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We have a 1995 9000 with an automatic transmission that tends not to start after it's been running for awhile; as in starts fine to drive home, stop for petrol, and often it won't start again. No cranking, no clicking, no sound. Wait 15 to 30 minutes and it starts up fine. Tends to be worse in hot weather. I've looking into the Neutral Safety Switch, cleaned it, replaced it with a new one, it was ok for a few months. Over on the NG900/9-3 pages, there is a 'How to by-pass the Neutral Safety Switch' by adding a momentary switch to starter relay (K) in the fuse/relay panel. Is this or something similar doable on the 9000? Suggestions?
 

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That is a classic CPS failure symptom for 9-5's... dont know though if 9000's have this issue as well. (havent had my 9000 long enough to know this about them, but very common for 9-5s) I do know that a failing/bad/failed CPS will cut power to the fuel pump...(thus many folks start questioning the fuel pump or fuel pump relay) again not sure how this set up works in the 9000...
 

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I'm wondering, now, if that's the cause of the intermittent startup ignition timing issues on my 9000. The CPS was replaced by a dealer already but it's been a while. It would also affect idle more prominently if the sensor is not picking up the gap regularly. Under rev it would even out. Hmm..
 
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