Question about 1992 Chevrolet Lumina
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Posted on Jan 02, 2017
unhook speedometer cable from transmission and spin cable by hand it should turn smoothly if it des hook end to a low sped drill and see if it holds at a steady speed if it does the the problem is in the plastic speedo gear in the trans if it dos not remove the dash and inspect the connection on the speedo head
Posted on Oct 17, 2008
I had the same problem with my 90 daytona. The tach and the speedometer would work intermitantly. I took the whole gauge cluster out, and heated all the soldering with a solder gun to reflow the connections. It seems that this is a common problem with the connections cracking. You may not be able to see the cracks in the solder.
Posted on Oct 31, 2008
I had similar problems with speedos in two 1990 Audi 100s, it was some time ago, but the contacts on the circuit boards on the back of the speedo deteriorate and do not give a good contact. I bought second hand speedos, only to find they had similar problems, eventually it was very easy to fix, I shaved matchsticks to chisel points and pushed them into the circuit boards to add pressure on the contacts and improve connection. After that repair drove the cars for a few years and the problem did not recur. It was a long time ago and I cannot remember exactly where the matchsticks were placed but look for soldered points near the edges of the boards. Regards, Michael
Posted on Dec 08, 2008
It's your speed sensor at the transfercase on the drivers side i believe. Check the wire and clip to the sensor for any break or loose contacts.
Easy fix and is about a 30 min job to do with simple tools. Un-clip the wire conntection, remove the retainer bolt and slide and sensor out. To install just do everything in reverse and add transmisson oil if needed.
Most of the time, it's going to be the sensor. Keep in mind that there are two sensor's so make sure it's the one on the output shaft at the transfercase. The other one is closer to the front of the transmission on the same side with is the input Volosity speed sensor.
If it was your ABS sensor, you ABS light would come on in your dash.
Good luck and hope this helps
Posted on Apr 23, 2009
Speed sensor has failed.
It is basically a magnet sensor that reads the RPMs of the tranny.
It is screwed into the side of the transmission.
Do you have an aftermarket alarm installed, or remote start?
Sometimes those wires can be damaged if not installed properly.
It is $33.00 at autozone.
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Posted on Jul 09, 2009
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