Hilux Electrical Gearbox Problem

[Rich_28]

I have just bought a 1994 Toyota Hilux Surf 3 Litre diesel. It has two problems, when I select 2nd gear position it blows the fuse for the overdrive, heater and dash gauges, but is ok low drive and reverse.

Also on the road, overdrive or 4th gear doesn't come in, all the button does is turn the light on and off on the dashboard. It is running in 3rd gear at about 58 miles an hour at 3000 rpm.

Any ideas and relay? ECU? Overdrive Solenoid? Please help. Desperate.

Cheers,

Richard

[hilux pete]

I have just bought a 1994 Toyota Hilux Surf 3 Litre diesel. It has two problems, when I select 2nd gear position it blows the fuse for the overdrive, heater and dash gauges, but is ok low drive and reverse.

Also on the road, overdrive or 4th gear doesn't come in, all the button does is turn the light on and off on the dashboard. It is running in 3rd gear at about 58 miles an hour at 3000 rpm.

Any ideas and relay? ECU? Overdrive Solenoid? Please help. Desperate.

Cheers,

Richard

My last 4wd was a 94 auto td 3.0 1kzte import surf from japan. At about 130k it would no longer go in to over drive. I was told by a trans specialist that it was water damage to the internals, an a few others looked at it and had no idea.

Out of desperation I went through all the plugs on the wiring harness and on the trans and found 1 of the electrical conecters on the side of the trans had a coroded pin, that was broken away . I ended up drilling a small hole through the plug and solderd two new wires to the ones in the trans , after removing the pan and solderd them to the wires on the outside , doing away withe plug. I used a hi temp silicone to insulate the joins inside and to seal the new hole.

This fixed the problem and it was engaging over drive again like new. :D

I belive the corosion occured because there was no sign of any water proofing grease or anti corosive protection of any kind in the electrical plugs, and from washing the drive train with pressure cleaners and cleaning chemicals.

This info may not solve your problems but i hope it gives you some ideas where to look . GOOD LUCK.