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Old 09-16-2006, 22:15   #1 (permalink)
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OBD1 - 147 and 327 codes

(1993 sable 3.8)
mil light went on, some rough idle and then everything is ok and now the light is off - I pulled the codes anyway, since I do have an ongoing problem that's different than this. The codes I got are:
157 MAF sensor circuit open.
327 PFE sensor circuit voltage below Self-Test minimum.

The other problem that I have had for a long time is that when I go down a long hill on the highway, the mil goes on, but once I start accelerating again on flat ground it goes right off. I don't know if these codes are related.

Any help appreciated!

Thanks,
Rob
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Old 09-17-2006, 07:42   #2 (permalink)
NESHO SCT Tuner
 
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Re: OBD1 - 147 and 327 codes

I would check the sensor supply voltage. It should be 5v and comes from the PCM. Easiest place to check is the throttle poistion sensor with the key in run and engine off.
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Old 09-21-2006, 16:06   #3 (permalink)
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Re: OBD1 - 147 and 327 codes

Thanks for the advice - I will check...
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