the piece curving on bumper..../ so im trying to find one online or a pic of what it looks like with no luck

 

GM P/N 10229657

Number 11 on this diagram.

Bookmark http://parts.nalleygmc.com/ for it is the best website next to shbox.com for finding diagrams of parts.

 

man thank you so much for your help!!!! i am going to try to build one out of metal untill it comes in i hope thats it