i did a tune up on my jimmy. put new plugs wires and cap truck is running rough.


Asked by Sep 08, 2012 at 05:30 PM about the 1994 GMC Jimmy 4 Dr SLT 4WD SUV

Question type: Maintenance & Repair

it ran better before the tune up. any ideas whatts causeing the rough idel

8 Answers

John Saffrahn

Check the wires its easy to accidentally cross them

Best Answer

ok thanks ill try it.

1 out of 1 people think this is helpful.

john any chance can send the wiring diagram?

John Saffrahn

I'm assuming its a 4.3L The numbers represent the cylinders on each side Passengers side. Driver side 6 5 4. 3 2. 1 Front The distributor being looked at from the front going in a clockwise rotation is numbered 165432 4 5 3 6 2 1


sorry to bother you john. heres my e-mail add. baileywilliam87@yahoo.com. thanks again.

John Saffrahn

So glad hitting enter didn't paragraph the stuff give me about 20 mins gotta find thebook with the pic

Andrew Olsen

the 4.3's can be picky with plugs. Best with ACDelco. Did you gap the plugs?

1 out of 1 people think this is helpful.
Ben Gibson

Also try resetting the ecm by either pulling the ECM fuse or disconnecting the battery for 15 mins . Then once hooked back up the ECM will re-adjust the timing etc. according to the new parts performance.

1 out of 1 people think this is helpful.

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