1990 dodge b250 van A/C noises
I switched from the R-12 to the R-134 A freon, when we drained the R-12 the system was sealed and operated however it was not cooling. The Freon was after all over 17 years old. Now the system cools nicely however a noise that was not their before that sounds like a high speed rattle, and is louder as the rpm climbs.
Also I replaced the speed sensor on the tranny, the speedometer works as does the cruise now, however the odometer and trip meter are both not working.
After I replaced the speed sensor now the overdrive kicks in and out at speeds above 30 mph, any ideas?