Reverse issue
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Veteran
Joined: Aug 2007
Posts: 250
Likes: 3
From: Phoenix, Arizona
Reverse issue
I have an issue with the reverse gear (or not) in my tranny.
Transmission was recently rebuild, but now when the truck is cold and right after starting I put in reverse. It sounds like its not engaging. I get loud cavitation noise (sort of loud humming noise) coming from the tranny. It really happens when the truck is cold and right after start (for a few minutes).
Truck will roll in the reverse but it seems like its having hard time pulling backwards. Once the truck is warm and I drove few miles it seems all good. But the noise after start drives me nuts!
Forward gears are all good - no issue there
What could it be?
Bad gear shift switch in the tranny?
Too high or too low fluid level?
Something else wrong with the tranny?
Maybe some adjustment is necessary
Any input appreciated
THX
Transmission was recently rebuild, but now when the truck is cold and right after starting I put in reverse. It sounds like its not engaging. I get loud cavitation noise (sort of loud humming noise) coming from the tranny. It really happens when the truck is cold and right after start (for a few minutes).
Truck will roll in the reverse but it seems like its having hard time pulling backwards. Once the truck is warm and I drove few miles it seems all good. But the noise after start drives me nuts!
Forward gears are all good - no issue there
What could it be?
Bad gear shift switch in the tranny?
Too high or too low fluid level?
Something else wrong with the tranny?
Maybe some adjustment is necessary
Any input appreciated
THX
Grand Champion
Joined: Apr 2010
Posts: 5,011
Likes: 6
From: Meeker, CO
I'd take it back to the shop straight away.
Just guessing, and NOT suggesting that the shop should be let off the hook: It sounds like the shop remove the check valve, which is a good thing BUT it will allow the torque converter to drain when the engine's shut off.
If the shop says the thing checks out and confirms that the check valve was removed (as it should have been), you can either get used to the idea of running the truck in neutral for 20-30 seconds after a cold start before selecting any gear, or installing a remote ATF filter. A remote ATF filter is just an engine oil filter so it will have a built-in anti-drainback valve that will work just like the factory piece that was properly removed, but is much less likely to stick and smoke your transmission, and it's also very easy to replace -- just change the remote filter and you get a brand new valve, too. And as an additional benefit, your transmission will last a helluva lot longer with that remote filter in place.
First things first: back to the shop.
Good luck with it.
Just guessing, and NOT suggesting that the shop should be let off the hook: It sounds like the shop remove the check valve, which is a good thing BUT it will allow the torque converter to drain when the engine's shut off.
If the shop says the thing checks out and confirms that the check valve was removed (as it should have been), you can either get used to the idea of running the truck in neutral for 20-30 seconds after a cold start before selecting any gear, or installing a remote ATF filter. A remote ATF filter is just an engine oil filter so it will have a built-in anti-drainback valve that will work just like the factory piece that was properly removed, but is much less likely to stick and smoke your transmission, and it's also very easy to replace -- just change the remote filter and you get a brand new valve, too. And as an additional benefit, your transmission will last a helluva lot longer with that remote filter in place.
First things first: back to the shop.
Good luck with it.
