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A/C; Intermittent problem S70 1998

posted by  frebab on  Sun May 6 13:58 CST 2007
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last visit: Thu Mar 13 07:52 CST 2014
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A/C malfunctions intermittently. Works fine...pleanty cold, 'till engine exceeds about 3,000 RPM. Then, No A/C. Must turn off A/C for about5...10...15 minutes; turn back on and it works again. It seems that the hotter the ambient temp, the quicker it malfunctions...i.e. at lower RPM, and longer you must wait for it to function again.

Dealer said hard code identified a problem as Accelerameter sensor: part # 6842539 at cost of $436.75 less 20%.

Is this the problem or can it be something else?

A few years ago the pressure switch was replaced which solved a problem of the evaporator frosting.

Thanks for your help in advance.








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A/C; Intermittent problem S70 1998

posted by  frebab on  Tue May 15 07:37 CST 2007
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last visit: Thu Mar 13 07:52 CST 2014
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Accelerometer and linear pressure sensors were OK. Problem is clutch drops out at high RPM, high heat, or both. But thanks for your help.








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A/C; Intermittent problem S70 1998

posted by  MISUNDERSTOOD on  Tue May 8 18:23 CST 2007
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last visit: Sun Oct 14 14:22 CST 2007
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it is still a problem with the linear pressure sensor. replace the sensor and disconnect the battery for 10 minutes. reconnect and recheck codes.







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