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Old September 30th, 2008, 09:57 AM   #1
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Default any automotive electrical gurus out there?

Kind of stuck on an electrical problem on a 95 olds Cutlass Supreme. This is one of the strangest things I have ever seen when it comes to electrical problems. When the car is started everything works fine, heater, windows, moonroof, etc., but after it is put into drive and starts moving all that stuff stops working AND the trans feels like it is slipping. Once in a great while it will all stay working just fine and no problems.. along with the trans NOT slipping. Evidently there is some electronics in the trans or outside of the trans to cause this "slipping" feeling. Is there ANYONE that can take a stab at telling me what might be wrong with this and how to fix it?
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Old September 30th, 2008, 10:23 AM   #2
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loose/missing ground.
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Old September 30th, 2008, 11:02 AM   #3
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maybe a damaged wire harness that is streched when put into gear
Same issues in reverse? (heater, windows, moonroof, etc)
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Old September 30th, 2008, 11:03 AM   #4
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yes, Any gear
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Old September 30th, 2008, 11:20 AM   #5
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have someone sit in it with it running and go wiggle some harnesses under the hood.
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Old September 30th, 2008, 03:17 PM   #6
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Find what is common for the circuits that dont work when put in drive, maybe power or ground, that is always a good place to look if you have multiple things not working, find what is common to them, other than that it is really hard to diagnose something like that with out having the car in front of me and with all the proper service infromation, oh and the fact that I never really worked on a ford
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Old September 30th, 2008, 07:54 PM   #7
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if you can find and post an electrical schematic, I can tell you the possible causes...my first guess would be a ground that is attached to the trans (if its what I'm thinking, near the starter, straight back from the hood latch, bottom of bellhousing there are several grounds attached to a stud) or possible the wire harness near the power distribution module (underhod fusebox)...

oh, and mean greenEXJAY...Ford did not build the OLDSMOBILE Cutlass Surpreme...
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Old September 30th, 2008, 08:49 PM   #8
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Quote:
Originally Posted by Yota Bill View Post
if you can find and post an electrical schematic, I can tell you the possible causes...my first guess would be a ground that is attached to the trans (if its what I'm thinking, near the starter, straight back from the hood latch, bottom of bellhousing there are several grounds attached to a stud) or possible the wire harness near the power distribution module (underhod fusebox)...

oh, and mean greenEXJAY...Ford did not build the OLDSMOBILE Cutlass Surpreme...
Wow I am retarded, for some reason I though this was on a ford taurus, must have be something else I was thinking of.
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Old October 2nd, 2008, 07:01 PM   #9
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What I have noticed is, when putting the vehicle into drive and start to move,if I DO NOT hear a faint, fast, clicking noise, the climate controls go off and the trans seems to go directly to 3rd gear and will not shift to overdrive. If I DO hear that noise it shifts fine and everything stays working fine.
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Old October 2nd, 2008, 07:04 PM   #10
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If someone can find a wiring diagram for this I would IMMENSELY appreciate it.
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Old October 2nd, 2008, 11:00 PM   #11
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I think I may have a book on that vehicle, I'll look tomorrow...gotta get the pole barn cleaned up anyway...
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Old October 7th, 2008, 11:59 AM   #12
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The first thing i would look at is the PRNDL switch, located on top of the tranny, right under the shift cable. I've seen them short out before and cause all kinds of goofy things. Most of the time its from water entering in from either a crack in the plastic or poor connection. Go down to your local bone yard and grab another one to see if it changes anything. That will be the fastest and easyist thing to try, just make sure you adjust it, there is a little line on the plastic housing to line up when in netrual.
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Old October 7th, 2008, 01:02 PM   #13
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Thanks millersracing....I will try that.
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Old October 10th, 2008, 01:55 PM   #14
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Did the PRNDL switch fix this problem??? Or are you still having issues?
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Old October 10th, 2008, 02:06 PM   #15
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It's still doing it..just not as often now.
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