1986 GMC C1500 "egr system incomplete" Questions

...EGR O2 (oxygen) leak in the exhaust Oh yea evap emissions where the fuel vapors escape into the atmosphere through a .020" hole in the fuel vapor recovery system somwhere between the fuel ank and the ...

...egr Inc first time this happens. I order the o2 sensor hoping that solves the problems anything else recommended? when you change a component in emissions it changes and clears the ready back to inc ...

...incomplete combustion white smoke --too lean , water getting into the combustion chamber ( gasket) blue smoke-- valve stem seal incorrectly fitted( old or worn,hard),oil ring failure, cylinder bore ...

...Egr valve reads incomplete. I have driven over 250 since I cleared a mass air flow code. It is just used for commuting back and forth to work and has 185,000 miles on it but I wanted to get another ...

...EGR system. If it's been scanned for trouble codes lately, then possibly that may have come up, but if not, I'd have it scanned just for sure. Your local autoparts supplier should be able to tell you ...

...disconnected a spark plug wire by accident and ran it on 2 cylinders. Still no SES light. Is my huntch correct? faulty PCM? have your EGR system checked . sounds to me like its not working or ...

...system to run each of the separate mode tests. EGR : Start engine and warm up completely. Make sure all electrical loads are off (A/C headlights, blower fan, and rear window defroster) Accelerate to ...

...EGR system is working, if not, the EGR valve may have failed. Tailpipe emissions are released as bi-products of spent fuel that is combusted inside the cylinders of the engine. These omitted gases ...

EGR system, (but this will typically set a separate code). A leak in the exhaust system before the O2 sensor will also cause incorrect readings. And always check for after- market modifications. These

...EGR System - The Exhaust Gas Recirculation system is designed to reduce NO. The EGR system consists of an EGR valve, EGR pressure sensor, vacuum hoses, and one or more vacuum switching valves or ...