Show all posts by userDiscussion of Boxsters and other Porsches |
Update. I had all of the tests performed and everything checked out fine. Weird, I know I didn't imagine the problems or the check engine light. The car is driving fine now. Oh well.by keithl - Main Forum
QuoteMarcW does not fail in a way that results in an engine being fed too much fuel. If the AOS affects the air fuel mixture it does by leaning it out and causing the DME to possibly reach its enrichment limit. Now there can be a curious side effect in that teh AOS leak can be a large one at idle, but at higher rpms drop off to near nothing. If the DME richens the mixture to compensate for a failby keithl - Main Forum
QuoteBruce In Philly (175K+) If my memory serves me (and it isn't doing that too well lately) I had an overly rich mixture that was caused by a faulty o2 sensor. Shouldn't you get the sensors corrected as they feed data back to the computer to then change mixture? That would be the nice if that was the cause. It doesn't seem to be the AOS.by keithl - Main Forum
QuoteMarcW Quotekeithl 99 with 62,000 miles. I had an intermittent problem (happened twice) with the car not accelerating properly and at times almost stalling. No CEL though. Car had been working fine for two weeks than CEL Comes on. I get P1129, P0154, P1127. Is it reasonable to assume this was causing my accelerating problems? Is my best course of action to replace all the o2 sensors? Wouldby keithl - Main Forum
99 with 62,000 miles. I had an intermittent problem (happened twice) with the car not accelerating properly and at times almost stalling. No CEL though. Car had been working fine for two weeks than CEL Comes on. I get P1129, P0154, P1127. Is it reasonable to assume this was causing my accelerating problems? Is my best course of action to replace all the o2 sensors? Would sensors on both sides gby keithl - Main Forum