Can't figure this out. 98 k1500

[Jrgarrett91]

Have a 98 k1500 with the 5.7, has random misfire that causes the whole truck to violently shake. Have checked the u joints, driveshaft, and rear to eliminate those. Has new plugs wires cap rotor intake and spider injection system. Any suggestions would be awesome as I'm at a complete loss at this point.

 

[GMstrong]

make sure the wires are not crossed.

 

[Horns]

What do you mean by random? Like it only happens every now and then? Or is it a repeatable misfire that happens ever rotation?

 

[heavychevy98]

sounds like O2 sensor if its kinda random misses. IMO.

 

[TruckinAin4Sissies]

My situation:

I had death-wobble before and cured that by replacing ALL steering components (Pittman/Idler arms mainly).

Random misfire (P0345) was from replacing my distributor and the base timing was outta whack, fixed that via my laptop running ScanXL.



-Truckin-