Torque converter lockup on the 700R4 transmission is controlled by the TCC solenoid. The plan was to unplug the solenoid, providing there is a connector that can be unplugged outside the trans, to see if it got rid of the problem. When you say you tried everything, did "everything" include a bottle of lubeguard or equivalent friction modifier? The fluid was wasted, brown and the trans was having trouble. There will probably always be situations where the cost to replace the TCC solenoid (for the non-DIYer) or the lack of desire to undertake the work on a beater will result in simply disconnecting the solenoid control cable. It sets with in a few seconds of being cleared no driving needed. 45) removal … Facts is facts whether you like it or not. 4l60e TCC Guide; How To Remove Transfer Case From 4l60e; 4l60e Shift Kit Guide; 4l60e Shift Solenoid Guide; Search for: Main Menu. code - po1860 tcc pwm solenoid circuit malfunction 4t80- E conditions.5 possible causes 1. tcc solenoid control circuit is open or shorted to ground. The only thing I can add is on the ohm test unplug the coil and test ohms on the coil by itself. That occurs when the solenoid is stuck closed when coming to a stop. Wait for a few minutes for the engine to warm up, then gently press the accelerator twice and rev up the engine. One thermostat controls both engine and trans. As far as trans shops go the small mom and pop type of shop will do you much better than those large chain type shops. Inspect the solenoid for a mounting bolt. I like to remove all of the bolts down the sides of the pan, then remove all but the center bot on the front and rear. [ I’m glad the parts suppliers (almost) made their minds up on a common name for this part !]. [This message has been edited by fierofool (edited 05-02-2018).] Those latches tend to break off when you depress them to separate the old one from the case and it's best to have a new one on hand. tcc. There is a claw bracket with a single bolt holding the solenoid in. Ensure that the color-coded wires match the color on the replacement solenoid you purchased. It is rather difficult to get to and replace. So I pulled the PCM out from the engine compartment, looked up the "B+" pin for the TCC solenoid, and cut it in the harness close to the connector. Every link I posted supports my statements. I was afraid I’d get pulled over for being seriously overloaded. The torque converter clutch solenoid controls the pressure exerted by the transmission fluid on the torque converter clutch. When your 4l60e’s TCC solenoid begins to fail, there are a number of obvious signs. Thanks for all the advice. Forgot the kinda Jeep, 80 SX4. Pull Solenoid Out – The solenoids have a rubber o-ring that provides their seal, so simply wiggle and pull on the solenoid to remove it. A TCC solenoid converts electrical signals to mechanical ones that prompt the converter clutch to engage and disengage appropriately. NOTE: This test is done on the lock-up solenoid's connector AND NOT on the engine wiring harness' pigtail connector. Inspect the solenoid for a mounting bolt. Does anyone know if there is a diagram anywhere on the internet showing exactly where the solenoid is located? You can stop at the TCC solenoid (Fig. Step 8. It is a small solenoid located on the side of the transmission (driver's side) underneath the cover. When the vehicle is coming to a stop, applying the clutch is not a good thing. The car only does this when we slow down to stop. Torque Converter Clutch UCC) Solenoid Vúe Control Torque Converter Clutch Pulse Width Modulation (TCC Solenoid Valve Control Input Speed Sensor (ISS) Low Signal P 'N Position Switch Signal K V Wire 0.5 L-GN 0.5 YE L-BU 0.5 RD 0.35 0.35 YE 0.35 0.35 OGBK 0.5 GY O.SBW*Æ 0.5 BK 0.35 D-BUAVH 0.35 OGBK Circuit 1222 1223 1228 1229 839 771 773 776 1230 1227 452 1551 … SOURCE: 2002 Sunfire TCC Solenoid replacement hi..the transaxle converter clutch . Then we try to start it, it runs, until we put it into gear, then it dies again. Disconnecting the lockup solenoid will not only cause a loss of MPG but it will cause the transmission to run much hotter and depending on how hot your trans is running normally it can most definately cause the transmission to overheat. Remove Clip Holding Solenoids – With the use of a pick or screw driver, remove the small c shaped clip holding the solenoid into place. I’ve had good luck unsticking TCC solenoids using the SeaFoam. Reinstall in the reverse order. But sometimes this can be misleading because you don't know for sure if it's a bad solenoid, dirt in the valve body or a bad signal from the ECM. Then you need to unclip the lead frame wire harness from all of the solenoids. Look at it real good, on your vehicle you just might be able to get that cover off without lowering the engine cradle. Next, if the transmission filter is clogged that can also lead to difficult, uneven shifts – but a fluid and filter change should correct this. You need to pry this open with a pick then pry the lead frame off the connector gently. Slowly rock the solenoid back and forth while exerting a downward pull on the solenoid bracket.
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