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'10 4 cyl engine, tranny issue, hi-rev, no go


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So, I have an issue that is so common now that my 5 year old asks me if my car is going to "get loud and not go" when I pick him up from preschool.

 

I have a 20 mile drive (minimum 30 minutes) from work to his preschool. I turn the car off, collect him, get back into the car, and w/in 1/10th of a mile, get back on the freeway. This is where the problem happens, consistently. The car seems to shudder, revs high, slows down, revs drop, go back up, and then I am able to accelerate. I may not have the order nor all of the events captured correctly, but the car seems to have no power.

 

I am not getting any lights on the dash during this. I mentioned this behavior last time I got an oil change and they said I'd have to make an appointment to get it looked at. I'm wondering if they'll just tell me that they cannot duplicate the issue.

 

I plan on going to the dealership on my way home next week and having a technician go for a ride w/me. They did that for an HVAC squeak I was having months ago. There was a TSB on that issue. Oddly enough, the guy who went for a ride had hearing loss and was unable to hear the issue, but he believed me.

 

Anyway, this isn't as easily reproduced (unless I get the tech to go to my son's preschool).

 

Anyone else having this issue?

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2010 Fusion 2.5L and 3.0L has 6F35 transmission. This transmission is known to cause problems. Symptoms of impending death include a "flare" during 2-3 upshift. This means that changing from 2nd to 3rd gear doesn't happen as quick as it should, so it seems like the car is in neutral, and revs highs, before engaging. Numerous TSBs are out, and it's yet to be determined if Ford has narrowed down the problem.

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2010 Fusion 2.5L and 3.0L has 6F35 transmission. This transmission is known to cause problems. Symptoms of impending death include a "flare" during 2-3 upshift. This means that changing from 2nd to 3rd gear doesn't happen as quick as it should, so it seems like the car is in neutral, and revs highs, before engaging. Numerous TSBs are out, and it's yet to be determined if Ford has narrowed down the problem.

Roger that. I'll take it to the dealership on Monday. My little guy gets nervous on our way home. Thank you for the info.

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Have you had any PCM updates done? I know that they're usually done as part of the Tune Up service at my dealership. There are 4 TSBs that apply to the 6F35 in your model year. 3 of them are PCM updates to help eliminate harsh shifts & flares (including the 2-3 flare that you mention), and one is to correct for harsh shifts (with a couple of DTCs). Your issue may be as simple as a firmware update for the tranny...

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  • 2 weeks later...

I took the car to the shop on 25 March. The "Fixed" the transmission. I failed to ask what they fixed, and I've not had a chance to read the repair order. It is sitting in my car waiting to be read, but work has been bonkers lately, and I just want to spend time w/my kids when I get home.

 

When I get some spare time, I'll see what they did to the transmission. I've only gone the route where I encountered the issue once since the repair, and nothing happened, so I do believe the issue is over, for now.

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