bad idling trouble

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I own a 1991 pontiac firefly 1.0L, 3 cyl, auto transmission. The car runs great when cool or just starting up. When its up to temperature and in either drive or reverse it idles very sluggish and the rpms are way down. It doesnt matter what the weather conditions are outside. It stalls only sometimes but the car shakes pretty bad. In neutral or in park the car is a bit better but still a little rough. Its had a full tune-up including cap, rotor, wires, plugs, fuel filter, air filter, pcv valve but it was doing this before the tune up. Its progressively been getting worse. Oh, it burns a little bit of oil as well, im not sure if that could have anything to do with it. about a quart every 1500-2000 miles. I appreciate anyones advice or input on the problem, id like to ry to fix it myself. Thanks, Kenny.

posted by  kenscoz

check you fuel injectors

posted by  blk90gtz

u may have a vacume leak..or low compression...

posted by  99hatch

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