Ever since I removed my Spoon Vtec contoller from my dash to sell it, my speedo has been working very sporadically. It'll work for the first mile or so after I start the car, then it'll tweak out then die.

I've swapped in different VSS's and still nothing, so it's definately a loose wire or something, but I've checked all the wires on the back of the cluster and they were fine, and I didn't go near the ECU when I took the Vtec controller out.

Any suggestions on what to try next?

 

i'm having kinda the same problem with my 4runner. i took out the speed sensor to see if it was just the connections, but no, the sensor is screwed. i did check other possible problems and one is that the gear on your trans that turns the sensor may have come loose. just take your sensor out and see if the gear moves or not. supposedly they are held on with snap rings that sometimes give out. by the way, you don't know of anyone that sells them for cheaper than $227(toyota price), do you?

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by eric.ws.anderson &raquo;</TD></TR><TR><TD CLASS="quote">I had the 'jumpy speedo' issue for months and months, referencing many different threads on a solution.

This is the process I went through

1) making sure no fuses were blown
fuses were good.

2) cleaning VSS plug with q-tip
contacts were clean
Note: my friend (who had the same issue) had a new plug put on which solved his problem..

3) rebuilding VSS
-take VSS off tranny
-take screws off
-pull sensor out
-clean out black crap
-fill with equal amount of white lithium grease (motomaster makes it)
Same jumpy issue.

4) borrowing VSS off a friend and then returning it.
Same jumpy issue.

5) checking for cracked soldering points on the back of the cluster.
Everything looked fine.

6) Took the cluster apart and found that the needle was struggling to move.

Finally, replacing the entire cluster
SOLVED MY PROBLEM.
I believe the speedo cup itself was the issue.

To determine whether this will solve the problem or not, take the cluster out and move the speedo needle to about 100
if it 'springs' back smoothly to 0, your cluster is OK.
If not, the cluster is BAD or you have glow gauges that are restricting it or something.

Good luck! </TD></TR></TABLE>

hahaha man i did the same exact thing, in the same order and came to the same conclusion. definetely, doing that speedo needle trick really helps eliminate alot of the guess and check.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by eric.ws.anderson &raquo;</TD></TR><TR><TD CLASS="quote">I had the 'jumpy speedo' issue for months and months, referencing many different threads on a solution.

This is the process I went through

1) making sure no fuses were blown
fuses were good.

2) cleaning VSS plug with q-tip
contacts were clean
Note: my friend (who had the same issue) had a new plug put on which solved his problem..

3) rebuilding VSS
-take VSS off tranny
-take screws off
-pull sensor out
-clean out black crap
-fill with equal amount of white lithium grease (motomaster makes it)
Same jumpy issue.

4) borrowing VSS off a friend and then returning it.
Same jumpy issue.

5) checking for cracked soldering points on the back of the cluster.
Everything looked fine.

6) Took the cluster apart and found that the needle was struggling to move.

Finally, replacing the entire cluster
SOLVED MY PROBLEM.
I believe the speedo cup itself was the issue.

To determine whether this will solve the problem or not, take the cluster out and move the speedo needle to about 100
if it 'springs' back smoothly to 0, your cluster is OK.
If not, the cluster is BAD or you have glow gauges that are restricting it or something.

Good luck! </TD></TR></TABLE>
Were you actually throwing a code (code 17- VSS)? Because I do after the needle dies finally

 

I've tried 3 different VSS's, and they all do the same thing

 

I had the same problem and it was a bad cluster too.

 

im having the same problem right now, tried clusters, VSS's, i think its somewhere in teh wiring, checked the speedo ring in the tranny and its fine. anyone have any ideas? im stumped