Re: Help! My '86 Volvo won't pass smog test!
spinbag48 <[email protected]> Tue, 02 Jan 2024 02:00:04 +0000
| Newsgroups | alt.autos.volvo |
|---|---|
| Organization | NewsgroupDirect |
| Message-ID | <[email protected]> |
I've smog tested thousands of cars since 1972 all in CA. Looking at all your readings the car is in great shape tune up wise. There's only two things that will cause that high a NOX reading is the catalytic converter or the EGR valve not working. If your NOX reading was closer to normal I'd say cleaning the throttle body or driving it 50 miles might help but 2005 ppm... -- For full context, visit https://www.motorsforum.com/volvo/help-my-86-volvo-won-t-pass-smog-test-45715-.htm