92 Chevy S10

Asked by RamRod76 Jul 26, 2017 at 01:25 AM about the 1992 Chevrolet S-10 RWD

Question type: Maintenance & Repair

1992 Chevy S10 4.3L.  Truck starts fine and idles ok.  While driving it down the highway it wants
to spit and sputter so to speak only when I back off of the gas pedal a bit. Obviously this is OBD
1 and I didn't have a scan tool so I jumped the connection on the plug and counted flashes. I was
getting codes 13, 33 and 44. I changed the MAP sensor already and fixing to change the O2
sensor tomorrow. Would a bad O2 sensor cause this?

3 Answers

RamRod76 answered 6 years ago

Little history here.......about 6 months ago I lost the muffler it and never replaced it. Yes it was loud and obnoxious but not too terrible so I left it. Ok.....now about a month ago I was driving to work (12 mile commute) and passed big rig. Got up to around 85 (late for work). I noticed as I was pulling off highway I didn't have power steering. Come to find out my belt tensioner pulley went bad. Lost the pulley completely. Belt wasn't turning. Got a ride home. Next day changed tensioner and belt. Ever since then I've had this problem of it running like this. By the way I also fixed the exhaust. I put a glass pack on it. Lot quieter now. Do you think the rough running is due from bad O2 sensor or maybe catalytic converter issue?

Mark helpful
230

Sean answered 6 years ago

Could be what you're talking about or not. If you lost your tensioner pulley, make sure that no wires/connections or vacuum hoses were disturbed /damaged.

Mark helpful

Your Answer:

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