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Old 04-17-2012, 01:07 AM   #1
xxGriffonxx
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Honda prelude misfiring pinging

Hey i have a 98 prelude. Everythings stock. Ive been having a horrible misfiring and pinging problem. it hesitates and stutters off the line under wot it cuts out hard and pings from 5k on. At first it was just like it would cut out and start accelerating hard again and would only do it when engine was hot(closed loop). Now it just cuts out and pings. Its also been having troubles starting from sitting lately. I got a code for a p0171 wich is mixture to lean. I cleared the code and it hasnt returned. Usually means dirty maf. But hondas use mapping system. I think it may be a fpr but not sure. I ordered one and have it on the way. I also been having bad gas mileage. So far this is what ive done. Cleaned egr valve. Cleaned egr ports, new plugs, wires, Distributor, cap, rotor, ignitor, icm, coil, o2 sensors, fuel filter, timing belt was replaced before i bought motor about 20k miles ago, knock sensor, im probably forgetting stuff. This issue has been a huge pain in the rear for me for abouta year. Im hoping the new fpr i get will magically solve my problems but im doubting it. I need an expert!
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