Hi, this is my first time posting on this board so I hope I get everything right as far as explaing a problem I have on my car.
First of all it is a 1997 Eclipse GS Spyder with the 2.4 L 4G64 engine, non-turbo.
The transmission is the F4A23-2-UPQ5 transmission. It's a 4-speed automatic transmission.
I have the P1750 code and I know that is the transmission solenoid assemby code.
My transmission is shifting very erratic. When I take off at a light it will not start off in 1st gear so I don't have much torque to take off so it is very slow taking off from an incline. And when it shifts it shifts hard. Cruising at 70 mph is at about 4,000 RPM.
I was going to drain the transmission fluid and take off the pan and filter and remove the valve body so I can test the contacts on the solenoids but I think I will just test to see what specific transmission trouble code it gives me so I don't have to do that first.
I know there are 4 solenoids. The torque converter clutch solenoid coil, the pressure contol solenoid valve coil, and the shift control solenoid valves A and B coil.
My service manual tells me that the ohm spec for the torque converter clutch solenoid coil is approx. 13 ohms
For the pressure control solenoid valve coil it's approx. 3 ohms.
And for the shift control solenoid valve A and B coil it's approx. 22 ohms.
All at 68 degrees Farenheit.
I am thinking it is one of the two shift control solenoid valve coils. It says if the resistance of the shift control solenoid valve A is high then there is an open circuit and it will outup trouble code No. 41 as output. If the resistance is low then there is a short circuit and it will output trouble code No. 42. The same goes for the shift control solenoid valve B. If the resistance is high then there is an open circuit and it will ouput trouble code No. 43. If the resistance is low then it has a short circuit and the trouble code No. 44 will be output.
It also says if you get trouble code 41 or 42 as output 4 times it will output a fail-safe trouble code No. 83 and the transmission is locked in 3rd gear as a fail-safe measure. Same goes for trouble code 43 and 44.
It also says it could be the wiring harness between the transmission control module and the solenoids.
Or it could be a faulty transmission control module.
My main question is if it is one of the solenoids or the shift control solenoid valve A or B coil, which I think is the problem, where would I be able to buy one of these solenoids?
Can they be bought individually or do they come in the set of 4 or can you buy just one shift control solenoid valve coil or do they sell them as both the A and B coil together?
And about how much am I looking at? $100, $200, $500. If it is one of the solenoids.
Also is this a common problem on this transmission?
Thanks in advance for any help and any questions to help me further with my problem just let me know.
First of all it is a 1997 Eclipse GS Spyder with the 2.4 L 4G64 engine, non-turbo.
The transmission is the F4A23-2-UPQ5 transmission. It's a 4-speed automatic transmission.
I have the P1750 code and I know that is the transmission solenoid assemby code.
My transmission is shifting very erratic. When I take off at a light it will not start off in 1st gear so I don't have much torque to take off so it is very slow taking off from an incline. And when it shifts it shifts hard. Cruising at 70 mph is at about 4,000 RPM.
I was going to drain the transmission fluid and take off the pan and filter and remove the valve body so I can test the contacts on the solenoids but I think I will just test to see what specific transmission trouble code it gives me so I don't have to do that first.
I know there are 4 solenoids. The torque converter clutch solenoid coil, the pressure contol solenoid valve coil, and the shift control solenoid valves A and B coil.
My service manual tells me that the ohm spec for the torque converter clutch solenoid coil is approx. 13 ohms
For the pressure control solenoid valve coil it's approx. 3 ohms.
And for the shift control solenoid valve A and B coil it's approx. 22 ohms.
All at 68 degrees Farenheit.
I am thinking it is one of the two shift control solenoid valve coils. It says if the resistance of the shift control solenoid valve A is high then there is an open circuit and it will outup trouble code No. 41 as output. If the resistance is low then there is a short circuit and it will output trouble code No. 42. The same goes for the shift control solenoid valve B. If the resistance is high then there is an open circuit and it will ouput trouble code No. 43. If the resistance is low then it has a short circuit and the trouble code No. 44 will be output.
It also says if you get trouble code 41 or 42 as output 4 times it will output a fail-safe trouble code No. 83 and the transmission is locked in 3rd gear as a fail-safe measure. Same goes for trouble code 43 and 44.
It also says it could be the wiring harness between the transmission control module and the solenoids.
Or it could be a faulty transmission control module.
My main question is if it is one of the solenoids or the shift control solenoid valve A or B coil, which I think is the problem, where would I be able to buy one of these solenoids?
Can they be bought individually or do they come in the set of 4 or can you buy just one shift control solenoid valve coil or do they sell them as both the A and B coil together?
And about how much am I looking at? $100, $200, $500. If it is one of the solenoids.
Also is this a common problem on this transmission?
Thanks in advance for any help and any questions to help me further with my problem just let me know.