Saturn 1.9 auto. The car will feel like a "bump" at idle when stopped at a light or stop sign, mostly when engine is warm. Usually has more than a single bump at a time. This also momentarily shuts off the air for a split second if it is on. Hesitates on acceleration and also has bump feel like a miss, 120.000 miles. I have changed fuel filter, fuel pump, vacuum lines, cleaned the tbi, cleaned the egr, put in new plugs, AC rapid fire, and air filter. The engine continues to have this miss. No engine codes are thrown and idle speed is about 600 in gear. Has never had any problems until now and can't figure it out.
- posted
19 years ago