'91 just failed emmissions
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Joined: Oct 2012
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From: atlanta, ga
'91 just failed emmissions
I dont drive my 91 convertible much (I know) but it runs great and I keep it in my garage so it still looks pretty good. It just failed the HC emissions test, any suggestions on things I can do? I am not far off, so it shouldn't take much. thanks
Joined: Feb 2001
Posts: 29,798
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From: London, Ontario, Canada
First start with a full tuneup including TPS adjustment.
If the HC numbers don't decrease, then you may need a new cat. Make sure the car is fully warmed up before they perform the test.
If the HC numbers don't decrease, then you may need a new cat. Make sure the car is fully warmed up before they perform the test.
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