okay, i swapped in a sr5 cluster from a 94 4x4 4cyl into my 92 2wd 4cyl tonight. prev owner of the part said it worked perfect when pulled. problem im having is, when i turn the key to on (even before i start) the tach reads 2500. and it doesnt move when i start it or rev it. i havent driven it yet, but what does this seem like it is? wiring issue on my truck? bad tach in cluster? maybe my truck just needs to learn it? i dont know, but i wanna make it work. thanks.

 

just test drove it. speedo and odometers work. water temp works. gas gauge doesnt but i have a bad sending unit. volts works. oil press gauge hasnt been swapped, so its unplugged. anybody have any ideas?

 

hmmm, im having the same problem but im going to check my ground wire today. maybe check your ground wire but im not for sure thoo..

 

If you want some guesses, I'm going to guess there is a wiring/ECU difference between the models/years or the sender is different. I'd start by looking at the EWDs for both your 92 and the 94 and see if there is a difference and check to see if there is a different part number for the tach sender. Its a good bet Toyota changed something.

 

yeah, its still doing the same deal. where would the grounds for it be? and by ewd, what do you mean? im vaughly new to toyota ownership. only had it a few weeks. ill look up the tach sender too.

 

another thought, would getting just the tach from the cluster of a 92 work?

 

EWD=electrical wiring diagram

 

ah. ive got a chiltons/haynes book, ill look in there. if i have to rerun a few wires, ill do that.

 

I had a similar problem; i bought one off ebay for the steal of like 22.00. only my truck wouldn't even start with that cluster plugged in. mine would also read some number as soon as the key was on. i let a girl at school who is an electrical engineering major look at it and it had fried a capacitor and some resistors. guess i got what i payed for.

 

Just because something plugs in doesn't mean its wired right, I'm told Toyota had as many as 4 different ECUs in one model year of the 5VZFE (2000 IIRC)

 

You could always run a wire from the back of your cluster to the negative terminal on the coil. Then you know what you are seeing is accurate.

Rob

 

In 1992 sometime, they did change to an electric speedometer (not sure if that's going to make a difference).

http://www.brian894x4.com/Gaugecluster.html

 

wiring pinout is the same on all third gen trucks. i suspected this with my problems, but it is the same even after changing to an electronic speedo

 

nope. electric speedo. i guess its just a burned out tach. ill try another at a junkyard, see if i works. or run a test wire. thanks people.