98 24 valve 3500 Ram. Overdrive goes in and out between 43 and 53 mph under lite load. Trans recently rebuilt. Old trans did same thing. Any answers?

Asked by Steve Jan 10, 2014 at 01:45 PM

Question type: Maintenance & Repair

5 Answers

migration_judge_roy answered 10 years ago

....well here's a guess...The TCM is trying to control through vacuum modulators....thinkin' maybe the vacuum lines are bloated or dry and cracked...and leakin' vacuum....SO go to the specialty section and buy a reel of silicone vacuum tubing and replace ALL vacuum lines in all circuits..(all police cars use and BMW) uses this~

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Steve answered 10 years ago

I replaced the vac line from the tcm. It didn't fix it. Where is the vacuum coming from?

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