2011+ 55-60mph 5.0 Shuddering and EcoBoost Engine Miss/Loss of Power - Possible Fixes - Page 250 - Ford F150 Forum - Community of Ford Truck Fans



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2011+ 55-60mph 5.0 Shuddering and EcoBoost Engine Miss/Loss of Power - Possible Fixes

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Old 03-17-2013, 09:00 PM   #2491
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New IC installed with new flash lets see if the problem goes away
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Old 03-17-2013, 10:40 PM   #2492
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I was having this problem. Put a new set of plugs in all gapped to .030 and problem is gone. Nice and smooth all the way up the powerband now.
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Old 03-18-2013, 04:02 PM   #2493
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Naw, the temperature dropped 30 degrees yesterday. I've been on the same tank all week.
All my issues happen below 50 degrees...sounds like maybe we have something similar going on.

I tried new plugs...might try a different brand and see what happens. Was too cold this weekend though, and cold all week.

Haven't got the truck to miss again yet on hard acceleration but it doesn't accelerate smooth anymore and still seems to be lacking major power.

I'll try switching out one more time then to the dealer again, then who knows what.

Still just seems as if the BOV is stuck open and just releases a large volume of boost during accelereation.
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Old 03-18-2013, 07:51 PM   #2494
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All my issues happen below 50 degrees...sounds like maybe we have something similar going on.

I tried new plugs...might try a different brand and see what happens. Was too cold this weekend though, and cold all week.

Haven't got the truck to miss again yet on hard acceleration but it doesn't accelerate smooth anymore and still seems to be lacking major power.

I'll try switching out one more time then to the dealer again, then who knows what.

Still just seems as if the BOV is stuck open and just releases a large volume of boost during accelereation.
Hey maple, do you think it's possibly acting up because you have been driving it very conservative? I ask because I tried to accelerate really hard Saturday and my truck just felt weak, just like any truck with a n/a engine that I driven before. But when I drive again Saturday night it would fly again. I don't accelerate in my very hard because I do alot of city driving. Don't know if this is your problem but its just a thought.
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Old 03-18-2013, 10:31 PM   #2495
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Hey maple, do you think it's possibly acting up because you have been driving it very conservative? I ask because I tried to accelerate really hard Saturday and my truck just felt weak, just like any truck with a n/a engine that I driven before. But when I drive again Saturday night it would fly again. I don't accelerate in my very hard because I do alot of city driving. Don't know if this is your problem but its just a thought.

Nope, been beating the absolute **** out of it to show people how big of a turd it is right now, as well as hoping one of these times I stomp on the accelerator it implodes.
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Old 03-19-2013, 06:43 PM   #2496
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Nope, been beating the absolute **** out of it to show people how big of a turd it is right now, as well as hoping one of these times I stomp on the accelerator it implodes.
Double post, sorry

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Old 03-19-2013, 07:13 PM   #2497
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Nope, been beating the absolute **** out of it to show people how big of a turd it is right now, as well as hoping one of these times I stomp on the accelerator it implodes.
Oh I'm sorry man, I thought that was a chance of it since mine was like that. I hope ford can finally find a fix for your truck, and you can start to liking it again. I know I really like mine a whole lot, I've drove other makes and I just don't think they're close as these trucks, talking about the whole package, not just the ecoboost.
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Old 03-19-2013, 11:24 PM   #2498
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Is it normal for boost psi to spike upon throttle input and then settle at a lower number? For instance, cruising at 45 mph I give it enough throttle to downshift(say 30% throttle) and the boost will jump to about 8psi then drop to about 5 psi instantly, and steadily drop from there til I near the shift point. I know the drop in boost near a shift is normal, but what about uniform throttle input like I describe? I only got Torque after I started having issues so I don't have readings from a healthy truck.

Just was out driving around and noticed this and wasn't sure if it is normal or not, I apologize if its a dumb question. I'm not super mechanically inclined but trying to do whatever I can to figure my truck out.

Was 14-15 psi about the max people see stock? Will it hold that or is it just a temporary spike? If at WOT what does it settle at?
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Old 03-20-2013, 12:28 AM   #2499
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Is it normal for boost psi to spike upon throttle input and then settle at a lower number? For instance, cruising at 45 mph I give it enough throttle to downshift(say 30% throttle) and the boost will jump to about 8psi then drop to about 5 psi instantly, and steadily drop from there til I near the shift point. I know the drop in boost near a shift is normal, but what about uniform throttle input like I describe? I only got Torque after I started having issues so I don't have readings from a healthy truck.

Just was out driving around and noticed this and wasn't sure if it is normal or not, I apologize if its a dumb question. I'm not super mechanically inclined but trying to do whatever I can to figure my truck out.

Was 14-15 psi about the max people see stock? Will it hold that or is it just a temporary spike? If at WOT what does it settle at?
Stock my truck sees 10.5 pounds of boost. The odd time 12......maybe my high flow filter and muffler with resonater delete have something to do with the low readings.
Also when stock my (and tune) truck seems like it will bleed the boost of when given the right amount of throttle without downshifting.
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Old 03-20-2013, 08:20 AM   #2500
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Torque shows for me under regular acceleration about a steady 3-5psi. Uphill at cruise is 3-5 psi. Acceleration uphill is 8-10. Heavy acceleration is a peak at about 14 and holding to about 9 with fluctuations around gear changes until I take my foot off. Keep up now mind the quality of the adapter affect s read rate and lag time. What torque shows is what happened X seconds or ms back.

And the scenario that you outline seems normal to me. It spikes boost under load then as your acceleration slows the load is reduced leading to lower psi.

Last edited by packplantpath; 03-20-2013 at 08:23 AM.
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