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Hesitation while accelerating Saturn SL1
I have a 1995 Saturn SL1, SOHC, manual transaxle, with
145,000 Km (much on the hwy). I do change the engine oil frequently 5000Km, check fluids often, etc. In the past two weeks, when accelerating, my car hesitates, it feels jumpy, or bucking/jerking. To resolve a recent stalling problem at deceleration and low rpm <2000rpm, I did the following: - changed fuel filter - cleaned carbon out of throttle body with carb cleaner (was O2 sensor safe), and there was alot of carbon... - replaced vacuum hose between throttle body and crank case, old one was weak & almost ready to collapse. (fuel/PCV line hose 11/32" ID, 50 PSI) -used STP concentrated fuel injector cleaner in gas tank. -spark plugs were gapped & changed last summer. -replace air filter I don't think it is a slipping clutch, because the clutch feels fine and grabs when I ease up on the clutch pedal when starting in 1st gear. Although I feel this bucking in gears 1, 2, 3, not so much in 4/5....typically at lower rpm < 2500 rpm 1500 - 2200 rpm. It could be the ... -EGR valve -ignition wires -cap and rotor -MAF/MAP sensor (where are these located?) any suggestions? Thanks, Roger |
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