2011 F-650 Problems
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5th Gear
Joined: Nov 2023
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2011 F-650 Problems
Hi All - purchased a 2011 F-650 from a resell dealer. After driving off the lot, noticed caliper was sticking and check engine light on. Took it back, and long story short, 7 weeks later they say they got everything fixed. Had 3 senior diesel mechanics at the resell dealer, then the Ford dealer mechanics working on it. Ended up needing the Wabco unit (expensive!), part of the braking system, replaced, along with the front calipers. Also, there was multiple issues with the DEF system not holding pressure properly, and then trying to derate the engine constantly. Several pieces within it were replaced. Shipped it up to me and it seems all has been resolved. Driven it about 150miles on a couple trips since Ive had it and all seems well. Until today.
I had it on highway today doing about 60mph, and all of sudden, I lost all power. Gas pedal to the floor and mph dropped near 0 and rpm down to idle. Just made it to the shoulder. Few minutes after shutting it off, restarted it, and it continued on back to our yard with no more issues. Any idea what could cause this? Was thinking a loose ground cable maybe? No check engine or other lights came on.
I had it on highway today doing about 60mph, and all of sudden, I lost all power. Gas pedal to the floor and mph dropped near 0 and rpm down to idle. Just made it to the shoulder. Few minutes after shutting it off, restarted it, and it continued on back to our yard with no more issues. Any idea what could cause this? Was thinking a loose ground cable maybe? No check engine or other lights came on.
Last edited by ftruck650; Nov 16, 2023 at 05:44 PM.
More Turbo
Joined: Jun 2009
Posts: 580
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From: Michigan
You need scan data and codes to diagnose it, anything else is just a guess and as I tell everybody guessing is expensive. I've fixed many driveability problems and never found a ground problem, I did it for a living.
More Turbo
Joined: Jun 2009
Posts: 580
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From: Michigan
Usually trucks over 1 ton use a round connector for the engine, the OBDII port is usually just for the body or can-bus system. So I don't think a common type scanner will pull up engine codes. If it did work that would be the first time I've known it to.
Hotshot
Joined: Jul 2013
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may have changed, my 2019 f-450 uses a standard obdc2 and so did my prior 2010 f-450 and prior f-350drw
More Turbo
Joined: Jun 2009
Posts: 580
Likes: 58
From: Michigan
450's and 550's are all the standard OBDII port, go up to the 650's with a CAT they use the round connector. The GM 4500-5500 use the round connector.
I'm not sure what the OP's truck has because I haven't worked on a 2011+ yet, it's possible that he has the Common OBDII connector.
OP Let us know what connector you have. Maybe look at Forsan and see if a F750 is in there, if it is then you should be able to scan it.
I'm not sure what the OP's truck has because I haven't worked on a 2011+ yet, it's possible that he has the Common OBDII connector.
OP Let us know what connector you have. Maybe look at Forsan and see if a F750 is in there, if it is then you should be able to scan it.
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5th Gear
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Thats correct. Mine has both ports. The OBDII wasnt showing any codes. Will find out if the round plug reader shows anything today when a mechanic down the street brings over his HD scanner.
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5th Gear
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Took it for a ride this past weekend. Seems fine under 45-50mph. When I open it up on the highway, thats when problems emerge. Struggles to get past that 45-50 range, and steering wheel shakes a bit. Pull over to the side, pump the brakes a few times as it seemed to come to a harder stop instead of rolling out, then its a 50/50 shot on the next acceleration if it will get passed the 50mph mark. As mentioned, I know it used to have a sticking caliper but that doesnt seem to be it anymore. No smoke, no pulling to one side, no burning smell. And calipers, hoses, and Wabco unit was replaced on the front brakes anyways. After the second time pulling over, it ran fine all the way back to shop, and was doing 65-70mph.
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