'91 4.3 "Z"
Thread Starter
Joined: Apr 2007
Posts: 3
From:
'91 4.3 "Z"
After replacing distributor cap, rotor, plugs, wires and PCV (I’ve done this regularly since I purchased the car new with no adverse results) – it now idles rough at operating temp stopped red light. Smog failed HC (130 with 124 being the upper limit). I checked all vacuum hoses, triple checked plug wire routing, checked new wire resistances, and finally reinstalled the original wires – NFG. Took it to shop -no error codes, they recommended replacing the EGR valve. I did this as well with the no change. Is there anyone who has been here before?
