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There are just too many different variables at play here. Could even turn out to be the PCM itself. Take it to a tune-up shop for diagnosis.

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vacuum lines

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It could be the vacuum lines, or it could just be that its running too hot, the average temp for a v8 92 camaro is about 220, but when u change the thermostat, and rewire the fan so that its always on, it cruises at about 180, and u pick up about 15hp making up for that slugish acceleration and keeping a smooth cruise. try swaping the maf sensor the wire filament usually have fibers from cheap wet air filters interfere with the fuel mixture signal sent ftom mas air flow sensor g

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โˆ™ 2013-03-31 01:46:14
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Q: Why does a 1991 Camaro RS run fine when cold but when warmed up have sluggish acceleration and surge when cruising at a steady speed?
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