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Re: blanking gauges, edu = bad ground 1 Saabers Like This Post!
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Posted by John Fitzgerald [Email] (#77) [Profile/Gallery] (more from John Fitzgerald) on Mon, 14 Aug 2017 17:57:00 Share Post by Email
In Reply to: How soon we forget, JerseySaab [Profile/Gallery] , Thu, 10 Aug 2017 14:57:54
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Your older post from two summers ago [Jul/Aug 2016] runs into the same idea ... here's my similar saga:

'98 CSE, now with 241k mi, began having the exact symptoms yours does approx two years ago. Except one: engine doesn't die. Which I think is a function of TCS - I've never owned a '93, and likely never will, or a TCS optioned '94.

Back to the problem. Began on hot days in the summer, usually resolved with a 'whack' on top of the instrument panel dashboard. Gradually worsened, and began showing up in cold weather, too, finally getting so bad we'd just drive it without those gauges, resetting trip odo in lieu of a fuel gauge. ACC fan works, system just won't work correctly in 'auto' mode or run the AC compressor.

I took the dashboard off, put some dabs of Deoxit Gold on the edu connectors and things were better. For a month.

Began driving it with the ACC pulled out of the dash slot, so I could wiggle the edu connection when the instruments began to fail. This didn't work too well, and I started to wonder about breaking some little connector to the edu.

Finally sucked it up and pulled the dashboard top off again. Cleaned every connector I could find, paying special attention to the [larger] ground near the windshield edge of the left front speaker. That's the ticket, apparently, as it worked perfectly for over a year.

Just starting to need some 'whacking' again, especially when it sits in the hot sunshine for hours. There must be some resistance building up, whether just one wire in the bundle, or another ground. I don't know. If the car is parked in the shade for hours, or is started before the dash gets hot-soaked, all works fine.

You'll get it going. Best of luck.

Sincerely,
John
Burlington, Wisc

'73 96 RHD sold after four years in Middle Barton, Oxfordshire, UK
'80 99 sold after 20 years/192,000mi
'86 9kT sold after 12 years/approx 121,000 mi
'87 9kT sold after 9 years/approx 174,000 mi
'97 CSE given to my son after 8 years @ 245k; he sold it at 254k mi
'95 Aero 146,xxx mi sold

'97 Aero 298,xxx mi – bought used w/ 20k mi; our longest runner
'98 CSE 241,xxx mi bought at 184k
'08 9-5 127,xxx mi my wife's daily driver

and a couple of 'non-Saabs':
'01 Suburban 166,xxx mi
'03 BMW 330 Cic 75,xxx mi
'14 Mercedes E350 37,xxx mi

EDU and dash instruments failing

_______________________________________
John
Burlington, Wisc
'73 96 RHD sold after four years in Middle Barton, Oxfordshire, UK
'80 99 bought new, sold after 20 years/192,000mi
'86 9kT picked up at Trollhatten, sold after 12 years/approx 121,000 mi
'87 9kT sold after 9 years/approx 174,000 mi
'94 CSE given to my son after 8 years @ 245k; he sold it at 254k mi
'95 Aero 146,xxx mi sold
'98 CSE 248,xxx mi gave it away
'97 Aero 317,xxx mi my daughter’s school car … gave away [we put 300k mi on it]
still driving:
'97 CSE 170xxx mi 'project car' for myself and my daughters to drive
'07 9-3 2.0T 240xxx
'08 9-5 191xxx mi my wife's daily driver
and a couple of 'non-Saabs':
'01 Suburban 201,xxx mi
'03 BMW 330 Cic 84,xxx mi
'14 Mercedes E350 103,xxx mi
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