Torque Converter lockup delayed?

[JIMSVX]

Originally Posted by oab_au

Feel free Darrell,
Yes Jim, that happens, a lot of people took it out of circuit when it blocked. and just fitted the air cooler. What they should have done is reverse flush the cooler to remove the debri, and fit a filter to prevent it from happening again.When the extra air cooler is installed before the water cooler, it then will remove the high-end heat, then the water cooler can stablise the temp to normal operating temp, so the trans will operate normally.

Harvey.

Thanks Harvy & Darrell. I didn't mean to hyjack this thread but is sounded like Steve is having the same issue I have. But before I tear into it and reroute my oil lines I would like to be sure this is my problem.

When I read about this 150 deg. warm-up issue I wondered if my 4EAT temperature sensor could be my problem. I have Legacys and Imprezas that have the lower 50 degree warm-up temperature and I assumed the SVX was the same. Now I find out that the SVX switching point is 150 deg. I want to tap into the sensor lines to the TCU and monitor it with a digital voltmeter. I should be able to determine if it is changing as the transmission warms up.

Now, does anyone know the calibration on that sensor? If I had that I could monitor the temperature while driving to determine if the tansmission oil is warming up to a high enough temperature to let the TC engage.

Thanks guys - Jim