misfire on my 1998 GMC pu. 1500 , 5.0

Asked by Mar 25, 2015 at 08:11 AM about the 1998 GMC Sierra 1500 C1500 SLE Extended Cab LB

Question type: Maintenance & Repair

my truck just all the sudden started running ruff , the code reads random misfire .
as I am driving the service engine light flashes .  was running fine before

4 Answers

110

Check your spark plug gap. And regap accordingly.

8,745

Sounds more like an ignition module or coil issue

1 people found this helpful.
15

it wouldn"tstart it running ruff and wants to shut off

1 people found this helpful.
8,745

Oh yes it could

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