Overdrive not working..help

[SupraRider]

Hi Peeps,

 

I hope you can help..I own a 93 J-Spec N/A auto. the overdrive button has been working fine when I pressed on the button, the car dropped from 4000RPM to 3000RPM when I'm accelerating at 70mph. recently, I noticed the car is not responding to it, I'm always driving at 4000RPM at 70mph on the motorway..

 

 

Can someone tell me what's wrong?

[Mike_Mac]

Does the dash light still come on when you press the button?

 

If it doesn't then the two wires from the O/D button to the loom could have been damaged somewhere along the way - happened to mine a few months back, as the wires had come free of its securing clips, got caught on the lever's mechanisms and then seperated.

 

New button assy's about £30 from Mr T.

[carl0s]

Have you left MANU on ?

[SupraRider]

hi guys,

thanks for writing, apologies for not getting back sooner...the dash light goes off when I press on the O/D button,works as normal,the car just doesn't seemed to respond fast enough, when it does, it goes great for a while, then the car start to get into high revs again,this happens even when the O/D button is pressed.

 

As for the MANU button, my MANU button isn't working.

[Mike_Mac]

As for the MANU button, my MANU button isn't working.

 

The Manu, O/D, Trac etc systems are all interconnected at different points and share many of the same feeds, so not having a working Manu button could be screwing up the O/D further along the line, as they all send inputs to the same place.

 

I'd check the wiring/connections behind your Manu button just to make sure it's nothing simple and dig further if necessary until I get it working properly.

 

If the problem still occurs with a working Manu button then it's something a bit more involved unfortunately.

 

Let us know how you get on.

[SupraRider]

The Manu, O/D, Trac etc systems are all interconnected at different points and share many of the same feeds, so not having a working Manu button could be screwing up the O/D further along the line, as they all send inputs to the same place.

 

I'd check the wiring/connections behind your Manu button just to make sure it's nothing simple and dig further if necessary until I get it working properly.

 

If the problem still occurs with a working Manu button then it's something a bit more involved unfortunately.

 

Let us know how you get on.

Hi Mike,

Thanks for that, do you know where I could get that checked? I live up here in Scotland, would you recommend going to a toyota dealership?bet they'll rip me off since they don't know what they're talking about... any ideas please?

[Mike_Mac]

Difficult to say. I'd personally start stripping things out and looking for bad/loose connections myself first, before I took it anywhere, but it depends on your mechanical knowledge. There's plenty of wiring diagrams out on t'net to help you also.

 

I don't know if there's any Supra specialists up near L & B either, unless you count Envy in Northumberland. Maybe someone else who's further North than I am now could help?

 

If not then i'd see if there's any decent auto-electricians in your area and go from there.

 

Mr T may charge a lot, but they should be able to sort it out as a last resort.

 

Hope you get it sorted.

[SupraRider]

Difficult to say. I'd personally start stripping things out and looking for bad/loose connections myself first, before I took it anywhere, but it depends on your mechanical knowledge. There's plenty of wiring diagrams out on t'net to help you also.

 

I don't know if there's any Supra specialists up near L & B either, unless you count Envy in Northumberland. Maybe someone else who's further North than I am now could help?

 

If not then i'd see if there's any decent auto-electricians in your area and go from there.

 

Mr T may charge a lot, but they should be able to sort it out as a last resort.

 

Hope you get it sorted.

sure, I'll see if I can find an auto electrician first before going to Mr. T. sorry I'm not at expert in mechanical stuff about cars at all.