Question about 1998 Ford Escort

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Have a 96 suzuki vitara. check engine light came on. code from computer said TCC sol short. still drives good but sometimes konks out when idling. can anyone narrow the problem for me? not sure if its a major transmission problem or just a fluid and filter change or the solenoid needs replacing. thanx alot

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  • Simon Atkinson
    Simon Atkinson Jan 03, 2018

    Hi mahalajade, I want to help you with your question, but I need more information from you. Can you please add details in the comment box? What was the actual code the computer gave you?

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Check your oil level as well as your solenoid and/or intermittent coil wire problem.

Posted on Jan 03, 2018

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It is a solenoid short, so check the wiring to it and replace it. See the link

Vitara TCC sol short Google Search

Posted on Jan 03, 2018

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Posted on Jan 02, 2017

Molson02536
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SOURCE: p1744 enginge code tcc solenoid circuit

DTC P1744 is "TCC - Excessive Slip Detected During Full TCC Engagement". Which means that the Torque Converter Clutch (TCC) is disengaged or the EPC pressure is at the minimum.

The most likely cause is a sticking or bad TCC solenoid inside the transmission. You can check the connector at the transmission to make sure it is clean and tight and that it is not damaged in any way.

If the TCC and wiring is okay, then pressure testing of the transmission will need to be done.

A new torque converter from Ford is about $265.00 and about 4 hours labor. Throw in a $40.00 TCC solenoid and I don't think it'll be more than $700.00 at worst.

If the pressure test is good then it's just going to be the $40.00 tcc solenoid and the cost of the transmission oil and filter changed which should be around $150.00

Good luck and hope it's just a loose wire harness to the solenoid which would cost $0.00 and just your time to locate the break in the wire. The other thing to, is to add a transmission fluid additive that would restore the clutch pack in the transmission and Torque Converter.

Posted on Nov 17, 2009

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1 Answer

Car konks out and check engine light come on.


The check engine light is because all check engine light codes are caused by components that affect emissions. It's not actually an engine problem, it's a problem with either your O2 sensor, MAF sensor, fuel/air ratio, pyrometer, or exhaust.

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Both codes (obviously) point to transmission related problems. The DTC P0700 means Transaxle Control System Fault Conditions and the DTC P0742 code means Torque Converter Clutch (TCC) - Stuck On.

The DTC P0700 code is for information only and the next step is to check for transaxle codes in the Transaxle Control Module (TCM). So you'll have to have the dealer or another qualified shop/technician pull the transaxle codes from the TCM and go from there.

On DTC P0742, Torque Converter Clutch Solenoid Valve (TCC Sol. Valve) is a normally-open exhaust valve that is used with the Torque Converter Clutch Pulse Width Modulation Solenoid Valve (TCC PWM Sol. Valve) in order to control fluid acting on the converter clutch apply valve. The TCC Sol. Valve attaches to the transmission case assembly extending into the pump cover. When grounded (energized) by the Vehicle Control Module (VCM), the TCC Sol. Valve stops converter signal oil from exhausting. This causes converter signal oil pressure to increase and move the converter clutch apply valve against spring force and into the apply position. In this position, release fluid is open to an exhaust port and converter feed fluid fills the apply fluid circuit. The converter feed fluid applies the TCC. When the VCM no longer provides a ground path, the TCC Sol. Valve de-energizes and apply fluid exhausts, releasing the TCC.

Condition: Some customers may comment that the transmission shifts hard, a shudder/chuggle is felt on deceleration or the Service Engine Soon (SES) light is illuminated.

A technician may find DTC P0742 set. Customers with 4T80E transaxles may also comment on a "bump" feeling at approximately 61-68 km/h (38-42 mph) when they lift and then tip into the throttle. There may also be a concern of whine noise in 3rd or 4th gear with or without the Service Engine Soon light/message displayed and with DTC P0742 set.

Correction:
Note: DO NOT REPLACE THE VALVE BODY AND PUMP ASSEMBLY.

Important: This test is not applicable to the 4T80E transmission. Instead, replace the TCC PWM solenoid on vehicles with a 4T80E transmission using published procedures for the vehicle being serviced.

Perform one of the following diagnostics:
• Test drive the vehicle with the Tech 2® installed, Monitor TCC Release Pressure. The Status will be YES until TCC applies and then the display will read NO. If during acceleration the status remains NO and the upshifts are harsh and during deceleration the vehicle shudders during downshifts, suspect the TCC PWM solenoid.
• With the Tech 2 installed in the vehicle, start the engine. Build the vehicle on the Tech 2®. Apply and firmly hold the service brake. Place the transaxle in D4 and command Drive 3 with the Tech 2®. If the engine stumbles and/or stalls, suspect the TCC PWM solenoid.

Replace the TCC PWM solenoid using published procedures for the vehicle being serviced.

Hope this helps; and just keep in mind that your feedback is important and I'll appreciate your time and consideration if you leave some testimonial comment.

Have a nice day and thanks for using FixYa.
Jose.

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