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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 11-03-2006, 04:08 PM   #51
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ok im haveing a hard time finding that ground near the oil pressure sender

is that the one that connects on top of the engine bay fuses box, because i cleaned that to
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Old 11-03-2006, 04:24 PM   #52
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There is only one ground, and it goes to the ICM bracket. You are not getting the ground from the cam and crank sensors? Hmm...ok, do this. Take the grey/red wire that is common to those sensors, trace it to the ICM, and ground it with a jumper wire and see what happens.

You very well could have pinched or unseated the ground wire(*) in the ICM harness.
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Old 11-03-2006, 04:31 PM   #53
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Quote:
Originally Posted by sandrock
There is only one ground, and it goes to the ICM bracket. You are not getting the ground from the cam and crank sensors? Hmm...ok, do this. Take the grey/red wire that is common to those sensors, trace it to the ICM, and ground it with a jumper wire and see what happens.
no i geting power to all the wires on bouth cam and crank sensors plugs no power at ground wires
ground has ground

sorry
should thay all have power with key on
and if the cam sensor go'* bad can that short out the crank sensors signal since thay are linked? i dont have a o-scope to test the signal but the cam sensor is the only one thats not new from store

maybe that new ICM i had was bad, i got bad luck like that,,
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Old 11-03-2006, 05:00 PM   #54
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I believe that all should have a voltage but the ground. The source will have the higher voltage, with the return being a few volts lower. When you say "ground is ground" is that because you are reading zero volts there, or have you actually done a resistance measurement showing that it is actually at ground?
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Old 11-03-2006, 05:09 PM   #55
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yes The source has the higher voltage
yes resistance measurement showing that it is actually at ground
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Old 11-03-2006, 05:24 PM   #56
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OK, good. Do you have a digital, or analog meter? As you don't have an oscilliscope, you can still check for pulses coming from the sensors with the meter. It is a lot easier to follow the bouncing needle than it is to follow changing voltages on a digital meter. Plus, they are a bit slow in responding. Measuring at the output of the sensors, see if you can see voltage changes (pulses) or if it remains steady while cranking.
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Old 11-03-2006, 06:39 PM   #57
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i have a digital one..

ill try that test..its to dark out now but i will get back to you
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Old 11-05-2006, 02:45 PM   #58
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im gona try that today
ill be working on it all day.ill start from scratch, see if i find anythin i may have missed
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Old 11-05-2006, 03:07 PM   #59
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Can you try swapping batteries with another vehicle?
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Old 11-05-2006, 04:12 PM   #60
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Quote:
Originally Posted by Technical Ted
Can you try swapping batteries with another vehicle?
yes i got one coming later...




ok i have

6.6 at H when key is on..jumps up n down when cranking
.04 at G when key is on jumps up when cranking
6.6 at J when key is on..jumps up n down when cranking
L has ground
M has ground
P has power
N has 10 v

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