Do I have automatic trans problems with a p1870 code??
11-21-2005, 09:35 PM
#1
Do I have automatic trans problems with a p1870 code?? My car threw a p1870 code.
I installed a TCI ssf 3500 and trans cooler about 4 and a half months ago and I got tuned from Speed Inc. a month ago and noticed my shift points to be alot smoother.
The car runs great BUT;
A week and a half ago I discovered that my Transmission was overheating and almost reached 225 degrees according to my trans temp gauge. I went under the car and discovered a big newspaper covering the Transcooler, I removed it.
Lately, since I removed the paper, the trans temperatures have not reached that high, driving around town on the highway or stop light to stop light for an hour or so. Maybe 180 to 190 tops. On average 30 minute drving it only reached 150 degrees.
I have been keeping an eye on the trans fluid and it is perfectly filled.
I do not feel the trans slipping at all because it locks.
What can be the problem? Should I worry? Is it the tune?
Anyways the car is not going to be driven because it will be placed in storage soon, for the winter and snow as it is only a week end car.
Thanks for your help guys.
Any input greatly appreciated.
Sincerely
Robert
I installed a TCI ssf 3500 and trans cooler about 4 and a half months ago and I got tuned from Speed Inc. a month ago and noticed my shift points to be alot smoother.
The car runs great BUT;
A week and a half ago I discovered that my Transmission was overheating and almost reached 225 degrees according to my trans temp gauge. I went under the car and discovered a big newspaper covering the Transcooler, I removed it.
Lately, since I removed the paper, the trans temperatures have not reached that high, driving around town on the highway or stop light to stop light for an hour or so. Maybe 180 to 190 tops. On average 30 minute drving it only reached 150 degrees.
I have been keeping an eye on the trans fluid and it is perfectly filled.
I do not feel the trans slipping at all because it locks.
What can be the problem? Should I worry? Is it the tune?
Anyways the car is not going to be driven because it will be placed in storage soon, for the winter and snow as it is only a week end car.
Thanks for your help guys.
Any input greatly appreciated.
Sincerely
Robert
11-21-2005, 11:10 PM
#2
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I found that heat made my TCI slip more, too. Did
not seem to be any permanent damage. I think the
transmission bleeds too much pressure off at higher
temps (force motor table).
not seem to be any permanent damage. I think the
transmission bleeds too much pressure off at higher
temps (force motor table).
11-22-2005, 11:38 AM
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You may not need to do anything (except keep
stuff from blocking the rad). But you probably
ought to do some road logging of TCC slip and
see whether the clutch is holding well in general,
or is marginal (like, over 100RPM of slip on light
grades like overpasses). If it's marginal then I'd
go ahead and make sure the TCC min % and max
% are both set to 98, and start shaving back
the force motor current in the 0%, 6% columns
(at least) to run less current, more line for the
TCC to work with.
stuff from blocking the rad). But you probably
ought to do some road logging of TCC slip and
see whether the clutch is holding well in general,
or is marginal (like, over 100RPM of slip on light
grades like overpasses). If it's marginal then I'd
go ahead and make sure the TCC min % and max
% are both set to 98, and start shaving back
the force motor current in the 0%, 6% columns
(at least) to run less current, more line for the
TCC to work with.