My HC PPM is reading too high and My NOx PPM is also reading to high. I took my car to a mechanic and he said I need to get a whole new engine. A fuel injection cleaner did nothing. The car runs prefect. I don't have anything leaking. Any suggestions?
change o2 sensor. if the car is fuel injected clean the injectors. if it's carbureted make sure it's ok. it it has a smog pump make sure your smog pump filter is clean. change your charcoal canister filter. and make sure your not running too rich or lean.
This is an older thread, you may not receive a response, and could be reviving an old thread. Please consider creating a new thread.
Related Threads
?
?
?
?
?
Impala Forums
784.4K posts
61.5K members
Since 2007
A forum community dedicated to Chevy Impala owners and enthusiasts. Come join the discussion about performance, SS models, modifications, classifieds, troubleshooting, maintenance, and more!