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Eagle premier 1989 3.0 LTR lx model

I,VE LOST REVERSE GEAR IT USED TO TAKE SOME TIME FOR IT TO ENGAGE BUT WHEN IT DID ENGAGE IT DID NOT SLIP.THEN ONE DAY IT DECIDED NOT TO WORK IS THERE A VACUUM MODULATOR,OR ELECTRONIC MOD. NOW I GET A SLIGHT INCREASE IN IDLE SPEED WHEN ENGAGEING RVRS. GEAR I,M THINKING VACUUM MODULATOR LEAKING BUT I CANT FIND A MECHANIC THAT IS FAMILIAR WITH THIS MAKE. HELP!!!

This was also sold as the Dodge Monaco, so the best I can think of it to go to a Dodge dealership that’s been in businees since the late '80s and see if they can help. It could be tough, these were only sold for a few year and used Renault componenets, not standard Chrysler stuff. Good luck!

Vacuum moduator will not cause reverse to malfunction.

Maybe try a independent transmission shop. Unfortunately your tranny is a Renault design and possibly VW too.