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Car Forum / Pontiac / Pontiac Cars / February 2006

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'92 Bonneville, 230,000 mi., looks good;runs bad....can you help me :)

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SamIam - 08 Feb 2006 00:35 GMT
I've got a '92 Bonneville with 230,000 mi. on it but still looks and runs (ran) pretty good. The problem I'm having is that the car was dying after running about 30 minutes. It didn't set a code and would restart after it cooled off completely, then run for another 30 minutes. Sinse it didn't set a code I figured it was either the ignition module or the crank sensor. Seeing that the ignition module was much easier to replace, I took that route. After I changed it out I restarted the car and it ran fine for about 5 seconds. I checked for codes again and retrieved a code "58"- VATS- fuel pump disable. Could it have anything to do with the changing of the module or did another problem magically appear at the same time? I cleaned the contacts on both the key and the ign. switch but to no avail. I've got the front seat out (I'm 6'5") so I could get under the dash but am hesitant to cut the wires for the VAts to check for resistance (if I find a bad contact or wire in the ignition switch I thought I might splice in a resistor) with the key in the on position until I can get some suggestions from someone with more knowlede than I have about it. I know just about enough to get myself in more trouble :) . Don't know if the module fixed the first problem because the engine won't run long enough. Can someone please give me some help with this as I can't afford to take it to the dealer and need the car pretty bad. Thanks alot for any help I can get......Mik

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SamIam
Steve K - 11 Feb 2006 18:53 GMT
The code 58 is a red herring, I think. Based on my experience it
appears randomly. My son says it is a known bug in the software. When I
actually used the wrong resistance (I cut the wires, etc.) to try to
start the car it wouldn't even crank. Spliced the wires back together
and it cranked just fine, but I am not getting a spark. According to
the owners manual the VATS will disable the starter and fuel pump, so I
think that if it is cranking it isn't VATS. Also, once the engine
starts the car will keep running even if the resistance changes.
Instead of dying the car will keep running but will flash the security
light to let you know there is a problem with the VATS system.

Other than that, I can't help you much -- mine isn't running yet,
either, and I am not familiar with the ignition system on it.
ds549@webtv.net - 13 Feb 2006 00:52 GMT
i dont think crank sensor give a code, but will cause what your
describing.is it losing the spark when she dies??

http://www.minibite.com/america/malone.htm
SamIam - 18 Feb 2006 13:13 GMT
Well...I put the old ignition module back on , tried to restart, wouldn't, checked codes..."17" ( spark reference circuit problem) and"42" (electronic spark timing circuit problem) now showed up. Since a code"41" (cam sensor circiut prroblem) didn't appear I figured it would have to be the crank sensor....FIGURED WRONG...replaced crank sensor...same problem, only code "42" was read this time. Either it's the cam sensor (I'll replace next) or I damaged the new crank sensor during installation (boy, I sure hope not). Anyone know the correct wy to troubleshoot the EST system without a scope???? Will keep you posted. This problem is wearing both me and my pocketbook down!!! Any support is greatly appriciated :) . Thanks, Mik

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SamIam
SamIam - 26 Feb 2006 20:55 GMT
Another update; changed camshaft sensor.........wouldn't start........repair shop, here we come!!

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SamIam
 
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