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Little help here? Can't figure it out! 200

posted by  Volvodad on  Tue Jul 12 07:54 CST 2005
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last visit: Thu Oct 23 16:18 CST 2014
[RELATED]

I'm guessing your engine setup is not too different from my '94-940 (LH-2.4)

I got the check engine light, a drop in fuel economy, and codes indicated fuel trim, missing or bad signal from O2 sensor, and missing signal from TPS. After I disassembled, cleaned and readjusted, and tested the TPS I got the same codes again, along with the light, so gave up and took it (and the proceeds from a second mortgage) to the dealer. I smugly showed the list of codes to the service rep...(message: "here's a guy who knows a thing or two...").

A day later they gave it back with a new EGR solenoid - the little ECU-operated electric valve that directs vacuum to the EGR Valve. No other action taken. And...no check engine light, smooth running, good fuel economy...4 months now. This fix seems to have had nothing to do with any of the codes! But worked perfectly. I'm humbled.

Point being - the codes from the OBD-1 system can be helpful, but are not guaranteed accurate.
--
Bob (son's 81-244GL B21F, dtr's 83-244DL B23F, 'my' 94-944 B230FD; plus grocery-getter Dodge minivan, hobbycar 77 MGB, and a few old motorcycles)






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