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Hello from OK. Just found this site by searching for answers. I recently traded my 20 XLT for a 19 King Ranch, both with 5.0. Issue is the hesitation and rough gear shifting. My XLT had just started this, My KR has been doing it since I purchased. Any help or answer? TIA
Fleet Mechanic
Joined: Nov 2016
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Is it still under warranty? If so, I'd let the dealership fix it.
There is an update that addresses the transmission shifting.
You could also try a kam reset, but I'm not sure that would be helpful if it has done it since new.
If you bought it used, then the kam reset could possibly help.
There is an update that addresses the transmission shifting.
You could also try a kam reset, but I'm not sure that would be helpful if it has done it since new.
If you bought it used, then the kam reset could possibly help.
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Joined: May 2005
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From: San Antonio, TX
Welcome to FTE bobbyn. We hope you stick around and let us know how things work out.
First, check the transmission fluid level, the dipstick for it is under the truck. Then check for any codes related to your issue. If you find that both are good, this would be my recommendation;
Disconnect the battery then turn on the headlight switch to get rid of any residual voltage in the system. After about 15 minutes, turn off the headlight switch and reinstall the battery. If you have a charger, a good time to top the battery charge is when it's disconnected.
Once you've done that, the truck's adaptive learning will be reset and will now adjust to you. Take it out for about 30 minutes of spirited driving. Drive it hard, but not abusive. Several wide open throttle runs to make the truck shift through all of the gears. I've said it before and I'll say it again. These trucks need to be driven hard once a week or so. If you pull a trailer once or twice a month, that's great too. The 10 speeds don't respond well to babied driving. As matter of fact, It's my opinion that babied driving does more harm than good. A modern 5.0 is a complicated, nearly exotic engine. It's not the low revving pushrod engine behind a 3 or 4 speed automatic like they were decades ago.
I'm not saying that you baby your truck, but the prior owner may very well have. There are still a lot of people out there who believe that running an engine above 2500 RPMs is abuse.
First, check the transmission fluid level, the dipstick for it is under the truck. Then check for any codes related to your issue. If you find that both are good, this would be my recommendation;
Disconnect the battery then turn on the headlight switch to get rid of any residual voltage in the system. After about 15 minutes, turn off the headlight switch and reinstall the battery. If you have a charger, a good time to top the battery charge is when it's disconnected.
Once you've done that, the truck's adaptive learning will be reset and will now adjust to you. Take it out for about 30 minutes of spirited driving. Drive it hard, but not abusive. Several wide open throttle runs to make the truck shift through all of the gears. I've said it before and I'll say it again. These trucks need to be driven hard once a week or so. If you pull a trailer once or twice a month, that's great too. The 10 speeds don't respond well to babied driving. As matter of fact, It's my opinion that babied driving does more harm than good. A modern 5.0 is a complicated, nearly exotic engine. It's not the low revving pushrod engine behind a 3 or 4 speed automatic like they were decades ago.
I'm not saying that you baby your truck, but the prior owner may very well have. There are still a lot of people out there who believe that running an engine above 2500 RPMs is abuse.
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