I have a 1994 buick lesabre that was running good until the end of december. I stopped driving it for a couple of months and started driving it last week after getting my transmission filter & fluid changed. Its not wanting to go into gear unless you put it in 1st then switch it up to overdrive. I have to do this at every stop light and stop sign. It also has a problem with starting to **** when you go faster then 45 or 50 mph.
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P1870 ! not P01870
DTC P1870 Transmission Component Slipping (Buick Built Before 6/17/97)
DTC P1870 Transmission Component Slipping (All Other Applications)
The Powertrain Control Module (PCM) monitors the Torque Converter Clutch (TCC) slip by calculating the difference between the engine speed and the transmission output shaft speed.
If the PCM detects an excessive amount of slip when the TCC is engaged, then DTC P1870 sets. DTC P1870 is a type B DTC.
Hello, I'm not sure if you are still dealing with this problem, but here are a few tips.
1.When the car is running and at normal operating temperature, check the transmission fluid level. If the transmission fluid level is low, this will cause the Transmission to slip when in drive.
2.If you transmission fluid level is low, this usually indicates you have a leak. Transmission fluid does not need to be changed like other fluids such as oil.
3.You may also want to add a "stop slip" agent to you car, this may help or possibly correct the problem.
4.If all else fails, I would recommend you take you car into a certified Transmission shop. Please vote or rate this reply if you found this reply helpful.