need help! bouncing speedo and ABS light issues
Thread Starter
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Elder User
Joined: Jan 2006
Posts: 956
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From: Bend, Oregon
need help! bouncing speedo and ABS light issues
I can't figure this one out!...yeasturday the speedo worked fine, driving home last night i noticed the ABS light was on, then the speedo goes totally flat, I stop, then start out driving again, the speedo starts bouncing!...any suggestions? And whats with the ABS light? my fluids are fine.
Post Fiend
Joined: Apr 2004
Posts: 6,473
Likes: 4
From: Lafayette, IN
Check your Vehicle Speed Sensor (VSS). It's at the end of the wire that goes to your rear differential (the VSS is the part that is actually attached to the differential). It may be loose, need to be cleaned, or replaced. Typically they just get fouled up or are loose, so a couple minutes of cleaning and fiddling with them will take care of the problem.
Jason
Jason
Junior User
Joined: Dec 2004
Posts: 58
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I've had an ABS light a couple of times. First time I needed new rear wheel brake cylinders. Second time, just recently, was when I had the bed off the truck. When I put it back on a connected the wiring harness to the tail lights, the ABS light went out.
I've got an 87 F150.
Also had a bouncing speedo on my 77 Bronco. Replaced the cable and it corrected the problem.
I've got an 87 F150.
Also had a bouncing speedo on my 77 Bronco. Replaced the cable and it corrected the problem.
Post Fiend
Joined: Apr 2004
Posts: 6,473
Likes: 4
From: Lafayette, IN
I've had an ABS light a couple of times. First time I needed new rear wheel brake cylinders. Second time, just recently, was when I had the bed off the truck. When I put it back on a connected the wiring harness to the tail lights, the ABS light went out.
I've got an 87 F150.
I've got an 87 F150.
Also had a bouncing speedo on my 77 Bronco. Replaced the cable and it corrected the problem.
Jason
Thread Starter
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Elder User
Joined: Jan 2006
Posts: 956
Likes: 0
From: Bend, Oregon
after you suggested I check out the VSS, I went out and looked at the connection, Its been pretty snowy here so there's alot of cinder build up, around the connection...I'll let you know what i come up with Cheers
