94/95 bonneville problem - 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 07-15-2007, 03:39 PM   #11
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It'* the 3/2 that you mentioned.

The protocol is really neither one. It'* a crossbreed of the two. It uses OBD2 connection, but uses ALDL coding. Bottom line is there is no way to do the paperclip trick like you could in earlier years, and OBD2 code readers don't understand the data.
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Old 07-15-2007, 04:57 PM   #12
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1) When the car stalls out, around the time of the dings do all of the gages still function?

If you are rolling along and the engine stalls, the speedo should still show speed as well as Voltage and engine temp... These should not drop out..

2) when was the last time you removed and cleaned the Positive battery cable?

The Positive cable on these cars seems to do a lot of acidic corroding..

3) When the Car stalls it will alway start up, Correct?

If you get to a point where the car won't start then you'd want to check for spark, if there is no spark at that point you may then want to look at the ICM or Crank sensor or related wiring..

4) When the car does stall does it Stumble or stutter first, or does the car simply stop? I will bet the car stalls and then she gets the chime from the car ( Ding - Ding - Ding )..

5) Have you checked the fuel pressure?

Go ahead and check those grounds as well, Make certain the positive battery cable is clean and free of corrosion..

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Old 07-15-2007, 07:29 PM   #13
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Quote:
Originally Posted by 1991vert
i have an actron scanner
Which Actron scanner do you have? The CP9110 and CP9145 (and CP9150) can read 94s and 95s. We can help you out with the right cabling for the Cp9110 (if it'* of any help).
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Old 07-16-2007, 01:21 AM   #14
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all of the accessories stay on - radio, lights, etc. i forgot to include that when i wrote the post. also my actron OBDII cable fits the plug under the dash.

the rpms fall to 0
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Old 07-16-2007, 01:25 AM   #15
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1) When the car stalls out, around the time of the dings do all of the gages still function?

If you are rolling along and the engine stalls, the speedo should still show speed as well as Voltage and engine temp... These should not drop out..

-she says she still has accessories like the radio and lights

2) when was the last time you removed and cleaned the Positive battery cable?

-i will take a wire brush to it tomorrow just to be sure

3) When the Car stalls it will alway start up, Correct?

-correct. there are no "hot start" symptoms. it cranks right over

4) When the car does stall does it Stumble or stutter first, or does the car simply stop? I will bet the car stalls and then she gets the chime from the car ( Ding - Ding - Ding )..

-i will have to ask her which came first tomorrow, the chicken or the egg. in this case the feeling of anger from her car randomly dying or the ding ding ding

5) Have you checked the fuel pressure?

-no. do these cars have a shrader valve to get a gauge on?
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Old 07-16-2007, 01:28 AM   #16
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Quote:
Originally Posted by sandrock
It'* the 3/2 that you mentioned.

The protocol is really neither one. It'* a crossbreed of the two. It uses OBD2 connection, but uses ALDL coding. Bottom line is there is no way to do the paperclip trick like you could in earlier years, and OBD2 code readers don't understand the data.
the paperclip trick worked on my mustang, before i had the scanner. you could either watch the CEL inside the car or use a light bulb under the hood

thanks for all the help so far, hopefully i can find this gremlin
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Old 07-16-2007, 09:40 AM   #17
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When you say the cables are clean. Did you remove the boots. The reason for harping on it is the experience we have seen with corrosion under the boots causing these issues.
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Old 07-16-2007, 11:53 AM   #18
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i removed the positive boot and the negative side didnt even have a boot lol
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Old 07-16-2007, 11:55 AM   #19
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it dinged a few times the other day and bogged, but never died and it caught itself. do crank sensors do this?
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Old 07-16-2007, 01:38 PM   #20
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It'* tough to say..

I've seen a crank sensor "hiccup" a car to the point of resetting the run time counter..Could be pcm...

Any luck on the ground buss?
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