I swapped engines in my 89 pickup, has the 22re. (cam broke in half in old engine, 190k +) The oil pressure guage was working fine before the swap, now it's not. I forgot to change the sender, old engine was a switch for an idiot light. Changed the sender, still no workee. I grounded out the wire to the sender and gauge fully deflected. So I bought a new sender. Installed the new sender and the gauge still doesn't work. I traced the wiring all the way back to the gauge making sure it was in the same place in the connectors and then pulled the guage cluster out, or combination meter, as Toyota calls it. Check the printed circuits on the cluster, voltage and ground to guage at cluster, I hooked up jumpers wires directly to the guage on the cluster from the battery and the gauge deflected fully. I then hooked up jumpers directly to the guage from the battery and the sending unit and nothing happens at all with the truck running. I know I have oil pressure, no question there. I have checked resistance on the sender with regulated air hooked up to the pressure sender, both old and new sender act the same, I dont' think it's the sender. Any ideas?
Seems like the gauge is bad to me, but it sure is odd that it would have went bad during an engine swap. Anybody have this problem before or has anyone had an oil pressure gauge fail on them? It looks like I can probably get the gauge out of the cluster, but I haven't checked to see if Toyota sells the gauge separately from the cluster. Otherwise I'll probably go with an aftermarket gauge. Thanks for the time.
