Hi Guys,
Is there an easy/safe way to disable the lock up converter on a TR Magna???.
I've read about disconnecting the temp sensor etc etc...but I don't think this will work on 2nd gen's. I think it only stops you using the power mode.
It drops in & out while cruising on 100kph.
I've had everything checked out Ok (ie TPS etc) & the dealer said it's probably the solenoid.
I don't want to spend $300 - $400 on a tranny that has done 250,000k's, rather wait & put the money into a changeover when required.
Thanks,
Lachlan.

On the wheel arch on the drivers side under the air cleaner are a series of connectors for the auto trans. There is one connector with 4 wires going to it. The wire colours should be red, blue, orange and yellow.

The red wire controls the lockup clutch control solenoid. Cut that and no more lockup clutch.

have you checked your TPS module
mine was doing the same thing and it turned out to be the TPS wiring conector.

Hi guys,
The dealer said the TPS was working fine.
I cleaned all of the connection contacts in the engine after I bought the car a month ago as they all had buildup on them.
I'll try the red wire trick & see what happens.
Thanks,
Lachlan.

What is the advantage of locking up the convertor?

Are we saying that the torque convertor changes the actual revs that the car is doing at 100kph i.e more or less revs at 100kph.

cheers

This is taken from howstuffworks.com

"In addition to the very important job of allowing your car come to a complete stop without stalling the engine, the torque converter actually gives your car more torque when you accelerate out of a stop. Modern torque converters can multiply the torque of the engine by two to three times. This effect only happens when the engine is turning much faster than the transmission.

At higher speeds, the transmission catches up to the engine, eventually moving at almost the same speed. Ideally, though, the transmission would move at exactly the same speed as the engine, because this difference in speed wastes power. This is part of the reason why cars with automatic transmissions get worse gas mileage than cars with manual transmissions.

To counter this effect, some cars have a torque converter with a lockup clutch. When the two halves of the torque converter get up to speed, this clutch locks them together, eliminating the slippage and improving efficiency. "

So at cruising speed with a working lock up clutch the engine is revving slower than it would be if the lock up clutch was not working.

Hi gst74,
Thanks for the tip.
It took about 10 minutes to do & has no side effects.
Thanks,
Lachlan.