1998 Chevrolet Truck Repair Question
Mileage: No information provided.
Chevy 4x4 multiple misfires
Under light load miss with mulitple cylinder misfires
check engine light does not come on, with scanner hooked up, shows 2 or 3 cylinders misfiring
fuel pressure check- ok, injector balance check-ok, EGR - ok
Any Ideas?
Asked by tlambert@atlanticbb.netAnswer
Ant aftermarket electronics installed recently? Alarm? or ever an oiled air filter system? If not Check your coil(s)
if you can, find a scan tool and see what the fuel trim is reading when the misfire is happening. Sounds like you may have a upper intake leaking vacuum, or a possible O2 sensor shorting out.
Yes, I know for sure that the Radio & Boom Box are after market. I will check this morning for anything else that might be. Thanks again, upfront, for any ideas. I'm banging my head against the wall with this one!
Yes, I know for sure that the Radio & Boom Box are after market. The alarm system is, as well. I will check this morning for anything else that might be. Thanks again, upfront, for any ideas. I'm banging my head against the wall with this one![/quote:e1e2488890]