When the transmission is in fail safe mode, the vehicle should only be drive home or to the repair shop. All Messages in Thread Author Date Jim 5-10-04 I have a 1997 Dodge 2500 conversion van and the check engine light came on and it is giving a code of P0740 - Torque Converter Clutch Circuit Malfunction. Dont chance that with a trans which has over 200k on it. Shift Solenoid 'D' Performance or Stuck Off P0767. Shift Solenoid 'B' Electrical P0759. Pressure Control Solenoid 'A' Intermittent P0750.
You shouldn't be seeing P0740 all by it's lonesome. A transmission that slips while in lockup because the system is overloaded will generate tremendous heat. Fact 3: When lockup ocurrs, the converters pump and turbine are coupled resulting in no slippage. I have noticed that it is now having a problem shifting up from 2nd to 3rd gear. Then if that doesnt work, I could try unhooking the wire to the solenoid. No issues as of now!!! Excessive heat build up in an automatic transmission is the 1 cause of catastrophic failure.
While in other cases, some vehicles may show drivability problems, such as misfire-like symptoms or engine dying when coming to a stop. The mechanic told me that I have to change the converter. You just lose the lock up torque converter function which will reduce fuel mileage. It depends on what part of the system failed and how badly it failed. What is this and how do I figure out what's wrong with my car. Tony 4-1-09 I have the code 740 on my Durango 2001,how I can fix it.
I did electronics 7 years ago, and now have forgotten everything. What will make this problem go away????? My mom's Accord did the same thing, and it had even less mileage than my car. Doesn't seem as simple as what I have first thought. If you are missing the 2-3 shift you should have a code set for that. The advantage of an electromagnet over natural magnet is that it can be turned on or off when required by energising the coil. Every link I posted supports my statements.
Which is why it is important that you attach a whenever you are working on the car with the ignition on. We will understand why it is designed so, once after taking a look at the complete circuit. What Does the P0740 Code Mean? Pressure Control Solenoid 'A' Electrical P0749. This is usually in the range of 40-50 mph. Since it has over 204.
Brandon 9-5-07 I have a 1997 Honda Accord with 177k miles and it just through on the Check Engine light for the P0740 code! Now, if the purple wire at the tranny plug did not have power when you checked it, then the problem is some place between the fuse block and the plug. The wires should also have a low ohm reading. Intermediate Shaft Speed Sensor Circuit No Signal P0794. Positioned between the rear of the engine and the front of the transmission is the torque converter. If you follow the test step by step, you will be able to determine the exact cause of the problem. If it does, then you know that the fuse is good, and that the brake switch is working as it should. Transmission Range Sensor Circuit intermittent P0710.
Then, find the right wires for the torque converter clutch. The solenoid draws a continuous current of 700mA when energised and a peak of nearly 1. Your Name: Your Email: Message: Type Code in box: Code is case-sensitive. I've been getting a check engine light that comes and goes. Jose 11-14-06 1999 dodge dakota Cory 11-16-06 I have a 99 civic and the check engine light came on. Then, check the external connectors and transmission harness.
Then go to A7 on the ecm connector and see if that end shows a ground while terminal F is grounded. Finally, the car may idle roughly and not feel right as there is little slip in the converter and the car will want to move more than normally when sitting with your foot on the brake. Depending on the circumstances, the result could be destroying the diode, destroying the switch that controls the solenoid, destroying the power supply, or this one matches the symptoms pulling down the voltage on the power supply so that the circuit no longer functions. The symptoms of a torque converter clutch solenoid that fails while in the open position are quite different from a solenoid that fails in the closed position, as described above. Ken 4-4-13 Where can I buy one? It still give me this code. Check for Wire Connection The most important and initial step is to determine if any bad connection or wiring is causing the P0740 trouble code to generate. If you notice early symptoms of the P0740 code, it is a good idea to follow the guide above and diagnose the issue or take your car to an auto specialist.
Moreover, the low battery may also generate additional trouble codes which will make the situation even more confusing. It was intended as a beater plow truck for me anyway. Transmission Range Sensor Circuit Low Input P0708. I took the van to Meineke and they did a transmission flush and filter change and the error went away. Engine Speed Input Circuit P0726. A few tips for you guys.
Did you find a short to ground condition? You will have to take the pan off,then there are some bolts to take out and you will see the brain of the transmission. Shift Solenoid 'C' Stuck On P0763. Pressure Control Solenoid 'B' Electrical P0779. No issues as of now!! Kim Kelly 7-17-07 I am going threw the same thing with my 99 voyager. It lasted about 10,000 miles without coming on again after that. What should I tell them to look at before costing me an arm and a leg? Gear 2 Incorrect Ratio P0733. Transmission Fluid Temperature Sensor Circuit Intermittent P0715.