Having problems with your 2003 GMC Envoy Xl ?

2003 envoy smells like fumes and idles rough

\015 My 2003 Envoy XL is idling rough. Once I start going everything is smooth. The check engine light is on, I took to auto zone and it said multiple misfires. In the last two days I have fixed a exhaust leak that was caused by a manifold bolt missing, all new plugs and wires, new air flow sensor, new MAP sensor, cleaned the throttle body, and replaced the throttle body pedal sensor. I am out of ideas on what would be going on. You can smell fumes when reving the engine, and the rocks by the tailpipe are black.\015 Posted / edited by AnonymousUser on : 18-03-2019

Answers :

Have you checked for a vacuum leak?pcv attached,no leaks around plenum,engine coolant temp sensor reading right.
Repair Help & Product Troubleshooting for 2003 GMC Envoy Xl

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