While driving a brand new 2012 ford f-150 w/ 3.5l v6 eco-boost I was attempting to merge onto interstate while towing a small boat trailer when I lost towing power (RPM dropped instantly from ~4000 to ~2000 RPM despite having accelerator depressed) and the entire truck started violently shaking. This continued until I completely let off the gas for a few seconds. I then pressed down on the accelerator and things were back to normal. I could have easily lost control during the rapid deceleration had the roads been wet or if a big ole 18-wheeler had been behind me things could have ended poorly.
2012 Ford F-150 engine complaints
Page 18 of 18: complaints 491 to 498 of 498, newest first, as owners wrote them.
Brand-new car - 2 days old. Trying to merge into traffic on I-81 at night during light rain. Engine stalled during acceleration attempt while merging from the on-ramp onto right lane of interstate, forcing 18-wheeler to brake to void crushing me. Engine rumbled with very little power getting to the wheels, and recovered to normal driving mode within about one minute. Scariest driving event in my decades of driving. Internet research indicates that this seems to be a common problem with the 3.5l 6-cylinder ecoboost in humid weather, due to condensation in the intercooler being sucked into the engine, when accelerating sharply (such as merging into traffic, lane changes, etc., I.e., when full engine power is really needed). This will lead to fatalities eventually, if not fixed, but there seems to be no fix available from ford.
While driving my 2012 ford f150 4x4 with the ecoboost motor to work on the garden state parkway I experienced the following issue: after cruising for about 20 miles at 65mpg I attempted a pass of slower moving traffic. The truck accelerated to about 80mph during the pass then suddenly the engine lost power and created an engine breaking situation. The trucks' speed dropped rapidly from 80 to 60mph and I had to abruptly move into the slow lane cutting off other cars to avoid being rear ended. As soon as the power/speed loss occurred the truck began to shake violently for about a minute or two until I eventually slowed to about 50mph. This has happened 2 times since owning the vehicle. The truck has 5000 miles presently and has been back to the ford dealership 3 times for software updates, a catalytic converter replacement, to add an air deflector and it continues to throw codes and turn on the check engine light. I got it back yesterday and the check engine light went on again on my drive home. Also mileage seems to becoming progressively worse. I try to avoid passing situations as much as possible in fear the vehicle will create a dangerous situation for myself and other drivers on the garden state parkway.
I was driving in a light rain when I gently pressed the accelerator and the engine started vibrating excessively making the whole truck vibrate like the wheels were falling off. The incident lasted about 10 seconds before it returned to acting normally.
When accelerating the truck bogged. Rpm of engine increase truck did not. Let off gas and depressed truck began to shake violently. Attempting to merge on interstate. Had to pull over and shut truck off to return to normal. This has happened several occasions. I have documented each time it has happened with more details each time. Ford has looked at truck several times. Latest word is that they have a problem, started a tsb however there isn't a fix available. This is very dangerous when driving especially on the interstate when changing lanes or merging from ramp. There is not any warning and scares the devil out of the driver.
While merging into traffic and accelerating, the engine stalled and the truck engine almost died. This has happened numerous times since, mainly when I accelerate quickly as in trying to pass a car. It could easily get someone killed. The dealer cannot duplicate the problem or come up with a fix because there are no codes showing even though the check engine light comes on when this happens I have checked the f150forum.com and its evident that this problem is rampant with this engine..
Tl* the contact owns a 2012 ford f-150 crew cab. The contact stated that the vehicle did not come equipped with covers over the fender wells of the engine. The dealer was notified of the issue who stated to the contact that they no longer offered the feature and that he could purchase one at his expense of $300. The manufacturer was notified of the issue and confirmed the dealer's statement. They offered no further assistance. The failure mileage was 500.
Engine misfire, shudder, bogging. Tsb didnt fix.
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