Question about 1988 Dodge B250
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Posted on Jan 02, 2017
Dodge RAM 3spd auto transmissions (RWD) available for the 3.9L engine were:
If you can't find your model code on the transmission casing, the vehicle build plate (in the engine bay) should have the factory drivetrain code stamped on it.
Failing this, Chrysler/Dodge should have your transmission details on their database.
If you end up replacing the entire transmission, you might as well upgrade to the improved 4-speed. Most Chrysler/Dodge RAM transmissions were a universal fit, but some had stronger internal components to withstand the higher torque of the larger capacity engines.
I've located a link which has more technical detail on the transmission:
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Posted on Jul 02, 2010
Testimonial: "Wolfman304 "Rocks", he was able to get information about my van that the manufacturer was unable to provide. Fixya has a fan."
4th gear is shifted electrically. If you have a 4.7 engine the following advise does not apply(different trans) but most likely culprit it the output speed sensor
in tail end of the trans.The PCM uses TPS, vehicle speed, output speed sensor and OD switch to know when to shift to 4th. 4.7 engine uses a 45rfe trans and would require a scanner to diag.
Posted on Oct 18, 2008
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