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1993 Buick, two pistons not firing (Distributorless Ignition System question)
Anyone,
I am repairing my 1993 Buick Regal Custom, 3.8L. I left it running when I went into the store the other day, then when I drove it away it was running rough. A timing gun revealed that 2 pistons weren't firing. The car uses a Distributorless Ignition System, and has 3 ignition coils to power the 6 cylinders (firing 2 at a time). My first thought was to try repalcing the cables running from the coil to the spark plugs. This did nothing. My second thought was to replace the one coil that wasn't firing. This did nothing, the new coil also didn't fire. Next in the logical line is the Distributorless Ignition Module. Unfortunately this is a $80-$300 part, and I would like to be sure this will solve the problem before I run off an buy one. My questions are these: 1. Should I be testing the crank position sensor, and is it possible that it could be damaged in such a way that it would somehow only trigger 2 of the coils? 2. Could wiring be to blame? 3. Could the computer be to blame? The module would be easy to repalce (only a few bolts), but the cost leads me to ask these questions first. Any help would be greatly appreciated! Many thanks in advance. Joe tfurrows -a-t g,mail |
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#2
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1993 Buick, two pistons not firing (Distributorless Ignition System question)
Are the cylinders not firing paired on the same coil? You left that out.
> wrote in message ups.com... > Anyone, > > I am repairing my 1993 Buick Regal Custom, 3.8L. I left it running when > I went into the store the other day, then when I drove it away it was > running rough. A timing gun revealed that 2 pistons weren't firing. > > The car uses a Distributorless Ignition System, and has 3 ignition > coils to power the 6 cylinders (firing 2 at a time). My first thought > was to try repalcing the cables running from the coil to the spark > plugs. This did nothing. My second thought was to replace the one coil > that wasn't firing. This did nothing, the new coil also didn't fire. > > Next in the logical line is the Distributorless Ignition Module. > Unfortunately this is a $80-$300 part, and I would like to be sure this > will solve the problem before I run off an buy one. My questions are > these: > > 1. Should I be testing the crank position sensor, and is it possible > that it could be damaged in such a way that it would somehow only > trigger 2 of the coils? > 2. Could wiring be to blame? > 3. Could the computer be to blame? > > The module would be easy to repalce (only a few bolts), but the cost > leads me to ask these questions first. Any help would be greatly > appreciated! Many thanks in advance. > > Joe > tfurrows -a-t g,mail > > ----== Posted via Newsfeeds.Com - Unlimited-Unrestricted-Secure Usenet News==---- http://www.newsfeeds.com The #1 Newsgroup Service in the World! 120,000+ Newsgroups ----= East and West-Coast Server Farms - Total Privacy via Encryption =---- |
#4
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1993 Buick, two pistons not firing (Distributorless Ignition System question)
I think its worth throwing an ignition module at it, but not at $300.
Purchase one from a junk yard; they are usually garaunteed for 90 days if they fail. Drawback is that they will usually not refund your money, but will give you credit for your purchase. This isn't necessarily bad, noting that you have an older vehicle that might benefit from that credit. Shop around, but definately contact Rich. Jim |
#5
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1993 Buick, two pistons not firing (Distributorless Ignition System question)
With the given symptom that only one of the three is not being fired,
and the plug wores/plugs have been replaced, the answer to all three of your questions would be NO! Coil primary circuits are activated from within the ignition module itself. To avoid spending alot of money, replace the ignition module with one from a junkyard (usually garaunteed for 90 days.) Avoid the HYPE... Your car ran just fine on used parts till now. Jim |
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