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My automatic 99vert has 273's and smells like its burning plastic or rubber when I hit the pedal hard (Unfortunately its not the tires). I am not knowledgable enought to know whether this is a heat issue due to a smaller rear-end and high rpm's or I'm burning up the engine. The engine is running at temps in the 180's when driven hard which is where they have always been. How can I trouble shoot this and where do I start? IT SUCKS BEING A NEWBIE!!!!!!!!!!!!!!
If you have 273 gears, you'll have low rpms. Look under the car...maybe you ran over a plastic bag and it's melting/burning on the exhaust.
jeff
I know that may seem odd to check, but that is a very good suggestion. I once had a plastic bag stick to an exhaust pipe on my old camaro. It wound up stinking slightly for weeks until I stuck my head under there and had to scrape the plastic off. I would check the obvious first, so give that a shot.
I have a similar issue now. I have 3.42 gears in my M6, and I smell that burnt tire smell when I get on it hard...even though I'm not spinning the tires. But I'm pretty sure I know what mine is. Stock clutches on non-runflats don't handle ATI prochargers that well. LOL
Might also be a leaky oil sending unit. This is pretty common. Oil drips onto exhaust. Sending unit is on the top rear of the engine near the firewall. Hard to access but with a flashlight you can see if any oil is there.
I had the same smell until I changed out my exhaust. A black plastic trash bag had gotten on the exhaust right behind the cats. Step on the gas, the cats heat up the exhaust and it would smell. The stuff was baked on so hard it would not clean off even with a rotary wire brush. I hope that is all that is going on with your car.