It was hooked to scan tool and it came up solenoid so they were replaced and when the transmission was reinstalled the check engine light came on
This is what I got for you:
READING DIAGNOSTIC CODES:
1. Connect an analog Voltmeter to the ground and the transmission self diagnosis output pin of the diagnostic connector.
2. Set the ignition switch to "ON".
3. Note the pattern of pulses displayed on the Voltmeter. If the Voltmeter indicates a steady Voltage (either 0 Volts or 12 Volts) the TCU has failed.
4. Refer to the diagnostic codes chart to determine which device is causing the malfunction code.
5. Test and repair the offending components as necessary.
6. Clear the malfunction codes by disconnecting the vehicle battery negative terminal for ten seconds or longer.
7. Road test the vehicle and recheck for newly stored diagnostic codes.
8. After the cause of a failure code has been detected and corrected the diagnostic code memory of the TCU should be cleared by disconnecting the vehicle battery for 10 seconds or more. DIAGNOSTIC CODE INTERPRETATION The Transmission Control Unit monitors operation of the transmission control system. Some components are monitored continuously, others only during specified operating conditions. When the TCU detects a malfunction lasting longer than a specified period of time the TCU will generate an error code that can be detected at the diagnostic connector. If multiple malfunctions occur the diagnostic codes will be sent sequentially beginning with the lowest number code in ascending order with a 2 second pause between each code. A maximum of up to 10 fault codes can be stored in the control unit's memory and the same fault code can be stored as many as three times. If the number of stored codes exceeds 10, previously stored codes will be erased, beginning with the oldest code. The Voltmeter needle will deflect for a particular duration and a certain number of times.
FOR EXAMPLE:
Code 13
The needle will deflect one time for approximately 0.5 second. This will represent one unit of ten. There will be approximately a one second delay and then the needle will deflect three times for approximately 0.2 seconds with 0.1 second delay between deflections. This will represent three units of one.
Code 23
The needle will deflect two times for approximately 0.5 second with approximately 0.3 second delay between deflections. This will represent two units of ten. There will be approximately a one second delay and then the needle will deflect three times for approximately 0.2 seconds with 0.1 second delay between deflections. This will represent three units of one.
If the fail safe system is activated and the trans axle is locked in 3rd gear, a fault code from the fail safe code chart will be stored. Cancellation will occur if, with the trans-axle locked in 3rd gear, the ignition key is turned to the OFF position, the code is stored until cleared. SRSONE.............
SOURCE: replaced trans, now car is stuck in limp in mode
MCARTER859: check the connections where the transmission harness and engine room harness come together. Unplug them and reconnect them I have run into more than one case with the same symptoms as yours which ended up being nothing more than poor connections.
CROSS YOUR FINGERS1
SOURCE: limp mode on a automatic
Firstly, disconnect the battery and leave it for a few hours. Reconnect and try the car again. This resets the memory in the TCM. If the car picks up the faults again, it will go into limp mode again after a short while. If it's been a while since you changed the fluid, then put some seafoam transtune in to clean all the parts and plates. Then after a few days at least, preferably a week, go for a fluid and filter change. After this, you'll probably find it will go into limp mode again, just disconnect the battery again and reconnect after a few hours. I had the same problem in my chrysler T&C. I left seafoam in it for a week and it cleaned up all of the gum and varnish build up on the shift solenoid pack and plates.
If the problem persists, and after you find it allows you to change gears for a while and then goes into limp mode, it could be gummed up solenoid pack, or input speed sensor.
Go to o'reillys and plug in their diagnostic tool. It should provide you with the fault codes if any. If no codes, then your TCM and ECM are in good shape, and if you're lucky then it'll be something simple like a sensor, or solenoid. Try cleaning it first with seafoam transtune in the fluid for a week.
If all else fails, and their are fault codes, then take the car to a trusted transmission repair shop for a road test. The computer could be picking up slippage and making the car go into limp mode. This could be the clutch plates if no errors with the TCM, ECM are present, and you've ended up checking out the input speed sensor, and solenoid pack. The latter can cause hard shifting and slippage too, if the seed sensor is set to signal when to change gear, but the new oil, or old oil have made the friction slightly different to what it is used to or within factory limits. Firstly try reseting the TCM by disconnecting the battery for a while and see what happens.
Good luck
SOURCE: 1992 3000gt automatic stuck in limp mode,(3rd and rev.) HELP!
the car has the capablilites to give data and codes. You gunna need a professional if you dont have access to a scanner and multimeter. Otherwise were just guessing.
I hate telling people that its out of their hands but sometimes its best to let the pro diag it and then you can repair it if you capable
SOURCE: automatic transmission is stuck in 2nd gear (limp mode)
it is eletical eather a fuse is blown or the speed sensor didnt get hooked up dose spedo work
SOURCE: TRANSMISSION IN LIMP MODE. NEUTRAL
had a similar problem with same car. turned out there was a bad o-ring on the heater core, which happens to be right above the TCU. It was dripping on it and causing it to short out. replaced the o-ring and has been fine ever since.(about 60k mi ago)
439 views
Usually answered in minutes!
×