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AFM Temp Sensor resistances.... (archive)
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Posted by Paul Shovestul on November 06, 2001 at 06:24:00:

In Reply to: Re: Unfortunately a bad AFM temp sensor .... posted by Todd Kenyon on November 05, 2001 at 19:43:41:

I don't have them for an M5, but from the factory E12 manual: 8.25k - 10.56kohm @ 14F; 2.28 - 2.72kohm @68F; .75k - .91kohm @ 122F. Bentley's E34 manual shows resistances for "coolant and intake air temp sensor" : 7k - 11.6kohm @ 14F; 2.1k - 2.9kohm @ 68F; .2k -.4kohm @ 176F. Bentley's E34 manual isn't clear which engine these resistances are for, but they are reamrkable close those for the E12. M30 E12 AFM's are virtually identical to M30 E28 AFM's, although E12 AFM's have a microswitch to control the fuel pump. I'm convinced the only substantial difference is the spring setting. I must have missed your concern about warm running performance. If the mixture is a little lean when warm, that is likely to aggravate a cold start driveability problem. Ever had your injectors cleaned and flow tested?

Paul Shovestul

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