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2000 Tundra:

A week or so back the speedo started occassionally dropping to zero then bouncing back up. It gotten more and more frequent over the next couple of days and it no longer functions at all now.

The dealer says they have never heard of the sender/sensor going and a search of several sites shows little to nothing. The part number the dealer gave me for the sender is 8318112020 but even googling that p/n gives only a couple of hits and they are seemingly unrelated.

Anyone ever have this happen? Is the part number the dealer gave me correct? Any other possible causes before I guess and drop $250 on a sender?

Thanks in advance.
 

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This is probably apples and oranges and I am not even sure if the Tundras even use them anymore but my Ford Exploder did the same exact thing and it was a bad speedo cable.
 

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Have you tried pulling the connectors on the back side of the instrument cluster, cleaning, and reconnecting them? It may be that simple.
Other than that,I would take it to a speedo shop
before I poured any more money into unnecessary parts. It sounds like this is a new problem to everyone onboard.
Let us know what the problem/solution was.

 

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Has anybody else had this happen? My speedo started acting up about a week ago in my 05 Tundra. After sitting over night, it either bounces around or doesn't move at all. After driving 1-2 miles, it starts working fine with no problems. Any ideas?
 

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Take apart the dash and lube the cable if it has one. Worked like a chime in many other vehicles. I used graphite to lube it.
 

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the speedo is electronic, no cable. removed instrument panel, checked pins, and applied some dielectric grease. same at speed sensor on tranny. still does it.
 

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I have the same problem, check engine light is on reading P0500 code(vss malfunction), replaced the speed sensor with a new one from Toyota and still didn't fix the problem. Speedo still reads 0 mph!!!! Guess I will recheck all the wire connections that has anything to do with vehicle speed. Anyone finds a solution please let me know and i will do the same.
 

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Sounds like you have a bad wire or bad connection on the back of the cluster. Did you install any aftermarket parts? Has anyone been messing with yer vehicle? You could probably check the interior grounds to be on the safe side. ;)
 

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Agree with BamZip. If you haven't installed any aftermarket parts or had service work performed near/around the speedo or ECM, then you should check for loose connections. Start from the outside and work your way inside. The speed sensor may have come loose under the truck.
 

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I'll dig up this old thread in hopes it may help someone else.

I just recently had this issue with an 05 double cab 4x4 tundra with 123k. No CEL, no brake or abs lights, nothing at all. Symptoms were my speedometer would read the incorrect mph, but inconstantly. sometimes it would be 5 mph off, other times 30 mph off. The speedometer would also not drop down to zero at a dead stop, or until i left the car off for longer than 15 minutes. A few good local techs i knew were pretty stumped.

I wasn't directly in contact with the technicians who fixed the issue nor did i pay for the repair (done through a small dealership), but supposedly they replaced the speedometer gauge (specifically and only) and re-calibrated it. Something along the lines of either receiving the wrong frequency or not reading the frequency correctly. I wish i could have seen the receipts or talked to the techs, but hopefully that will help anyone else who has to deal with this issue... I imagine replacing the whole gauge cluster would have worked too (more expense/labor), but there is definitely evidence of someone working with the cluster (dust/fingerprint on the inside lens).

Either way, i can confirm the speedometer is not an issue any longer.
Good luck and happy truckin'
 

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Hi My Father Has An 01 Toyota Tundra. He Is Having Difficulty With His Speedometer An Odometer Working. He Has No Abs Cable It's Electronic. He Has Tried Everything. Fuse's, Taking Apart Cleaning Sensors. Wiring, Changed The Whole Cluster. Resetting The Speedometer. Disconnected The Battery Waited 5 Min Then Connected Again. Still Nothing...Can Anyone Please Head Me In The Right Direction. My Father's Is Very Frustrated An Needs To Get This Truck To Pass Inspection
 
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