having troubles with my 91 park avenue spark reference circuit codes - GM Forum - Buick, Cadillac, Chev, Olds, GMC & Pontiac chat


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Old 06-22-2010, 02:36 PM   #1
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Question having troubles with my 91 park avenue spark reference circuit codes

I just replaced the ecm,coil pack, plugs,and wires on my 91 Park Avenue. Every thing was fine untill 5 days later it just would'nt start again. So I replaced the cam shaft sensor as well as the crank shaft sensor, without using the alignment tool. Now the car runs rough and lean, and also loses all power when hitting operating temp. HELP ME PLEASE!!
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Old 06-22-2010, 02:41 PM   #2
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Have you checked your fuel pressure? Do you have any engine codes? Running lean would have me looking for a big vacuum leak.
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Old 06-22-2010, 02:50 PM   #3
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Bump!!
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Old 06-22-2010, 02:54 PM   #4
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Have you checked your fuel pressure? Do you have any engine codes? Running lean would have me looking for a big vacuum leak.
Sorry not lean anymore, but timing seems off and still loses all power when hitting operating temp. I still think my crank shaft sensor is out of alignment. Everything I've read through and people talked to say it'* the crankshaft sensor. I didn't use an alignment tool, not enough money to take car in to a shop.
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Old 06-22-2010, 03:00 PM   #5
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Fuel pressure is fine, and as far as I know don't have any vaccum leaks. And code says 17 still, which is the spark reference circuit.
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Old 06-22-2010, 03:02 PM   #6
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Moved to Buick

If the crank sensor was bad I would expect the engine to die out from time to time. Check the engine coolant temp sensor.
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Old 06-22-2010, 03:03 PM   #7
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Fuel pressure is fine, and as far as i know don't have any vaccum leaks. And code says 17 still, which is the spark reference circuit

Inspect the ignition wiring harness for any shorts or damage.
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Old 06-22-2010, 03:16 PM   #8
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Inspect the ignition wiring harness for any shorts or damage.
Will do. I thought maybe the coolant temp sensor. I do believe it'* on the throttle body under the intake hose?
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Old 07-08-2010, 06:33 PM   #9
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Hi Danthurs,

I would take another look at the crank sensor alignment. This setting is crucial and can cause some of the symptoms you have described.

Good Luck! Pete
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Old 07-08-2010, 06:36 PM   #10
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Whoops ... my previous reply was to badnija'* question!
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