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1987-1991 Parley with regards to your 1987 to 1991 Bonneville, Olds 88 or Buick Le Sabre Please use General Chat for non-mechanical issues, and Performance and Brainstorming for improvements.

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Old 09-16-2004, 06:51 PM   #11
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you should do the "cheap and easy scantool" idea. All you need is a couple bucks and a notebook.


-justin
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Old 09-16-2004, 07:55 PM   #12
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For something like that you can use either an OTC 2000 with the very rare PC connector, Craig Moates PC scantool USB adapter, or the DIACOM software and cables. None of these do OBD II so are only good for cars before 1995 but that includes all of mine.

With a laptop on the seat you can just set it to record every frame and every parameter while you drive and watch what happens then it acts wonkey. Sure beats a bank of Brush recorders and a mile-long hallway.
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Old 09-18-2004, 10:51 AM   #13
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Hey Padgett, SSE, opensource, jrs3800 and others,
Thank you for the informative responses. I appreciate it.
Yesterday after running the car a few min from cold I got to the end of my street, turned the corner and the car sorta missed a beat on accelleration.
This could be happening during the transition from closed loop to open loop so
I immediately turned around, went home and changed the computer hoping this will solve the problem. I hope.
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Old 09-22-2004, 08:54 PM   #14
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OK guys I had some premature enthusiasm.
It died again today, this time on the interstate.
I was able to coast off of an exit and push it to an intersection.
Dead - No Spark.....again.
Doused the crank sensor with water and nothing.
After 30 min of farting around with it I finally pulled the module plug put it back on and she fired up. The first time it happened I messed with the crank sensor and she got going.
I don't know if whatever it is cooled off or is my module going? Or MAF?
No codes again.
Can anyone please help......
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Old 09-23-2004, 08:47 AM   #15
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wish I knew someone with a Vin C I could borrow a module from.
The crank sensor was replaced 4 yrs. ago so I was leaning toward the module
but just don't know. Today the car starts and runs fine.
I'm going to a junk yard to see if I can find anything.
Could any of the engine relays be bad when they heat up?
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Old 09-23-2004, 12:01 PM   #16
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Doesn't need to be a VIN C, can grab the entire module and coil assembly from a VIN L 3800 and it will plug right in.
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Old 09-24-2004, 10:33 AM   #17
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Thanks for the info.
I got another module from a 91 LeSabre vin C yesterday at the bone yard.
Going to swap them today.
Which relays would I check anyway? I'd like to swap a few just in case as I have
spares from the yard. They treat me good there too.
Spent some time in the morning at my local Buick dealer. They know me well and I have
been a long time customer.
Here is what I found.
* The service Mgr. wanted to know if I had injector pulse when the car died as well as no spark.
* My mechanic friend said to carry a 194 bulb with me and bend the bottom electrical
prongs down and plug into the injector socket.
* He said (I hope I didn't mix it up) If you have no injector pulse and no spark its your
crank sensor.
* If you have injector pulse and no spark its your module.
The crank controls pulse and spark if I have this right.
* There is no way to just test the module unless the car fails again.
* He also said a common problem is the connector socket that goes into the pins on the modules loosens up and looses contact.
I told him how I wiggled it and got it re started and drove home and cleaned and tightened
the socket prongs and he said I may have already fixed the problem.
I'm still going to swap the modules, believe me its no fun being stuck on the side of the highway with cars whipping by.
I don't want to be confident that its fixed yet until I drive it a few weeks with no problems
avoiding long trips. Who knows with these things?
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Old 09-25-2004, 10:54 AM   #18
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Question:
What would be an advantage of usaing a Vin L module on a Vin C?
Are they more reliable? or Better voltage?
They had them with the coils at the bone yard - 93, 94 lesabre, bonnes.
I'm like a kid in the candy store at these places.
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Old 09-25-2004, 11:19 AM   #19
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hotter spark, easier to identify a bad coil [IE 3 coils for 6 cylinders, you can replace only one coil], and all around better. Go for the delco from a 92-95 Series I. They will bolt right up. I am upgrading [waiting for parts], because the magnavox has been nothing but trouble for me.


-justin
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Old 09-25-2004, 11:58 AM   #20
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More than you ever wanted to know about 3800 coils and modules
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