4R70W Reverse Gear Noise | Ford Explorer Forums - Serious Explorations

  • Register Today It's free!

4R70W Reverse Gear Noise


Well-Known Member
December 3, 2008
Reaction score
City, State
Burtonsville, MD
Year, Model & Trim Level
'98 Limited V8 AWD
I have a 1998 Explorer with a 5.0L engine and 4R70W transmission. When I put it into reverse, it makes a whining noise similar to the noise a locked transfer case makes in 4 low. When it started doing it, it would only make the noise until I gave it gas. Lately it hasn't been stopping when I rev it though. I don't know what the noise means. I hope it doesn't mean a new transmission but its worrying me. :(

Does anybody know what could be causing this?

Thanks :navajo:

I have decided to just drive it down to Florida and rebuild the transmission. It has about 200,000 miles on it anyway which means that ist only a matter of time anyway. If anybody still has some info or advice on the subject, by all means post it.