Hello just rebuilding the whole fuel injector / cam sensor/ temp sensor wiring harness on a 3.5 lz4 engine in a 08 pontiac G6 . Im looking for a wiring Schematic so I can check my work

SOURCE: cold start valve problem

if you have an electric cold start valve make sure to unplug it and if keeps apling fuel with electrical conector unpluged that means the valve is not good, but if not then you have an electronic problem, possible a bad cold start sensor or cold start module or cicuit problem, and might be a time to take it to an electrical shop

Ernest Stalker

• 53 Answers
• Posted on Jan 10, 2009

SOURCE: 2004 Jeep G Cherokee diagnostic code open injector

It could be a faulty pcm or wiring as you stated in you post. the pcm pulses a ground to the injector circuit allowing the solenoid in the injector to activate momentarily are inject fuel into the intake. if you give me the engine size. V8 4.7L or strait 6 cylinder 4.0L and i will post the proper wiring diagram for the fuel injectors to help you out with your battle

SOURCE: 95 Jeep Grand Cherokee 5.2 Check engine came on

You need to begin tracing harness wire that has no power, back to the computer. If you can locate the wire at the computer, first check it there. If no signal from the computer at the pin, then change computer.

SOURCE: I have a 2003 ford

Check for Intake Manifold leaks with either a water mist from a spray bottle or Choke cleaner. Do this while the engine is running and you will know about a leak with an RPM change. I read about some intakes were 2 piece and the intermediate gasket leaks.

Also you could clean the MAF on the air intake with Electric cleaner. If you have an old fashion Vacuum gauge you could plug in and see how steady Valves are closing by watching the Vacuum bounce from misfires.

Would like to know results on this case.

SOURCE: This 1999 dodge 1500 5.9l will start and run fine

Hello.. looks like you are getting good fuel delivery. Is the fuel curve mixture on the scanner in specs? How is the timing, the timing chains on these engines will stretch and throw the timing off causing a ping and missfire -- a weak valve spring is something to consider. Also, the PCM may be faulty. I hope this helps.