P0746

[Micheal Tomac]

Green 2002 with a stock trans threw a P0746 at the very end of the 1/4 mile when I let off. Ran a [email protected] mph. Need to put some smaller/lighter wheels & tires on it and see if can milk any more out of this stock trans with 176k miles. It's a challenge tuning for sure, but that was the first limp.

 

[Mike L.]

Green 2002 with a stock trans threw a P0746 at the very end of the 1/4 mile when I let off. Ran a [email protected] mph. Need to put some smaller/lighter wheels & tires on it and see if can milk any more out of this stock trans with 176k miles. It's a challenge tuning for sure, but that was the first limp.

Micheal
You probably have clutch damage as that code indicates that an applying clutch came on too slow under power. Turbine or outpu speed sensors can cause the same thing. Check transfer case for loose tone wheel. The the miles on this truck and it being stock; maybe all of the above.

 

[Micheal Tomac]

At first I didn't realize it limped but when I was slowing down after the 1/4 mile mark I noticed it downshifted into 4th and the check engine light came on. Then it stayed in 3rd or 4th after I stopped at the ET shack.

This trans had a new rear case 1/2 put on a few thousand miles ago.

 

[Micheal Tomac]

Ran a 14.16, 14.18, 14.19 @ 95mph yesterday in 4th gear. Truck has 179000 miles on it now, hasn't thrown another code.

 

[Mike L.]

Ran a 14.16, 14.18, 14.19 @ 95mph yesterday in 4th gear. Truck has 179000 miles on it now, hasn't thrown another code.

Cause you kept it out of 5th.

 

[Micheal Tomac]

ran this past weekend with a best of 13.5@99 mph

 

[LWATSON]

ran this past weekend with a best of 13.5@99 mph

Thats moving for a stock 5 speed. My 03 would run around 90 mph in the 1/4 with a Banks 6-gun and limped at that power level.

 

[Micheal Tomac]

It's only a 4 speed Allison at the track.

 

[Redbowties88]

thats the same code mine used to throw when it limped...i wuld get the occasional p0735 but thats was only like on the highway if it was already in gear... WOT runs it just about always threw the p0746..

drove it for almost 2 years like that...always ended up fine long as i didnt go about about 1/3 throttle in 5th...still on my 2500 pulse tune