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Thread: Hesitation again...
02-10-2005 12:36 PM #1
Any thoughts on the following would be appreciated:
M5 sometimes runs great and at other times hesitates around 3500 rpm. Replaced: in tank pump, fuel/air filter, wires, plugs, adjusted valves, 02, and fiddled with the AFM by moving the pointer "down" the shaft slightly.
Symptoms occur when at speed (60+) when near full throttle is applied. It will either accelerate great and through the range, or hesitate and throw a puff of unburned gas out the tail pipe (I can see this in the rear view mirror under the right light conditions).
It might be pinging, but I am not 100% sure.
Without any research, I am thinking that perhaps the AFM is still not sending a clear signal and drops out causing the computer to cycle? Any thoughts... This is my daily driver and it is painful to baby it...
Dean M5 '88 ///M5
'60 Healey BN7
'72 Kabota :)
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