Quote:
Originally Posted by Shade Tree Mec
Am sorry bringing back this bad experience, am living it right now, i had changed the whole tranny with a used one but it did not fix the problem, I know the valve you are talking about it is the correction kit for the worn TCC valve, I hope you never face such a problem in the future.
I'll buy this kit and see if it would solve the problem
Thanks Man
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P-1870 means "Transmission component slipping". A very common problem with these transmissions which sets a P-1870 is 2 valves in the valve body, the TCC regulator and isolator valves. The reason for the problem is these valves wear out their respective bores, the converter clutch apply oil passes by the worn valves lowering the apply pressure of the converter clutch. The clutch then starts slipping and chattering, sets a P-1870 and maxes out the line pressure causing harsh shifts. You replaced your transmission with a used transmission which most likely had the same common problem. The way I usually fix these is with a kit from Sonnax. The valve body is removed, both tcc regulator and isolator valves are removed, their bores reamed, sleeves installed with new valves. This is what needs to be done and will cure 95% of P-1870 issues.
transman