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1988 Volvo in need of help 200 1988

posted by  someone claiming to be TomD on  Sat Feb 15 11:30 CST 2003 [RELATED]

Ted,

Good advice from Jay and Haroon. I would do the tuneup: plugs, wires, cap and rotor, air filter, Techron as suggested. Check for any vacuum leaks, especially the vacuum line that attaches to the fuel pressure regulator as that can develop a split and let un-metered air in.

After the tuneup, try the emission test again. You might luck out and pass. You certainly should show much improved numbers. If not, try the next few things, below:

Do you have any records with the car? If not, you might want to bring it up to a certain "known good" state by replacing inexpensive items that are likely to be problematic: fuel pump relay, fuel pressure regulator and O2 sensor.

I would put in a new O2 sensor as it seems you are running quite rich on the mixture.

Haroon mentioned some good internet suppliers for parts, but you are nearly out of time for Wednesday... A new catalytic converter will probably take you to success but don't let them rip you off on price. Shop around and check the brickboard archives about cats as there have been some recent success stories with passing emissions replacing the cats.

Report back your results if at all possible, as that's how we all can learn more together! Good Luck!!

Regards,

TomD
'86 240
'93 240






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