tc question, lock up
Thread Starter
Staging Lane
Joined: May 2004
Posts: 78
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tc question, lock up if ur tc is 3500 and ur doing 80 in 4th at 2700 rpms is it locked??? im afraid of losing gas mileage on the freeway, where most of my driving is. i heard that in 4th its always locked, is that true???
Launching!
Joined: Jun 2004
Posts: 269
Likes: 0
From: Mooresville, NC
Originally Posted by deetsnai
if ur tc is 3500 and ur doing 80 in 4th at 2700 rpms is it locked??? im afraid of losing gas mileage on the freeway, where most of my driving is. i heard that in 4th its always locked, is that true???
Any easier way is to drive in 4th, keep steady on the gas, lightly accelerating and with the other foot, tap on the brake pedal enough to turn the brake lights on. If your RPMs flare up 300+ RPM, then it was locked. If they don't change, then it may not be locking up.
If you have Datamaster or any other data logging software, you can monitor TCC Slip speed.
Launching!
Joined: Jun 2004
Posts: 269
Likes: 0
From: Mooresville, NC
TCC Slip as read with a scantool/data device will vary w/ engine load when unlocked. At light cruise, it may only show 200 RPM under moderate load, it can show 600+ RPM.
0 RPM is locked, for all converters.
0 RPM is locked, for all converters.
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I run about 2500 at 80MPH, 3.23 gears, locked up.
Logging TCC slip on a road trip last week, it slips
a lot more when hot. I have a trans cooler and a
"160" 'stat and low-turnon fan settings but the ECT
and trans temps were both pushing 200F with the
A/C on, in Georgia.
Logging TCC slip on a road trip last week, it slips
a lot more when hot. I have a trans cooler and a
"160" 'stat and low-turnon fan settings but the ECT
and trans temps were both pushing 200F with the
A/C on, in Georgia.
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