Thread: Torque converter when cold.

Its normal operation

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Originally Posted by 697-Nodad

Just wondering why the converter wont lock up untill everything is up to temp?
(TD5)

It's pretty annoying - is there a way to alter this?

Had a d1 V8 auto and can't remember it doing it.

Cheers

Heres one for ya, If I leave my house in the morning on my way to work, I oull it out of the shed @ about 20degreees coolant temp, I drive down the road, stop at the lights, round the corner, round a roundabout, and onto the expressway on ramp, probably 2 kays total distance, I get lockup at about 70 degrees coolant temp and anything over 80 kays, as I merge onto the express way.

if I leave work in the morning after nightshift, coolant temp at similar temp, MAYBE slightly less, I can drive down the driveway at work which is about 2 kays in itself (@ 80kph or thereabouts) drop onto the highway, and do almost another 3 kays (estimate) @ 100Kph BEFORE I get lockup, at this point the engine is about 87 degrees coolant temp...


its weird, and annoying, butI do understand that the ECM looks at Trans Temp, Engine Temp, Load and Ground Speed before selecting lockup in top gear.