I have a 1998 Chevy cavalier that's giving a trouble code p1870 I have changed the Tcc solenoid but it comes back. How else can I solve this problem?

There isn't a code P01871 , nor P1871 . DTC - P1870
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 +50 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.


Your best bet ,take your vehicle to a qualified repair shop.
Bronze material found in the transmission oil pan may indicate stator shaft bushing wear. If bushing wear is suspected, inspect the stator shaft and the input, turbine, shaft for damage.
• Refer to Symptoms - Automatic Transmission for more information.

Hi Ashley Farmer , my name is Jeff Armer . Which solenoid , your Cavalier has four , Pressure control solenoid , TCC - torque converter clutch solenoid , 1-2 shift solenoid and 2-3 shift control solenoid . And all are located inside the transmission . Do you have a DTC - diagnostic trouble code stored in the PCM - powertrain control module ?

Code P1870...What does it mean??? - GM Forum - Buick, Cadillac ...

www.gmforum.com > ... > 1992-199
Jun 9, 2005 - Location: Bloomington-Normal, IL 1997 SE ... Default Code P1870...What does it mean??? I got a CE light the other day, and this is the code that was read word for word: P1870 ... No TCC solenoid electrical DTC P0740 ... Code P1870 & Speedometer error, Hi_tork, 1992-1999, 4, 10-16-2011 04:08 PM.

Possible causes
- Faulty Torque Converter Clutch Pulse Width Modulation (TCC PWM) Solenoid
- Torque Converter Clutch Pulse Width Modulation (TCC PWM) Solenoid harness is open or shorted
- Torque Converter Clutch Pulse Width Modulation (TCC PWM) Solenoid circuit poor electrical connection

Here is the definition of the code.
I doubt replacing an electrical component would do it.

P1870 CHEVROLET Description Transmission is in 4th gear with Torque Converter Clutch (TCC) engaged and the Engine Control Moduel (ECM) has detected excessive slippage when comparing the input shaft speed to the output shaft speed
Read more: http://engine-codes.com/p1870_chevrolet.html#ixzz26gqhKHvr

P0741 TCC STUCK OFF If the PCM detects high converter slip when the TCC is commanded on, then a DTC P0741 will set. The following conditions must exist for two times during the same ignition cycle. This code will set for all the same reasons that a P1870 will set: • The TCC duty cycle is greater than 50% • The TCC slip speed is greater than 180 RPM for 7 seconds • TCC slip in 3rd gear on 4L80-E transmissions Known causes for P0741: • Worn TCC valve bores in the valve body • Damaged or worn pump bearing seal • Defective TCC PWM or TCC apply solenoids • Restricted separator plate solenoid feed orifice • Defective converter • Computer reprogram • Channel plate sleeve & turbine shaft sealing ring damage I would suggest changing fluid and filter & reset pcm.

Actually, the Torque Converter Clutch Solenoid is located within the transmission housing that is easily accessible through the transmission oil pan. The TCC solenoid may vary in location dependent upon manufacture but generally it is located as aforementioned. It can cause your vehicle to stall if stuck open or close because it controls loads to the engine via your torque converter which is located between the vehicle's engine and transmission. Also, make certain that you attempt to change the transmission fluid and filter before changing the TCC solenoid because that may be your underlying issue. If not, simply reuse your fresh oil and change the TCC soleniod.

well most likely the transmission fluid needs to be drained and then put in new fluid to the right amount needed, that shall solve your problem. bonus tip also have the clutch stick adjusted if its a manual vehicle.

DTC P1860 is set if PCM detects a continuous open or short to ground in the TCC PWM solenoid circuit.

If your inclinded to attempt to fix this yourself, I have some trouble shooting proceedures that you can use. They are very involved, and could require the trans oil pan to be removed to get access to the solenoid.

If your not up to that, take it in to get it fixed.

TCC PMW solenoid is used to control fluid flow acting on the converter clutch valve.
The Solenoid controls TCC apply and release.
The Solenoid is attached to the transmission valve body. To get to it you have to remove the tranmission oil pan. Changing it should be no problem.
But do you need to replace it? To determine that you have to figure out if it is the wiring that goes to the solenoid or if the solenoid itself is shot.


The PCM uses the TCC/PWM solenoid to control when the torque converter clutch applies and how soft or harsh the TCC apply feels to the customer. The TCC/PWM also controls the release feel of the torque converter clutch. "


Ignition voltage is supplied directly to the solenoid through a fused circuit. The Powertrain control module commands solenoid on or off by applying or removing the ground.


P0753 Shift Solenoid A Electrical P0758 Shift Solenoid B Electrical
Good luck and hope this helps

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.