My 1993 Buick Roadmaster hesitates and jumps going up hills. I notice that if I take my foot of the gas and then push on it again, the car then goes up the rest of the hill just fine. It's been doing it for years and doesn't seem to get worse or better. Asked three mechanics and they don't realy seem to know. One said might be electrical the other said might be transmission. The third said needs a tune major tune up which I did but there's no change I'd apreciate any help. Thanks.
THROTTLE POSITION SENSOR COULD BE THE PROBLEM. THANKS FOR USING FIX-YA AND FOR ANY COMMENTS. PLEASE KEEP ME POSTED. GOOD LUCK
Have the fuel pressure checked the fuel pressure regulator valve may be acting up, it should be at 30 psi or greater at idle. It may also be a Oxygen sensor causing the car to run lean on acceleration, if it has never been changed have the primary or bank 1 O2 sensor changed out they should be done every 60,000 - 80,000 miles. If all this has been done there may be a vacuum leak somewher in the system and by the way all vacuum hoses should have been checked during the tune up.
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