1994 Chevrolet Silverado Repair Question
Asked on January 13, 2013
Chevrolet Silverado Exhaust Problem
350TBI engine.
The truck's idle is a little rough but not bad. driving the truck at 45mph or slower is not a problem as long as we are easy on the pedal. If we try to give it gas as to pull into traffic or drive any faster that 45ish, it sputters and bucks and seems to be missing severely. It has no power really. We have already changed the ECT sensor and tried a few different MAP sensors with no luck. We test the TPS with a multimeter and it appears to be functioning properly and now we are at a loss. Gas mileage is bad, no power and its occasionally smoking black.
The truck's idle is a little rough but not bad. driving the truck at 45mph or slower is not a problem as long as we are easy on the pedal. If we try to give it gas as to pull into traffic or drive any faster that 45ish, it sputters and bucks and seems to be missing severely. It has no power really. We have already changed the ECT sensor and tried a few different MAP sensors with no luck. We test the TPS with a multimeter and it appears to be functioning properly and now we are at a loss. Gas mileage is bad, no power and its occasionally smoking black.
Asked by tristanboydAnswer
Replied on January 13, 2013
i bet you have a bad cat converter.
have the back pressure checked.
Roy
Replied on January 13, 2013
Forgot to mention, there is no cat on this truck.
Replied on January 14, 2013
ok, still look for exhaust restriction in the system
Roy
Replied on January 17, 2013
We couldn't find any restricitions in the exhaust. Free flowing and loud like always. Gotta love a catless system with flowmasters. Anywho, what would you suggest us trying next?
Replied on January 17, 2013
lets start with basics.... compression, fuel pressure and spark.
verify all 3 are good and we go from there
Roy