1997 Buick Century Q&A
1997 Buick Century Question: My Service Engine Soon will come on.
When I check the system with a scanner at my local mechanic the code that appears is PO420. This car has a 3.1 v6 with automatic transmission. If anyone has encountered the same problem please e-mail any suggestions to correct the problem. Thank you and may you have a Blessed Day. - lenova
P0420-catalyst below efficiency , have system (rear O2 sensor) monitored with scanner(NOT CODE READER!!!!!) to verify converter function. Clear code and see if it returns. - ziptie12
I was having a problem with the Service Engine Soon Light coming on and when the code was read it said there was a misfire on cylinder 1. I had all my plugs ad plug wires replaced but the code per...
I just passed 74000 miles and the service engine light has come on. The car is running good, any idea why the light has come on? Thank you, Jackie
service engine soon light comes on (gas cap is tight), after 70 mph. Today, car started skipping..maybe firing on 5 cyls.Can I drive it (3 miles) to my servicing garage safely?
I had my car in the shop about 7 weeks ago because my car, upon driving after braking, would make a high screeching sound and be hard to steer forward. No matter where I was, the only way to move ...