PDH
Member
- Joined
- July 22, 2007
- Messages
- 32
- Reaction score
- 0
- City, State
- Alaska
- Year, Model & Trim Level
- '94 XLT & 2002 XLT
I've got a 94 Explorer with the A4LD transmission. The TCC lockup solenoid failed on my transmission, so I replaced it with a solenoid kit from transmissionpartsusa.com that included both the 3-4 shift and TCC lockup solenoids. The new solenoids were the one hole design (1st design), whereas the original solenoids I replaced were the two hole design (2nd, upgraded design). Since I had to drop the valve body to replace the solenoids, I also purchased a TransGo shift kit and rebuilt the valve body with the mods recommended by Glacier991 in his A4LD valve body rebuild threads.
I also rebuilt the 4.0L OHV engine.
Now that the engine is running great I have a transmission problem. The transmission shifts through all gears just fine from initial acceleration. The problem occurs with the transmission in overdrive (4th) with the TCC locked up. The shudder doesn't occur until the TCC locks up, or at least tries to. In that situation, cruising around 45-55 mph, if I accelerate with the TCC locked, the transmission shudders / chugs and continues chugging as the vehicle loses speed.
In the TransGo shift kit instructions, there is a sheet included that's titled "A4LD Tips". It would have been nice to have had this sheet before I ordered the new solenoids, but I didn't receive the TransGo shift kit & instructions until I ordered and received all of my valve body rebuild parts, including the two new solenoids. So now that this chugging problem has manifested itself, I have read that TransGo fact sheet and low and behold there is a section titled "Lockup chugging down to low speed: This kit corrects several causes of chugging, but will not correct chugging caused by worn out solenoid. How to fix it: If chugging occurs to low speed, disconnect wires to trans. If chugging still occurs replace solenoid with a NEW 2nd design solenoid E5TZ-7F037-A. Installing another used 1st design solenoid may not fix it."
So in accordance with the TransGo instructions, I disconnected the wire harness to the two solenoids on the transmission and took it for a drive - the transmission doesn't shift into 4th gear (overdrive), nor does the TCC lockup. Which is what I expected it to do because the wires were disconnected to both of those two solenoids. Here's what has me confused: How would disconnecting the wires to the solenoids (per the TransGo instructions) help to confirm whether or not the TCC lockup solenoid is bad if the power has been disconnected to the solenoid??? Are the TransGo instructions miss-worded and in error? Anybody else able to follow and understand these instructions on the Transgo A4LD Tips sheet?
I don't see how disconnecting the wire harness to both of the transmission solenoids is going to help troubleshoot a defective TCC lockup solenoid. No way will the solenoids actuate with the wires disconnected!!! With the wires disconnected, there was no chugging at all. But the transmission never shifts into 4th gear (overdrive) and the TCC doesn't lock up! And I didn't have any chugging in the first place until the TCC was locked up while in overdrive (4th gear). So what gives?
Help... anyone???
I think I'm going to order the 2nd design TCC lockup solenoid from transmissionpartsusa.com for $45.00. I'll also order the 56995A A4LD Torque converter clutch anti-shudder spring, a new pan & reverse servo & valve body gaskets, and see if the 2nd design solenoid eliminates this chugging.
Anyone else experienced this problem when installing a replacement '1st design' one-hole TCC lockup solenoid in an A4LD that originally had the '2nd design' two-hole solenoid? I'm not positive this will solve the chugging problem but it's my best guess. I just wish I better understood the Transgo instructions before I parted with my money. If anyone could help to clarify those quoted instructions, I'd be grateful.
Thanks,
I also rebuilt the 4.0L OHV engine.
Now that the engine is running great I have a transmission problem. The transmission shifts through all gears just fine from initial acceleration. The problem occurs with the transmission in overdrive (4th) with the TCC locked up. The shudder doesn't occur until the TCC locks up, or at least tries to. In that situation, cruising around 45-55 mph, if I accelerate with the TCC locked, the transmission shudders / chugs and continues chugging as the vehicle loses speed.
In the TransGo shift kit instructions, there is a sheet included that's titled "A4LD Tips". It would have been nice to have had this sheet before I ordered the new solenoids, but I didn't receive the TransGo shift kit & instructions until I ordered and received all of my valve body rebuild parts, including the two new solenoids. So now that this chugging problem has manifested itself, I have read that TransGo fact sheet and low and behold there is a section titled "Lockup chugging down to low speed: This kit corrects several causes of chugging, but will not correct chugging caused by worn out solenoid. How to fix it: If chugging occurs to low speed, disconnect wires to trans. If chugging still occurs replace solenoid with a NEW 2nd design solenoid E5TZ-7F037-A. Installing another used 1st design solenoid may not fix it."
So in accordance with the TransGo instructions, I disconnected the wire harness to the two solenoids on the transmission and took it for a drive - the transmission doesn't shift into 4th gear (overdrive), nor does the TCC lockup. Which is what I expected it to do because the wires were disconnected to both of those two solenoids. Here's what has me confused: How would disconnecting the wires to the solenoids (per the TransGo instructions) help to confirm whether or not the TCC lockup solenoid is bad if the power has been disconnected to the solenoid??? Are the TransGo instructions miss-worded and in error? Anybody else able to follow and understand these instructions on the Transgo A4LD Tips sheet?
I don't see how disconnecting the wire harness to both of the transmission solenoids is going to help troubleshoot a defective TCC lockup solenoid. No way will the solenoids actuate with the wires disconnected!!! With the wires disconnected, there was no chugging at all. But the transmission never shifts into 4th gear (overdrive) and the TCC doesn't lock up! And I didn't have any chugging in the first place until the TCC was locked up while in overdrive (4th gear). So what gives?
Help... anyone???
I think I'm going to order the 2nd design TCC lockup solenoid from transmissionpartsusa.com for $45.00. I'll also order the 56995A A4LD Torque converter clutch anti-shudder spring, a new pan & reverse servo & valve body gaskets, and see if the 2nd design solenoid eliminates this chugging.
Anyone else experienced this problem when installing a replacement '1st design' one-hole TCC lockup solenoid in an A4LD that originally had the '2nd design' two-hole solenoid? I'm not positive this will solve the chugging problem but it's my best guess. I just wish I better understood the Transgo instructions before I parted with my money. If anyone could help to clarify those quoted instructions, I'd be grateful.
Thanks,