hotcorner216
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- Southern California
I've only had this truck 2 weeks...Yes I've read the mounds of threads and posts on he th400 and adjusting the vaccum modulator and testing for leaks...so I pressure tested it and read 40 for a second or two then bounced down to 20 and then back up to 40, and kept doing this so I turned the screw a little to the left and now it's shifting smoother, but still way too high on the RPMs and it hasn't adjusted unlike the smooth and rough shifting. Prior to adjusting it did shift perfectly 3 times (3 times out of maybe 300 miles) ....didn't do anything diffrent...just came to a stop, accelerated and it would be fine for the next 3-4 stops and then back to rough shifting....it's very annoying and I'd like to know if there's something im doing wrong...should I just change the module and hoses?
Any help/advise would be greatly appreciated.
Any help/advise would be greatly appreciated.