Obd on a 93 bonnie sc - Page 4 - 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 10-15-2013, 03:31 PM   #31
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thats normal. when troubleshooting its best to find one symptom and fix it, if you start looking at a bunch of other stuff the focus goes from simple to overly complex. you know it doesnt spark and you didnt get a ckp signal at the icm plug. so you need to back track up to the sensor and see why you arent getting a signal. its likely what RJ said about the balancer/sensor mismatch. if you are using a 93 pcm, i would see if the 93 sensor and balancer will fit the 92 engine.
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Old 10-15-2013, 03:45 PM   #32
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I checked rockauto, it looks like the cps from the 93 would fit, although i wouldnt be using the one little pinion hole, which i dont think is a big deal since it has 2 screws on the top and bottom, as for the harmonic balancer i dont know, it looks the same as mine 3x18x but the part numbers are different, maybe ill go to partsource with mine and compare with a 93 there.
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Old 10-15-2013, 03:48 PM   #33
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is that a parts store?
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Old 10-15-2013, 03:50 PM   #34
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Yes I live in canadia. Reading this forum, im jealous of some of your guys parts stores, seems like parts are way cheaper in the us.
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Old 10-15-2013, 04:47 PM   #35
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ussually just get stuff from rock auto, or amazon lately. the parts stores are way expensive. the only thing i get at the local parts stores is heavy stuff that is a pain like rotors or cv shaft.
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Old 10-15-2013, 11:01 PM   #36
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I was studying the pics, and it looks like the tone rings are closer together on the 93 than the 92. I would be inclined to get junkyard parts at this point, because you still have yet to fire up this engine. All the gremlins come out when it fires up. The less money you throw at it, the better, at least until you know where you stand.

And I believe the L67 block is the same 91-95, so I would expect the CPS and balancer to bold right up.
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Old 10-15-2013, 11:12 PM   #37
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Okay, so i re adjusted the spacing and finally I'm getting the reading back from the cps.
So according to the icm test that justin provided, it would seem my icm is bad?
I will be going to the junkyard tomorrow and grabbing what i can find there!! They have afew 3800s!
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Old 10-16-2013, 07:29 AM   #38
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you cant really tell if its right with a meter only that its putting some signal out
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Old 10-17-2013, 01:56 PM   #39
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Hmm, well i grabbed a few icm'* from the pick your part, if its not the icm or the cps what could it be? It appears that 92 and 93 used the exact same pcms!!
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Old 10-17-2013, 02:18 PM   #40
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you put a 93 balancer and cps on it?
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