Question about 1995 Chevrolet Camaro

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My son has a 1995 camaro 3.4 L engine. Recently there's been a cooling problem. Sometimes when he goes out it runs fine with the temp around 180/190. I put in a 180 thermostat.Sometimes the temp goes up almost to the red and then drops down about 1/2 way. It will then go up and down between 1/2 and 3/4. The elec. fan kicks on, and I put on a new w/p about 1 year ago. After using the car and letting it cool the coolant level in the raditor is low, needing 8-16oz to fiil it back up. There's no leak, so I think the manifold gasket is leaking and it's burning coolant, but that much would cause the engine to run really rough bit it isn't. I can't figure out why the temp gauge shows fine sometimes, and othetr times it seems to indicate hot. Could the temp sending unit be going out, sending eratic signals? If the intake manifold gasket is leaking, how hard it it to change out? the fuel rail looks like a bit of a problem to take off. Any help/suggestions appreciated.

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  • Anonymous Mar 16, 2014

    Start car after short time monitor for engine temp runs up to 226F sits for a bit then plummets down to and stays around 198 to 207. Occasionally goes up to 212 but drops back to 200-205. Engine not overheating but is discerning to look at. Any advice. Thank you

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The 3.4 L engine is problematic. My Camaro started overheating intermittently and my mechanic said he was afraid the head gasket was going. Hoping that it was anything else, I replaced everything in the cooling system from the radiator back. It kept overheating, but not consistently. Some days it ran fine and other days it ran into the red zone before the engine was even warm. And despite not leaking, it was down about a quart of water every time I drove it. Finally, it started running rough and eventually it was undrivable. It was in fact the head gasket -- a common problem with that engine. You can't replace the engine; Chevy doesn't support it any more, there is no crate engine that fits and the cost of replacing the head gasket is close to or exceeds the value of the car, since most mechanics want to drop the engine and tranny out the bottom to get at it. I got lucky and found someone who did the work without droppng the block and had the heads remilled. It still cost over a grand, but I love my car so much that I would have replaced it anyway. I've been driving it for close to two years since then. At 188K, I know it's not going to last forever, but the last gen Camaro is the last beautiful American car and driving it gives me so much pleasure that it's worth it. Good luck.

Posted on Aug 10, 2008

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