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Pulled codes: Ideas on where to start? 900 1994

posted by  brownboy on  Fri Feb 13 10:04 CST 2004
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last visit: Fri Jan 1 14:31 CST 2010
[RELATED]

Hi All:
Just bought a 1994 940 NA, and now I'm working on it. Pulled the codes and they were: Socket 2: 1-2-1 and 1-2-3, and socket 6: 2-2-4. The 1-2-3 and 2-2-4 codes are engine coolant temp sensor codes, and 1-2-1 is is faulty signal to/from air mass meter. I can't tell obvious starting or performance problems with the car, and haven't had it long enough to tell if gas consumption is affected yet.

So, is it likely that the wiring to the ect is bad or should I figure that it is the ect itself? Where do I start to diagnose the AMM code?

Thanks for your help.

Mike Brown
Greenville, NC
1996 965 105K
1994 940 135K
1986 244 137K

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Mike Brown Greenville, NC 1996 965 94K 1986 244 137K






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