Why is my 1990 GMC 5.0 motor backfiring it's a throttlebody

Asked by migration_GaryColema... Aug 26, 2014 at 08:57 AM about the 1990 GMC Sierra 1500

Question type: Maintenance & Repair

It runs fine for a while and then when
we're out on the highway it starts
cutting out and acting like it's going
to die or get no gas and it backfires

3 Answers
143,745

T_S_T answered 9 years ago

Could be fuel pump going bad,or may all so be igintion control module going bad.

Mark helpful

Regina answered 8 years ago

I'm pretty sure it is the fuel line filter right under the driver side door. Please let me know if you try this and if that was a fix or not. Thank you.

Mark helpful

Your Answer:

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