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#1
03-14-2005, 11:51 AM
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not accelerating
I have an 88 C-1500 w/ a newer Jasper 350, 700R4 and a new torque converter. When I go to accelerate the engine will drop @500 rpms and them slowly climb. It is also eating gas like no tommorrow. I have gone over everything and have determined that is probalby the catalytic converter. The previous engine had a blown head and head gasket and the exhaust shop said that antifreeze and fuel co0uld have got into the cat. I need anybody out there with any help or being able to confirm my suspicion.
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#2
03-14-2005, 01:58 PM
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Re: not accelerating
Connect a vacuum guage to the manifold vacuum suply. Snap the throttle and the vacuum should drop and rise (in that order) almost instantly. Hold the RPM up to around 2,000-3,000 and watch the vacuum guage. If it steadily falls, you have plugged exhaust.
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'04 Cavalier coupe M/T 2.2 Ecotec Supercharged 14 PSI boost, charge air cooler, 42# injectors Tuned with HP Tuners Poly engine/trans/control arm bushings Self built and self programmed progressive methanol injection system
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