Mechanics

93 COROLLA, SPEEDOMETER NOT WORKING CORRECTLY

1993 All Other Makes All Other Models

Hello experts! I have a 93' Corolla which the speedometer doesn't do anything till I hit about 40 mph at which then it will shoot to needle to the 60mph markings. I changed the cluster and the results were the same. The odometer and tripometer work perfectly. THanks in advance for the help!
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Lashark
December 23, 2006.




A buddy of mine has the " Snap-On" diagnositc unit. Normally when I drive, there is no reaction from the Speedometer until I hit about 40mph where then it jumps to 60 in reading. The Snap-on diagnositc unit showed differently. As I accelerated from 0 on up, the speed reading where correct.

So, this is why I have elimated the Speed Sensor, the ECU and the wiring between the Speed Sensor and the ECU. Last causes left are the cluster and the wiring from the cluster. I did change the cluster, possible the replacement is bad too, and saw simliar results. This leaves me with the wiring from the cluster to the ECU. Boy I hope it is easy as it sounds. LOL

Tiny
Lashark
Jan 9, 2007.
Since I already replaced the cluster with a used one I purchased on EBAY I almost ruled this out as the problem. Only thing that made me second guess my assumption was the speedometer on the replacement cluster was not working the same way as the original cluster. It was somewhat similar but still erratic reading. This was enough that I ordered a third cluster. Well, this did the trick and all is working now. Glad I did it because the wiring going into some blue box in the dash looked chaotic.

Now with a different odometer reading, I guess I have to document the change with the different mileage reading.

Thanks for all the help gang!

Tiny
Lashark
Jan 13, 2007.
Glad, you got it going again.
Good Luck!

Tiny
Rasmataz
Jan 14, 2007.
[quote=" lashark" ]Since I already replaced the cluster with a used one I purchased on EBAY I almost ruled this out as the problem. Only thing that made me second guess my assumption was the speedometer on the replacement cluster was not working the same way as the original cluster. It was somewhat similar but still erratic reading. This was enough that I ordered a third cluster. Well, this did the trick and all is working now. Glad I did it because the wiring going into some blue box in the dash looked chaotic.

Now with a different odometer reading, I guess I have to document the change with the different mileage reading.

Don't forget to donate-maybe next time its nothing there to read. Its free99 who won't take advantage. It takes money to run this site.

Tiny
Rasmataz
Jan 14, 2007.
Already donated via paypal but is not the same email link to this site. This site is very informative!
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Tiny
Lashark
Jan 14, 2007.

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