It makes a grinding noise when starting to stop and dies. It will start up again but when I put in drive it dies. Start again and have to rive engine and throw it into drive and it will go but with a noise. Punch it and sometimes it will go back to normal but lately it doesn't. What is going on? When working, it does not have shift hard.
Might be a sticking torque converter solenoid. The torque converter could be acting as if the clutch is engaged on a manual trans. car.
Is the check engine light on and does it die in reverse too ?
SOURCE: Trans shifts very hard after 5 minutes of stop and go traffic
A reason for hard shifting could be a problem with many things with various degrees of seriousness. It could be your ATF( automatic transmission fluid) is low or broken down and old. This would cause the hardness and the reason for stop and go traffic effecting it. Another possibility is your transmission is just shot, and the timing gears inside are worn and not properly shifting at the correct RPM causing a **** during shifting.
Some possibilties, not all!
~Lucas
SOURCE: reverse doesn't work. drive slips
Sounds like a transmission problem. It could be just electrical, but sounds like it may be partially internal with the reverse problem you are having. You need to take it to a trans shop, or the dealer.
SOURCE: 1998 jeep grand cherokee 4x4. have the p0740
P0740 JEEP - Torque Converter Clutch Circuit
Symptoms
- Engine Light ON (or Service Engine Soon Warning Light)
- Transmission shift shock
- Vehicle may not shift into the highest gear
Possible causes
- Low transmission fluid level
- Dirty transmission fluid
- Faulty torque converter clutch solenoid valve
- Torque converter clutch solenoid valve harness or connectors
- Torque converter clutch solenoid valve circuit is open or shorted
When is the code detected?
Torque Converter Clutch (TCC) unlocked for 10 sec., ECM commands converter lock-up and did not record engine speed drop.
P0740 JEEP Description
The torque converter clutch solenoid valve is activated, with the gear in D4, by the Transmission Control Module (TCM) in response to signals sent from the vehicle speed and the Engine Control Module (ECM). Lock-up piston operation will then be controlled. When the torque converter clutch solenoid valve is activated, the torque converter lockup clutch will engage creating a 1 to 1 RPM ratio between the transmission input shaft and the rotational speed of the torque converter.
Lock-up operation, however, is prohibited when A/T fluid temperature is too low.
When the accelerator pedal is depressed (less than 2/8) in lock-up condition, the engine speed should not change abruptly. If there is a big jump in engine speed, there is no lock-up.
I’m happy to help further over the phone at https://www.6ya.com/expert/jeremy_69f3cc28d95bf514
118 views
Usually answered in minutes!
×