No spark... need help. - Page 2 - GM Forum - Buick, Cadillac, Chev, Olds, GMC & Pontiac chat


1992-1999 Series I L27 (1992-1994 SE,SLE, SSE) & Series II L36 (1995-1999 SE, SSE, SLE) and common problems for the Series I and II L67 (all supercharged models 92-99) Including Olds 88's, Olds LSS's and Buick Lesabres Please use General Chat for non-mechanical issues, and Performance and Brainstorming for improvements.

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Old 07-06-2004, 05:37 PM   #11
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Quote:
Originally Posted by russianpolarbear
Quote:
Originally Posted by xZim
something that I failed to mention:

It had been dying from time to time while driving, I thought that replacing the fuel pump had fixed the problem... but I suppoe it didn't afterall..

Recnetly, it had been dying while going down a hill and making a stop at the bottom of it, with no less than a 1/4 tank of gas...

I don't think it'* the pump as I drove it for a couple of weeks after replacing it and it was driving just fine for the most part.

I'm off to work.
I'll talk to you all soon - lunch maybe
Alot of cars do that....
Hm... Suppose I'll figure that one out later...
I'll be back this evening.
Thanks for the info.
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Old 07-07-2004, 12:29 PM   #12
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Quote:
Originally Posted by willwren
I think the PRNDL switch should prevent it from cranking, not simply disable spark.
The PRNDL _only_ prevents it from cranking; it does nothing about enabling or disabling spark.
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Old 07-07-2004, 02:05 PM   #13
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Hm, so it sounds like we're back at stage one.

If I take it into a dealer to have them use a scan tool or something, will the tool be able to pull more error codes than just what the blinking light is telling me?

Or is there some otherway I can go about diagnosing the problem?

I'm starting to question weather or not I should have even replaced the fuel pump before googling some more... I'll be if I would have found this forum before then, it would have saved me tons of time and money.
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Old 07-07-2004, 03:26 PM   #14
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Quote:
Originally Posted by xZim
Hm, so it sounds like we're back at stage one.
Couple of things, in no particular order: the error codes are repeated three times each during readback before the ECM goes on to the next code (if any). The initial 12 code, which you will always get, serves a sort of double-duty: it indicates that the diagnostic system is up and running, and also indicates No Tach Signal, which is correct since the engine isn't running. The "12" will be repeated three times, then it moves on to the next stored code, does that one three times, and so on, until it'* done them all and comes back around to "12" again.

I'm a little puzzled about your reference to a distributor post, as I was under the impression that you've got a coil pack under the hood, not a distributor, unless we're talking about a different car here...? In any event, if you've got an intermittent ignition system for some reason (e.g. bad coil pack, loose harness connections, loose plug wires), your engine may quit on you at random intervals, as you're seeing. I don't think your fuel pump is the issue here, from the symptoms you're describing; it sounds more like an electrical problem.
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Old 07-07-2004, 06:15 PM   #15
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Quote:
Originally Posted by acg_ssei
Quote:
Originally Posted by xZim
Hm, so it sounds like we're back at stage one.
Couple of things, in no particular order: the error codes are repeated three times each during readback before the ECM goes on to the next code (if any). The initial 12 code, which you will always get, serves a sort of double-duty: it indicates that the diagnostic system is up and running, and also indicates No Tach Signal, which is correct since the engine isn't running. The "12" will be repeated three times, then it moves on to the next stored code, does that one three times, and so on, until it'* done them all and comes back around to "12" again.

I'm a little puzzled about your reference to a distributor post, as I was under the impression that you've got a coil pack under the hood, not a distributor, unless we're talking about a different car here...? In any event, if you've got an intermittent ignition system for some reason (e.g. bad coil pack, loose harness connections, loose plug wires), your engine may quit on you at random intervals, as you're seeing. I don't think your fuel pump is the issue here, from the symptoms you're describing; it sounds more like an electrical problem.
Bad reference, my fault. There'* no distributor on my car, it is infact the coil pack that I'm talking about.
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Old 07-07-2004, 10:29 PM   #16
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Guys, could it be a bad ignition module? I don't mean to throw parts out randomly here, but if he is not getting spark on any of the coils....
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Old 07-07-2004, 11:19 PM   #17
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Default spark

How old is the crank sensor?
Has the electrical grounds been checked?
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Old 07-08-2004, 02:31 AM   #18
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Default Re: spark

Quote:
Originally Posted by SSEBONNE4EVA
How old is the crank sensor?
Has the electrical grounds been checked?
As far as I know, the crank sensor, as well as most other parts of the vehicle are all stock, so figure about 12 years...
I've not checked anything for ground, is it easy to do yourself?
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Old 07-08-2004, 09:10 AM   #19
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very. follow your battery'* negative to the motor.
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Old 07-08-2004, 11:59 AM   #20
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Default crank sensor

The next time it won't start throw some water on the crank sensor.
If it starts right up change it.....its an intermitten fault in the sensor.
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