2001 excursion 4r100
#1
2001 excursion 4r100
2001 EX, 5.4L, 4R100 TX, 282,K MILES
My Excursion recently did not shift into 3rd gear after entering a freeway. I thought the engine sounded strange and I glanced down at the tack and the engine was turning at about 3K RPMs and the TX was still in 2nd gear. I held it there for a few seconds and it wouldn't shift. I let up on the gas a little and it still wouldn't shift. I then ran it up to 4k RPMs and let up on the gas and it shifted into 3rd gear and then into OD. I was over 600 miles from home, getting ready to get onto the PA turnpike, and since it was running okay, I drove it as far as I could before hazarding a stop. I didn't want to take a chance that the next time I stopped it wouldn't shift into 3rd gear. Finally, when my bladder dictated, I stopped and checked the TX fluid level. The level was fine and the fluid was bright red. (I drain the pan every 30K miles and refill the TX with approx. 7 qts. of fluid - I realize that 7 qts. is not a complete drain.)
For the next 600 miles the TX shifted flawlessly. The torque converter locked up fine with absolutely no slippage. I am home now, but I don't trust the transmission. I frequently take trips of greater than 1K miles, and I don't want to have a transmission problem hundreds of miles from home, and far from the nearest service.
Does anyone have any idea what might cause such a failure? Any suggestions would be greatly appreciated. Thanks!
My Excursion recently did not shift into 3rd gear after entering a freeway. I thought the engine sounded strange and I glanced down at the tack and the engine was turning at about 3K RPMs and the TX was still in 2nd gear. I held it there for a few seconds and it wouldn't shift. I let up on the gas a little and it still wouldn't shift. I then ran it up to 4k RPMs and let up on the gas and it shifted into 3rd gear and then into OD. I was over 600 miles from home, getting ready to get onto the PA turnpike, and since it was running okay, I drove it as far as I could before hazarding a stop. I didn't want to take a chance that the next time I stopped it wouldn't shift into 3rd gear. Finally, when my bladder dictated, I stopped and checked the TX fluid level. The level was fine and the fluid was bright red. (I drain the pan every 30K miles and refill the TX with approx. 7 qts. of fluid - I realize that 7 qts. is not a complete drain.)
For the next 600 miles the TX shifted flawlessly. The torque converter locked up fine with absolutely no slippage. I am home now, but I don't trust the transmission. I frequently take trips of greater than 1K miles, and I don't want to have a transmission problem hundreds of miles from home, and far from the nearest service.
Does anyone have any idea what might cause such a failure? Any suggestions would be greatly appreciated. Thanks!
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