TwinTurbo.NET: Nissan 300ZX forum - I'd start with the PTU and that sub-harness mess
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Subject I'd start with the PTU and that sub-harness mess
     
Posted by jzack on August 02, 2008 at 8:43 AM
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In Reply To Sporadic Power Loss after new EFI Harness Install posted by sp300z on August 01, 2008 at 08:55 PM
     
Message that came with the PTU recall upgrade. There are many connection points in that whole tangled mess. It would also be worth the time to get some new coil pack (harness) connector shells and replace the old ones. Pretty easy to do and the new connectors will fit firmly on the packs.

Would also be a good idea to inspect the CAS connector for looseness or corrosion.

Some people have problems with the aftermarket air intake systems -- gets a little turblence in front of the element and causes the MAF to get confused. This can cause some stumbling as well - do a search on flower pot, MAF, intake, etc. (Flower pot lid is done as a mod)

Just for grins -- did the ECU throw any error codes?

Good luck - not that easy to figure out problems that don't happen all the time...

     
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