Re: 89 Camry With Performance Issues

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Old 19 Jul 2003, 10:47 am   #1 (permalink)
Daniel M. Dreifus
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Default Re: 89 Camry With Performance Issues

if I try to
> accelerate hard the car will go, then it will lose power at about 50 mph no
> matter how much gas I give it.


Check for excessive exhaust backpressure due to internally collapsed
or clogged muffler or catalytic converter.
Try gently tapping on the exterior with a rubber mallet to see if you
hear any rattling inside - not from a loose heat shield but from
inside.
Then connect a vacuum gauge to the intake manifold, hold the engine
speed at a constant around 3,000 rpm, and see if the engine vacuum
drops off due to exhaust restriction.
I once had a shop volunteer to replace my engine -- a seond opinion
revealed an internally collapsed muffler. Different brand of car
though, he used a welding torch and somehow from watching the smoke
could tell it was blocked. So for the price of a muffler I saved the
cost of an engine rebuild.
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