Quote:
Originally Posted by Tripler
Pulled #8 and #5 at the same time and it idles ruff and sounds the same .
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To double check, start and run the engine with 5 and 8 disconnected. Connect 5 and note any changes in idle. Connect 8 and note any changes in idle.
If connecting 5 and 8 didn't have any affect, it's pointing to an ignition problem. Perhaps a coil or the Ignition Module (DIS).
Sounds like you'll need to pull the plenum to test and repair further.
With the plenum off you can test the ECM (-) outputs to the injectors. A couple of noid ("solonoid") lights will come in handy for this. A basic 12v test light will be needed to simulate a Crank Hi signal to spoof the Ignition Module and ECM.
Let us know when you have the plenum off.