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intermittent miss 200 1987

posted by  someone claiming to be Brad on  Mon Dec 29 14:36 CST 2003 [RELATED]

The car (130,000 miles) has a miss which at times is just a single hiccup and at other times you would think the pistons are swapping holes. Then again, it might run just fine for 10 miles. It makes no difference if the car is cold or hot, it starts fine, has never stalled completly and never acts up at idle or when hooked up to diagnostic equipment in the shop. The two mechanics are as baffled as I am. So far these items have been eliminated or replaced...fuel filter, plugs, cap, rotor, plug wires, ox sensor, air mass meter. Fuel pressure is ok. Wiring harness was looked at too. The only things which are out of specs. are vacuumn (which is low at all speeds 315.3-321.4 mbl.) and the spark duration which is high 2.71-2.87. Any ideas????? Thanks






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