Question about Dodge Ram 3500
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Posted on Jan 02, 2017
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
Sounds like either your speedometer cable, your nylon gear on the side of the tranny where the cable ties in, or the odometer itself is shot. One of those three will set you straight. If you are able, remove the cluster, take the cable off the back, and pull it out of the sheath. You will see if its broken or not from there. If not, slide it back into the sheath, then you have to find out where the sheath meets the tranny, and pull it off of there. Then, you can get someone else to watch the speedo as you turn the cable from the bottom. If it works, great, if not, then its your cluster/odometer/speedo. If it does work, the small gear in the transmission is shot.
Posted on Feb 14, 2009
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
Check the connection at the speed o sensor.
It's in the differential cover, about 3" above the filler plug. Be sure
it's mechanically secure, and check the contacts (both sensor and
connector) for signs of corrosion or oxidation. As much as possible,
examine the harness for any signs of a break or tear, or for signs the
wire might have been cut. If it's not wiring, then it's either the
sensor or the speedometer head (which is electronic). Possibly, the
power supplied to the speedo head where it's mounted in the dash
cluster is intermittent.
The speedometer in my 745 with 160K has been
jumping around a little on the highway. The cruise control would try to
follow the erratic speedometer, then disengage. I suspected a broken
wire at the sending unit. What I found was a burnt wire at the sending
unit. The wire had grounded out on Volvo's safety wire. I suspect that
the safety wire slowly eat through the insulation on the wiring,
causing it to ground out. The plug was melted and an inch or so of
insulation on the green stripe wire. Make sure the safety wire is not
cutting into the two wires on the sending unit at the back of your rear
end. [Response: Scott] Check the instrument cluster grounds under the
dash and in the right footwell. In 88 there were some 700 series cars
that would register up to 60 mph while sitting still and the grounding
problem was the cause.
Posted on Jun 29, 2009
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