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Registered
Join Date: Jan 2003
Location: Los Angeles, CA
Posts: 2,099
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Turn the lights on speedo jumps to 50mph
As I continue to track my electrical gremlins I am looking for any help from someone who has solved this problem.
When I turn the lights on while idling the speedo jumps to between 30 and50 mph. If I just turn the running lights on it still happens. If I adjust the interior dimmer from the light switch stalk the speedo changes. Uf I am driving the car the speedo jumps all over the place. The grounds have all been cleaned Any idea's? Thanks
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1982 SC |
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08-18-2011, 01:29 PM
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Join Date: Jun 2009
Location: Manhattan Beach, California. Factory Delivery-Original owner-Retired engineer
Posts: 5,238
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Quote:
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1986 911 Targa. Per Road and Track magazine: Only in L.A.: In the window of a bar in Hermosa Beach, California. "Happy Hour prices during all car chases." |
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08-18-2011, 01:32 PM
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Join Date: Mar 2002
Location: Dunstable, MA
Posts: 657
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speed sensor on the tranny?
What year car are you talking about? Rich |
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08-18-2011, 01:32 PM
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Registered
Join Date: Jan 2003
Location: Los Angeles, CA
Posts: 2,099
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Sorry I should have provided more info.
The car is a 82 SC. I left the car under my car cover during the incredible rains we had here in LA last year. When I took the cover off the car had 2 inches of water in it for a week or so. I drained it and it started right up. Over the next few months things must have started corroding. I had a starter problem. I must have a intermittent to ground short somewhere as after replacing everything and running a direct push button starter switch it will still sometimes not start.Sometimes it starts right up with the key, some times it starts right up with the button and sometimes I push the button and somewhere the current is going to ground as the solenoid will not engage. I have taken the fuse panel out and cleaned everything. I have put a new ground strap on and cleaned every contact I can get at. The light problem started before the "flood" so I guess the corrosion or what ever the initial problem was just got worse. I am also having issues with warming the car up, it will buck, backfire and quit. ONce the car is warmed up and running everything is great
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1982 SC |
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08-18-2011, 01:43 PM
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Join Date: Mar 2002
Location: Dunstable, MA
Posts: 657
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Wiring harness is on the floor, probably could use a good cleaning.
Rich |
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08-18-2011, 02:18 PM
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