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I couldn't find any useful info on here about this problem, but a web search led me to another forum where several people were having the same problem. Many suggestions were offered and tried, with minimal success. The most plausible explanations were a bad ECU (worked for at least one person, didn't work for another), and either the fan control relays or the fans themselves. The codes are directly correlated to the A/C conking out, but it's unclear which is the cause and which is the effect.
If I replace the ECM with one from the exact model/year, will it at least run so I can see if the same code comes back? I know it's supposed to be "married" to the car with a Tech 2. Where exactly is the ECU located on this car? I'd like to try to insulate it from the engine compartment temporarily, since the problem also seems temperature dependent.
'06 9-3 2.0T Auto
->Posting last edited on Wed, 13 Jun 2018 05:48:20.
Posts in this Thread:
- P0686, P0687, intermittent A/C, TML , Wed, 13 Jun 2018 05:47:54 <-- Viewing This Message
- Re: P0686, P0687, intermittent A/C, SWEDECAR , Wed, 13 Jun 2018 09:40:05
- Re: P0686, P0687, intermittent A/C, TML , Thu, 14 Jun 2018 04:10:41
- Re: P0686, P0687, intermittent A/C, SWEDECAR , Thu, 14 Jun 2018 10:06:40
- Re: P0686, P0687, intermittent A/C, TML , Thu, 14 Jun 2018 13:40:12
- Re: P0686, P0687, intermittent A/C, SWEDECAR , Thu, 14 Jun 2018 14:25:34
- Re: P0686, P0687, intermittent A/C, TML , Wed, 27 Jun 2018 07:17:03
- Re: P0686, P0687, intermittent A/C, SWEDECAR , Wed, 27 Jun 2018 10:25:01
- Re: P0686, P0687, intermittent A/C, Stefan, Sun, 1 Jul 2018 02:02:43
- Re: P0686, P0687, intermittent A/C, TML , Sat, 30 Jun 2018 17:41:53
- Re: P0686, P0687, intermittent A/C, Bernie , Fri, 15 Jun 2018 20:14:03
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