Question about 1998 Ford Escort

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P1744 enginge code tcc solenoid circuit

P1744 enginge code tcc solenoid circuit range/perf is this a sensor inside the transmission that needs to be replaced or trans rebuild?

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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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You may need a torque converter lockup solenoid or it could be as simple as a loose, corroded or cut wire going to the tranmission

Posted on Nov 17, 2009

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Check your transmission fluid before spending money at a garage. Low transmission fluid will set off code P1744. That is what triggered it in my 03 Ford Escort ZX2.

Posted on Apr 27, 2019

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I have a 1999 mercery sable with a automatic transmision and it shifts hard in low gears please help with this problem would help alot. Thanks

Posted on Sep 21, 2011

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Posted on Jan 02, 2017

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Ok one major question! Will changing the tcc solenoid in my 01 cougar fix the o/d flashing and make the car go forward when I try to drive it?


No. replacing the TCC or the OSS, will not make the transmission work. You can unplug these transmissions and they will still work, less OD. Sounds like you may have stripped the torque converter oil pump gear. Common in these older Mercury/Fords.

Mar 18, 2016 | 2001 Mercury Cougar

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How to fix p1744 on 2001 ford expedition


This code has to with the TCC - Torque converter clutch
P1744 TCC TCC The PCM picked up an excessive amount of TCC slippage during normal vehicle operation. TCC slippage/erratic or no torque converter clutch operation. Refer to Diagnosis By Symptom in this section. You'll need to pull the transmission out an replace the torque converter ! Your better off taking to transmission shop an having a proper diagnosis done !

Feb 18, 2015 | 2001 Ford Expedition

1 Answer

Repairing a converter clutch solonoid circuit stuck on


The TCC solenoid is inside the transmission.. It is controlled by the computer .. which takes singles from the heat sensor, the speed sensor, the brake sensor. Its job is to increase fuel mileage by reducing slipping in the converter.. You need to check the wiring plug at the trans and see if it has a single from the computer keeping the TCC engaged... OR is it a mechanical problem with the solenoid.. Then you can trace which circuit is causing this OR if the solenoid is defective.. Hope for the solenoid.Post a comment and let us know what you find..

Jun 01, 2014 | 1999 Buick Park Avenue

1 Answer

2002 ford escape v6 with trans code p1744 and 741


Unfortunately, the possible issues are numerous. The problem is most likely either your torque converter, or electrical issues with your transmission. Without knowing how the vehicle is acting, if it's drivable, when it trips the codes, etc, it makes it more difficult to accurately diagnose.

Here is what ford says about those codes...

SERVICE PROCEDURE
The torque converter clutch may not engage if one or more of the following conditions exist:
- Stuck converter regulator valve
- Stuck solenoid regulator valve
- Stuck bypass clutch control valve
- Stuck pressure failsafe valve
- Pump bore ring groove depth incorrect
- Worn pump shaft or damaged pump shaft seals
- Pump shaft internal sleeve loose (rattles)
- Turbine shaft seals damaged or missing
- Incorrect Torque Converter Clutch (TCC) solenoid
- TCC solenoid mechanically stuck or electrically inoperable
- Damaged internal wiring harness
- Incorrect gear ratio (wrong sprockets)
- Damaged or worn stator support
- Worn torque converter hub bushing
- Torque converter clutch worn or damaged
Use a scan tool to monitor the following PID's:
- TCC = Commanded duty cycle for TCC solenoid
- TCCMACT = Actual slip across the TCC, measured in RPM
- RPM = Actual engine speed
- TSS_SRC = Actual turbine shaft speed
- TCCRAT = Speed/Gear ratio of torque converter/transaxle

Hope this helps.

Feb 16, 2014 | 2002 Ford Escape

1 Answer

Is the module and/or solenoids inside of the transmission or outside of the transmission on a 1993 ford F250?


The transmission control module is part of the engine controller in the firewall behind left fenderwell.There is a solenoid block inside the Transmission pan that contains 5 solenoids , 2 shift,1 coast , 1 tcc and 1 pressure control.Various engine sensors also input into the transmission controller such as TPS ( throttle position sensor ) , map/mass ( engine load ) , and engine rpm.Also there is a trans temp sensor built into solenoid block and a range sensor on the side of trans that tells the computer where there gear selector is.Vehicle speed sensor also inputs into transmission controller.It takes a lot of data to decide what gear the transmission should be in.

Feb 25, 2011 | Ford F-250 Cars & Trucks

2 Answers

My chk engine light came on and i went to autozone and they put it on there diagnostic machine and it came up to the code p0708 definition: my transmission range switch open circuit condition probable...


your vehicle is driving good, not slipping etc... because what i can see from what im reading you have an electrical problem with the transmission wiring.. check the plugs that plug in the transmission, and follow them, im sure you will find something skint up somewhere.

Dec 08, 2010 | Mazda 626 Cars & Trucks

1 Answer

I have 97 Acura RL 3.5/V6, got 'Check Engine Light' on (OBD Code P0740) about a year, my car is running OK, except slightly low fuel economy (19 Miles/Gallon). My questions are: 1)Could it be just Solenoid...


it will be a solenoid
the code p 0740 refers to torque converter clutch (TCC) solenoid ---circuit malfunction===causes --wiring--TCC-- ECM /? TCM ( transmission control module
it is not a transmission problem so leave it alone
it is an electronic control problem so check wiring and connections and if it is either the solenoid or the TCM replace what is faulty
take it to an accredited auto transmission specialist shop have an tranny oil change done , have the bands and clutch pack s adjusted and have them check the TCC solenoid and TCM for correct operation
probably find that there will be an improvement in the fuel consumption after that

Jun 06, 2017 | 1997 Acura RL

2 Answers

Where is tcc soloniod located . is it easy 2 access can i replace it by myself or 2 hard 2 do


The TCC solenoid is locared in the transmission, and although servicable it is unlikely the problem your want to fix, you are probably getting a trouble code that sent you looking, the problem is most likely that the trans. needs to be rebuilt. The sensor is sensing a shutter, which is most commonly the trans. slippping.

Sep 17, 2009 | 1995 Chevrolet Beretta

1 Answer

Engine service light / 4 codes read description below


P1744 is probably the TC going on the way out. :(

P 340 is probably the sensor itself. Don't get the Dorman one if it is the OHV motor.

P 401 is probably a bad DPF EGR sensor.

Jun 16, 2008 | 1997 Ford Taurus

3 Answers

GM service engine code P1870/2000 GMC Sonoma 2.2 cylinder


you jave a biggie here.
here is some info
CIRCUIT DESCRIPTION
The Powertrain Control Module (PCM) monitors the difference between engine speed and transmission output speed. In D3 drive range with the TCC engaged, the engine speed should closely match the transmission output speed. In D4 drive range, with the TCC engaged, the TCC slip speed should be -20 to +60 RPM .

When the PCM detects excessive TCC slip when the TCC should be engaged, then DTC P1870 sets. DTC P1870 is a type B DTC.

CONDITIONS FOR RUNNING THE DTC
  • No TP sensor DTCs P0122 or P0123.
  • No VSS assembly DTCs P0502 or P0503.
  • No TCC solenoid valve DTC P0740.
  • No 1-2 SS valve DTC P0753.
  • No 2-3 SS valve DTC P0758.
  • No 3-2 SS valve assembly DTC P0785.
  • No TCC PWM solenoid valve DTC P1860.
  • The engine is not in fuel cutoff.
  • The engine torque is 40-400 lb ft .
  • The TP angle is 12-50% .
  • The vehicle speed is 56-112 km/h (35-70 mph ).
  • The speed ratio is 0.64-0.95 (the speed ratio is the engine speed divided by the transmission output speed).
  • The engine speed is 1500-3500 RPM .
  • The gear range is D4.
  • The commanded gear is not 1st gear
  • The TFT is between 20-130°C (68-266°F) .
  • The shift solenoid performance diagnostic counters are zero.

May 16, 2008 | 2000 GMC Sonoma Extended Cab

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