Car broke down after the track tonight (Final Update) - Page 6 - 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 09-04-2007, 10:30 PM   #51
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Quote:
Originally Posted by theJMFC
. I nearly pulled a crank sensor myself a few weeks back, but on a whim, I checked for the correct voltage to the sensor, and it wasn't there. Turned out to be a bad ICM ground. That'* probably not your issue here, but it still might be worth checking for power to the sensor first.
I will also try this. What do i do, just hook up the multimeter to the sensor? What am i looking for, for voltage?
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Old 09-05-2007, 02:24 AM   #52
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Quote:
Originally Posted by TJ'sblackbonne
Quote:
Originally Posted by theJMFC
. I nearly pulled a crank sensor myself a few weeks back, but on a whim, I checked for the correct voltage to the sensor, and it wasn't there. Turned out to be a bad ICM ground. That'* probably not your issue here, but it still might be worth checking for power to the sensor first.
I will also try this. What do i do, just hook up the multimeter to the sensor? What am i looking for, for voltage?
Well, first, you're looking for voltage at the harness connection going to the sensor, not voltage from the sensor itself. The sensor is more of a switch than anything capable of producing voltage on it'* own. You probably know that, but I wanted to make sure.

I believe there are four pins on the connector. Sensor power (supposed to be 10v relative to the sensor ground, on my '89 at least), sensor ground, and two outputs (inner and outer balancer rings produce two separate signals). As for which is which though... I assume you have at least a Haynes or Chiltons, right? The wiring diagrams are in the back.

Then yes, just measure from "sensor power" to "sensor ground", and you should have at least 10v with the key on.

If you don't, remember that all wires to the crank sensor come from the ICM, and troubleshoot accordingly (make sure the ICM has good power and ground, etc.)

If you DO have voltage to the crank sensor, it may be possible to see an output signal from it by probing the sensor ground and output signal wires (one output at a time, of course) with the multimeter and watching for voltage (either in AC or DC modes) while a friend or significant other cranks the engine for you. Watch those fingers. This is NOT the right way to test a crank sensor really, but who has a scope? You won't see any on/off switching signal, but I could see an average voltage as an output when I did this on mine. It didn't prove that the sensor was working right, but I could at least tell that it was providing some kind of signal.

Hope that helps. Feel free to PM if that was confusing. It'* late...
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Old 09-05-2007, 08:20 PM   #53
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10.9 volts to the sensor.... so it most be the sensor.

Guess who is buying a HB puller tomorrow.....
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Old 09-05-2007, 10:22 PM   #54
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Don't forget the M6x1 bolts and washers you'll need. The kit won't have them.

Geterdun, mister.
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Old 09-05-2007, 10:40 PM   #55
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Will a generic HB puller from say advanced auto (for like 14 bucks) be good enough? They told me it may bend, but to me, it looks like it would pull 2 HB'* with ease. LOL



PS- It is sad, i am going throw all this just to get the car started again, HOW I CAN WORK ON MY KR PROBLEM
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Old 09-06-2007, 11:46 AM   #56
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Consider renting the puller (loaner tools) for free instead of buying. Advance or Autozone should have the loaners on hand. The bolts as mentioned won't be in the kit. M6x1 pitch at least 80mm long.
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Old 09-07-2007, 10:33 PM   #57
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Well i have some pics uploading.............






Crank sensor was the problem ( i havent started it yet, but after you see the pics you will agree). All in all took only about 35 minutes to do it lol, so easy i wanted to cry. All i need now is a torque wrench, mine doesnt go high enough. So i might rent one tomorrow from autozone and it should be running tomorrow night. I am very happy right now, and will be estatic after i hear it pur again.
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Old 09-07-2007, 10:34 PM   #58
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PS... M6X1X80mm bolts are freakin hard to find. It took me 12 dollars in gas, about 15 different places and over 2 dollars a piece for the bolts haha. But i got them
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Old 09-07-2007, 10:49 PM   #59
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Here you go.. blurry but deal with it


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As you can kinda see, 1 notch is broken like right in half. And the sensor is sorta melted by the belt that was wrapped in the fins of the HB. LOL. Seems like a good call guys, I will have start up videos tomorrow
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Old 09-08-2007, 03:20 AM   #60
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well, im happy you found that problem and that it a easy fix get that engine running
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