I have a1985 Volvo wagon 240 and it failed the nox the MAX :788 AVE:473 MEAS:1507 this was at 15 mph. I don't understand it. Could you please help me. Thank you S
50

Asked by suzzieQ Aug 06, 2015 at 02:16 PM about the 1985 Volvo 240 DL Wagon

Question type: Maintenance & Repair

5 Answers
188,395

Paul answered 8 years ago

You could have a bad catalytic converter, you could also being burning lean..

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188,395

Paul answered 8 years ago

Not enough fuel, could be clogged fuel filter, or fuel pressure needs to be adjusted, or the fuel pump is lagging or going bad could causing a lean condition.

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