Attention: TDR Forum Junkies Coming home from work Friday evening 3/14/14, after a 10 mile run down the interstate, I slowed to a stop at the end of the exit ramp. As the transmission performed its normal downshifting as I was coming to a stop, it made one more unusual “bump” which felt like I had shifted the transmission into neutral from drive. I let off of the brake to go, but the truck did not move forward until I pressed the accelerator. The engine revved up way more than normal, but the truck left the stop sign as if I were slipping the clutch in high gear. Turns out, in watching for a shift as I got up to 45mph, it only shifted once, from 3rd to 4th gear. Once I got to about 25mph it pulled normally, which would be when it usually goes into 3rd when driving in normal traffic situations. I checked the trans fluid temp on my Edge Insight CTS and it was normal, about 167 degrees.
When I slowed down to stop before turning up the road to my house, it downshifted the exact same way. I thought I would pull the shifter down to ‘1’ to see if it made a change, but it remained in 3rd. There was no difference when I moved the shift lever into ‘2’ either.
After pulling into my driveway, I put the shifter in ‘N’ and proceeded to check the transmission fluid level, which showed to be at the top of the hatch marks on the dipstick. I know when I serviced the transmission on 2/22/14, I had replaced both the governor solenoid (Borg Warner Heavy Duty one) and the pressure transducer (Mopar 68164850AA) as a preventive measure, since the truck had 95K miles on it. What could it be?
I decided to take another test drive and see if I could get more information from the symptoms presented. When I started the truck, backed out of the driveway, then put it in ‘D’, this time it went into 1st gear just as normal, and shifted normally until I stopped at the end of my street. Just before I stopped, it performed that added “bump” after it downshifted to 1st, and seemed as if it was in 3rd again. I turned around and went back home.
Saturday morning, I drained the fluid through the B&M Drain Plug Kit (previously installed) into a new 15qt drain pan so I could save it, and removed the pan. The local Mopar parts house (Chrysler-Jeep-Ram dealer) was open, so I commandeered the wife’s car, and went to get another pressure transducer.
I installed the new transducer, plugged it in carefully, and re-checked the tightness of wiring to the governor solenoid. After installing the pan, I screened the fluid through an old cotton t-shirt, then poured it back into the transmission.
Starting the engine and letting it idle in neutral for a few minutes, I checked for any leaks, and gathered up my tools. I pulled the dipstick, and it took 6 additional ounces of fluid to bring the level just into the hatch marks when cold. Moving the shifter to go through the gears from Reverse to Drive, 2 and 1, it felt normal while sitting still. Next was the test drive.
Driving down the road, the transmission shifted like as if this problem never occurred, and slowing down to a stop at the stop sign, it downshifted as it was supposed to. It did not give me the “bump” and the release feel. Letting off of the brake, the truck crept forward as usual, which indicated it had stayed in first gear. Hooray!
Apparently there is a problem with the new 68164850AA pressure transducers made in China! The dealer which I had originally purchased it from told me that he has had a bunch of these new transducers to fail. The old number 56028196AD has not had the failure rate that this new number has, but they are not available locally anymore. If you need one, and can find the old number, get it!!!
Anyone else have the same problem?
When I slowed down to stop before turning up the road to my house, it downshifted the exact same way. I thought I would pull the shifter down to ‘1’ to see if it made a change, but it remained in 3rd. There was no difference when I moved the shift lever into ‘2’ either.
After pulling into my driveway, I put the shifter in ‘N’ and proceeded to check the transmission fluid level, which showed to be at the top of the hatch marks on the dipstick. I know when I serviced the transmission on 2/22/14, I had replaced both the governor solenoid (Borg Warner Heavy Duty one) and the pressure transducer (Mopar 68164850AA) as a preventive measure, since the truck had 95K miles on it. What could it be?
I decided to take another test drive and see if I could get more information from the symptoms presented. When I started the truck, backed out of the driveway, then put it in ‘D’, this time it went into 1st gear just as normal, and shifted normally until I stopped at the end of my street. Just before I stopped, it performed that added “bump” after it downshifted to 1st, and seemed as if it was in 3rd again. I turned around and went back home.
Saturday morning, I drained the fluid through the B&M Drain Plug Kit (previously installed) into a new 15qt drain pan so I could save it, and removed the pan. The local Mopar parts house (Chrysler-Jeep-Ram dealer) was open, so I commandeered the wife’s car, and went to get another pressure transducer.
I installed the new transducer, plugged it in carefully, and re-checked the tightness of wiring to the governor solenoid. After installing the pan, I screened the fluid through an old cotton t-shirt, then poured it back into the transmission.
Starting the engine and letting it idle in neutral for a few minutes, I checked for any leaks, and gathered up my tools. I pulled the dipstick, and it took 6 additional ounces of fluid to bring the level just into the hatch marks when cold. Moving the shifter to go through the gears from Reverse to Drive, 2 and 1, it felt normal while sitting still. Next was the test drive.
Driving down the road, the transmission shifted like as if this problem never occurred, and slowing down to a stop at the stop sign, it downshifted as it was supposed to. It did not give me the “bump” and the release feel. Letting off of the brake, the truck crept forward as usual, which indicated it had stayed in first gear. Hooray!
Apparently there is a problem with the new 68164850AA pressure transducers made in China! The dealer which I had originally purchased it from told me that he has had a bunch of these new transducers to fail. The old number 56028196AD has not had the failure rate that this new number has, but they are not available locally anymore. If you need one, and can find the old number, get it!!!
Anyone else have the same problem?
