Subject	Help with miss/hesitation/misfire
Posted by	Summeronthechain (MN) on July 29, 2012 at 3:14 PM
	This message has been viewed 277 times.
Message	Hey TT.net, I need some help. My car has a slight miss. It is barely noticeable at idle and remains all through the rev range when the engine is cold and warm. The results of this are lack of power, lower throttle response, and a small vibration felt through the shifter. I recently did some service to my car including timing belt, new EFI harness, and plenum pull. Car ran perfect prior. Some troubleshooting I already did: -Code 55 on ecu(no malfunctions) -Double checked spark plugs, all look good. -All coil packs ohmed out good -Check EFI connections, all good with the exception of bypassed systems(PRVR, AIV, EGR, stock boost control solenoids). -Double checked for boost leaks - Holds pressure well. -Removed coil pack connectors with car running and car drops in revs and chugs when I remove each one. -Removed and reinstalled timing belt, double checking my timing marks -Switched out CAS/TPS -Cleaned MAF/connections
Follow Ups	Help with miss/hesitation/misfire - Summeronthechain (MN) 15:14:44 07/29/12 How's your ptu? (n/m) - JonnyZ(SoCal) 16:31:58 07/29/12 Double checked with a known good one, car ran the same. (n/m) - Summeronthechain (MN) 23:08:12 07/29/12 MAF voltage? (n/m) - ZiNnYc 17:27:53 07/29/12 Double checked with a known good one, car ran the same. (n/m) - Summeronthechain (MN) 23:08:56 07/29/12 UPDATE: - Summeronthechain (MN) 09:25:54 07/30/12 Do you have access to datascan or conzult - ZiNnYc 11:59:57 07/30/12 Check fuel pressure (n/m) - WhiTTe Z 12:27:41 07/30/12 Results below: - Summeronthechain (MN) 17:30:39 07/30/12
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