The four "deadly" grounds
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From: Irvine California
The four "deadly" grounds
I remember reading 6 or 7 months ago about 4 grounding points that should always be checked. I searched, but I cannot find this post. Does anybody know which these are? I am now just getting time to get my '88 A/T dialed in a bit and I want to start with the "known" problems that can create a lot of headache.
Thanks in advance.
PS - may have been more or less, but something like four trouble spots.
Thanks in advance.
PS - may have been more or less, but something like four trouble spots.
Three Wheelin'
Joined: Apr 2007
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From: Bellevue, WA
Drifting
Joined: Dec 2001
Posts: 2,362
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From: Sackville, Nova Scotia
I did all my ground points a little while back....
Below are all the pics I saved/took...
From my car....
Under big pin connector
In front of radiator
On passenger side strut
Above fuse panel
Driver-side strut
Rear Hatch area
Below are all the pics I saved/took...
From my car....
Under big pin connector
In front of radiator
On passenger side strut
Above fuse panel
Driver-side strut
Rear Hatch area
Three Wheelin'
Joined: Apr 2007
Posts: 1,306
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From: Bellevue, WA
Race Director
Joined: Sep 2007
Posts: 12,162
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From: Johnson City, TN
Very good pictures!
Wiper motor and coil grounds are for radio noise suppression.
There is a ground for the antenna amp way up under the right dash near the windshield., above the glove compartment box.
I think there is also a ground for antilock brakes beneath drivers side inner fender liner (true for 84 thru 86 and I believe later cars too)
There are some ground splices deep within the engine harness itself.
Wiper motor and coil grounds are for radio noise suppression.
There is a ground for the antenna amp way up under the right dash near the windshield., above the glove compartment box.
I think there is also a ground for antilock brakes beneath drivers side inner fender liner (true for 84 thru 86 and I believe later cars too)
There are some ground splices deep within the engine harness itself.
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Nordschleife Master
Joined: Jun 2006
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From: ɹəpun uʍop 'ʎəupʎs
Handy picitures.
It does seem you're missing a pic of the XII ground, and that the main engine ground strap is mis-labelled as XI.
XII and XI are the grounds for the ABS/PSD, front brake pad wear sensors, and RDK (tire pressure). Jeff's got a picture of XI - the "passenger-side strut" one, and XII is on the aft of the strut tower housing on the other side of the car.
Jeff's photo shows two connectors in it as his '88 didn't have RDK from factory - RDK cars have three plugs in that grounded barrel connector (which is 89MY for RoW, and I believe 1990 for North American cars).
It does seem you're missing a pic of the XII ground, and that the main engine ground strap is mis-labelled as XI.
XII and XI are the grounds for the ABS/PSD, front brake pad wear sensors, and RDK (tire pressure). Jeff's got a picture of XI - the "passenger-side strut" one, and XII is on the aft of the strut tower housing on the other side of the car.
Jeff's photo shows two connectors in it as his '88 didn't have RDK from factory - RDK cars have three plugs in that grounded barrel connector (which is 89MY for RoW, and I believe 1990 for North American cars).
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Try this post in the 'sticky' for the forum: https://rennlist.com/forums/2220328-post33.html
(updated with link to Jeff's pics)
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