I have been having a problem with my car where the car sputters and jerks and it seems to be like a wiring harness grounding out (that's my best guess anyway). Has anybody had this type of problem with a bad wiring harness and if so where in the wiring harness did you find the problem? ANY help would be great- Thanks!

 

Be more specific. What RPM? What boost? Any smoke? How's the idle? Check your MAP sensor, check/clean your engine grounds, spark & fuel delivery good? That's the best I can do w/o some more information.
~Tom

 

it starts at about 2500 ta 4000 diff each time some times the boost will be at 5 some times at 2lb.idle is fine i have a 2nd ground hooked up.the o2volts seem to go to 0 when this happens. oil pres seems to go like 30 ta 120 or 60 ta 120 just really wierd. it.s like all powetr is being shut down like light switchoff and on.

 

Weird, but it actually sounds like an ECU problem. Try swapping it out with someone else, if you can.
~Tom

 

you dont think its' the map sen.