Having problems with your 1992 Chevrolet Suburban ?
1992 suburban not passin emission testing
\015 Hi i have a 1992 suburban and i had the emission testing done and it failed. they said all the tests passed except for the curb idle. can you please tell me what it could be and what i can do to make it pass the test?\015
Could be the ECM that controls the fuel supply and mixture to the throttle body .
Repair Help & Product Troubleshooting for 1992 Chevrolet Suburban
Tips for a great answer:- Provide details, support with references or personal experience .
- If you need clarification, ask it in the comment box .
- It's 100% free, no registration required.