2007 Ford Fusion

[millerbl00]

I have 2007 Ford Fusion with the FRN5 Transmission. I am not happy with shift quality. I did a "flush" and filter change with Motorcraft FRN5 fluid. I do not care about cost. Should I try Mobil One Full Syn. ATF or Castrol Muilt ATF or just stick with Motorcraft? Is the Mobile One fluid better than the MotorCraft brand?

Thanks

 

[StormRider]

The transmission may need time to "adjust" to the new fluid if you just did the flush/filter change. Also, check for TSB's related to shifting concerns for the Fusions. I know the A/W F21 6 spd equipped Fusions had some TSB's related to harsh shifting that involved a PCM re-flash..

Outside of that, if the fluid you use calls out compatibility with the fluid spec for your trans, then you should be OK..

 

[brandini]

6 speed uses different fluid and is a Aisin.

5 speed FNR5 is made by Mazda, there was at least 1 flash done by the factory for my Mazda 6 (shorter Ford Fusion) so I'd check with your dealer. Also try resetting your computer (unplug battery for 15 minutes, pump brakes, reconnect) to make it re-learn.

 

[millerbl00]

Thanks, Already reflashed. It shifts very hard from 1st to 2nd. The colder it gets the worse it gets. I think next time I will try Mobile One ATF.

 

[brandini]

NO!!! go Amsoil! I have it and the cold shifting only happens the first two 1-2 shifts when it is in the 20s. Also, you should be starting out in 2nd when really cold and 2-3 is problem free. I use the bump shift and keep it at 2k and under 2.5k until the needle starts moving.

 

[millerbl00]

Might try that but when I say cold I mean when you first start the engine. Even if it is 80 outside that first shift is harsh. In fact all gears are harsh about half the time.

Thanks

 

[tig1]

Did you ever get rid of the odor? Last time you posted on your tranny I mentioned I was using M1 ATF and it works well. Because it's a five speed there is a quick shift at low MPH, but I don't notice it being a problem or too harsh. In fact my tranny upshifts and down shifts great. My 07 Fusion has a drain plug so I did two fill and drains the same day. By the way, M1 ATF is compatable with the FNR5 tranny.

 

[millerbl00]

Did not have an odor but had high AL. last UOA. I will use M1 ATF next time.

Thanks

 

[brandini]

Yes even hot days the FIRST 1-2 is a bit funky but it's never harsh... hmmm have you checked all your engine and transmission mounts?

 

[millerbl00]

Yes, they look good. It was so harsh one day I thought I had been hit! I thinks its the torque converter myself....

 

[brandini]

Yea that's not normal at all. I'd take it in asap. I'm at 60K and I've only had 1 transmission issue but thet's just me catching it off guard. If you coast down to a low speed then gun it it'll slam into the lower gear (like when you catch it when it's doing the smooth 3-1 shift).

 

[millerbl00]

Update: I was about 20oz over fill. Drained it and it shifts a lot better now. It was hard to believe 20oz made such a differance. This trans must be touchy to fill level.