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I've been sorting through a host of issues associated with a used 05 V8. So far I've done everything from timing belt to new transmission valve body. I think I'm finally getting the major stuff out of the way, but I'm still struggling with a hesitation and idle issue...
When I first start the car (05 V8 with about 111,000 miles, air suspension), it idles rough. Once it's warmed up, it seems to settle down a bit, though you can still feel the tremor at lights and when stopped. When you accelerate, there is a distinct hesitation. If you mash the pedal, it goes like hell. If you push on it easy, it all but dies until you give it enough to go. I recently cleared up some vacuum problems, and the VCDS now shows no engine faults. So my question is, are these symptoms of needing a tune-up (plugs, coils, etc)? Could it be a programming reset issue, where I need to re-program the throttle body (I've already don't he throttle reset with key on, push pedal, etc)? Or am I way off target and it could be something altogether different?
Any suggestions?
Thanks
When I first start the car (05 V8 with about 111,000 miles, air suspension), it idles rough. Once it's warmed up, it seems to settle down a bit, though you can still feel the tremor at lights and when stopped. When you accelerate, there is a distinct hesitation. If you mash the pedal, it goes like hell. If you push on it easy, it all but dies until you give it enough to go. I recently cleared up some vacuum problems, and the VCDS now shows no engine faults. So my question is, are these symptoms of needing a tune-up (plugs, coils, etc)? Could it be a programming reset issue, where I need to re-program the throttle body (I've already don't he throttle reset with key on, push pedal, etc)? Or am I way off target and it could be something altogether different?
Any suggestions?
Thanks