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Old 09-01-2011, 05:16 PM   #1
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Crankshaft or Camshaft sensor? 97 stalling

Common problem I know. But which one?? Driving to work this morning it stumbled twice running 60 mph. Didn't think much. Pulled up to a stop sign, drove off and when the trans hit 2nd it just died. Tach went to 0 but the oil pressure gauge worked until I put the trans in neutral. So I know gauges still worked. So tach signal went to 0. Tried to crank, cranked fine but no fire. Sat for 1 minute, cranked it up and it fired right up. Drove the last 3 miles to work no problem. No check engine light on. Purged codes, 12,11, 55. Got out of work, started fine and drove about 10 miles. Doing 60 mph it just died again. Pulled over. Tried cranking, no start. Purged codes again, 12, 54, 11, 55. Check engine light is now on solid. So now camshaft code shows up. Sat for 1 minute again, turned over and ran pretty good but not 100%. Drove it 5 miles home without dieing again. It sits in the driveway. So, did I loose the crank or cam sensor? Thanks for your input.

Will

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Old 09-01-2011, 05:29 PM   #2
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Your symptoms emulate mine when my CPS connection gets loose, which it does a lot.

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Old 09-01-2011, 05:44 PM   #3
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Crank position sensor gets loose?? Connection not that great? Will have to take a look. I hear it is in a "nice" place. Thanks.
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Old 09-01-2011, 09:24 PM   #4
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Well, I ran the Jeep in the driveway and messed around with the wires and never got it to stumble. I guess I will just stick in a new crank and cam sensor. Peace of mind.
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Old 09-02-2011, 05:51 AM   #5
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I replaced mine old one due to a code toss, and ever since then, I get intermittent (and wholly unexpected) jumps or stalls. Scares the sh*t out of my wife when it happens on the trail, but opening the hood, unplugging then plugging in the connector solves the problem till another day. Wouldn't hurt to replace yours. Easy to do and takes about 15 minutes. The plug sits between the firewall and the back of the fuel rails on mine. Might also try contact cleaner and dielectric grease first. I did that and it helped for several months.
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Old 09-02-2011, 03:09 PM   #6
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Well, I put in a new CPS. I fired RIGHT up and ran very well. The last month it has been cranking longer and I was thinking it was the fuel pump anti drain back. Will see how it goes when I take it for a longer trip.

Will

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