Greeting,

I recent had a 2005 RT passed down to me from my 90 year old father in law. 68K miles hadn't been driven in 3-4 years. I did a comprehensive old school maintenance. All plugs, belts, fluids, filters, brake pads, rotors, parking brake shoes, hoses, pcv, trans fluid (Valvoline MaxLife Multi-Vehicle ATF), trans filter and the $30 "dipstick" that Chrysler left out of the build. Almost immediately, I noticed a soft whine that changed with speed. By the time I'm at 25 mph its gone, or I cant hear it anymore. Any thoughts on what could be going on?

Thanks!

 

Probably because you put a one size fits all fluid instead of the specific ATF+4. I know Valvoline lists the NAG1 as one their approved for, but OEM calls for ATF+4. Also, the dipstick was purposely left out because most people (willing to bet you included) don't know how to properly check the fluid level in that trans; it requires tools most people don't have. Just about any dipstick you can buy for it isn't designed to stay in it; if you left the dipstick in that might also cause your problem. If so, pull it out immediately before any or any more damage is done.

 

Also change your tensioner and idler pulley. And oh god, what coolant did you put in it...?

 

I have an OBD II scanner that detects trans temperature, and the fluid level chart. The dipstick is the wire kind that is not meant to be nor has it been left in.

I did change the serp belt and idler/tensioner. I didn't change the coolant as after I tested it, it was in spec.

 

Yes, I saw you changed the belt. Hence why I didn't mention it. At all. Just the tensioner and idler lol.

 

So, I extracted 5 liters of the current fluid and replaced it with Mopar atf+4. That's about 40% of what's in the trans. She still whines.