Exhaust manifold bolts are failing, causing leaks that could cause potential fire. Also exhaust leaks before the catalytic converter, emission control.
2015 Ford F-150 engine complaints
Page 6 of 11: complaints 131 to 160 of 284, newest first, as owners wrote them.
Failing Exhaust manifold and studs
Repeatedly faulty exhaust manifold stud bolts. They continue to break.
The contact owns a 2015 Ford F-150. The contact stated that upon starting the vehicle, the low oil level warning light appeared on the instrument panel. The warning light disappeared; however, an abnormal, rattling noise was coming from the vehicle at start-up. The contact believed that the failure was linked to a defective camshaft phaser. The dealer and the manufacturer were notified of the failure and informed the contact that there were no recalls on the VIN. The manufacturer referred the contact to the federal safety agency Hotline. The vehicle was not repaired. The failure mileage was approximately 100,000.
Engine shutting off at stop this is not the auto shut off model, this has happened 3 times and many other owners have already contacted Ford about recall
The contact owns a 2015 Ford F-150. The contact stated that after starting the vehicle, the engine coolant temperature and the check engine warning lights illuminated intermittently. The contact stated that the failure had become frequent. After using a personal diagnostic reader, he retrieved two failure codes for the engine coolant temperature (ECT) sensor circuit. The vehicle was then taken to an independent mechanic where it was diagnosed that the knock sensor wiring harness, coolant sensors, and fuel seals needed to be replaced. The vehicle was repaired. The manufacturer was made aware of the failure and confirmed that there was no recall under VIN and advised the contact to file a complaint with the federal safety agency Hotline. The approximate failure mileage was 72,000.
Exhaust Manifolds warping. This issue is not only very disappointing that Ford hasn't addressed this issue but is a safety concern as well. This allows exhaust fumes to escape not only into the air but potentially inside the cab. This could result in serious lung issues and needs to be addressed. Thank you!
Manifold bolts broken causing an exhaust leak inside vehicle.
My Ford dealer replaced the defective throttle body on my 2015 F150 Ford truck. I was charged for the repair and Ford advised me that the extended warranty on this component did not apply to my vehicle. My trucks engine completely shut down while I was driving. I was very luck I was on a back road and was able to coast until it was safe to pull off the road. After restarting my truck, in a few miles, it did the same thing. Again, I was very lucky to still be on a back road and able to coast to a safe spot to pull off the road. I restarted the truck and made it to my Ford dealer a few miles away without further incident. Both times my truck engine quit, there was a warning light on the dash board that lite during the event. I believe it said “maintenance required” but not sure. I was preoccupied looking for a safe place to pull off the road. No warning came before the event. This engine shutdown could have put myself and others in danger had it occurred on the freeway.
Truck sporatically fails to start or motor shuts down within five minutes of driving. Starter remains ingaged even in run position, needs to be cycled to off position to dissengage. After cooling at least 10 minutes truck usually starts and runs normally for a few days until it does it again. Dealer cannot find anything wrong and refuses to look any further. Shuting down at speed on the road safety hazard. Almost impossible to stear or break after engine shutdown. No engine codes or warning lamps.
My vehicle has a factory feature called "Hill Decent Control". this past week I have been getting a Default Message "Hill Decent default" and the accelerator pedal stops working. This has happened in the middle of the road (in traffic) for no apparent reason, where I have to stop the vehicle, turn off the engine, then restart. I have read on line where other Ford F-150s have experienced this same issue. I contacted ford, and they said they have no Recalls or TSB's regarding this unsafe issue. I now need to find a reputable shop to diagnosis the exact cause and repair needed.
The exhaust manifold rear stud broke causing leaking emissions to potentially be released into the cab of the vehicle putting the driver and any passengers at risk. This is a known problem with Ford's 3.5L twin turbo eco-boost engines and they are failing to recognize this problem. It has been confirmed that this is the issue and no other entity has been involved in this issue. There is no, nor has been any warning lamps or messages with this issue. It is available to be inspected if needed.
Manifold bolts have failed my 3.5L Ecoboost. Fumes are consistently entering the cabin area because they are warped and leaking. It seems like a carbon monoxide safety issue. It is definately an engineering failure because of the configuration of the bolt pattern. I understand that it is a common problem for that engine.
The contact owns a 2015 Ford F-150. The contact stated while driving 35 MPH, the check engine warning light and service engine warning light illuminated. Additionally, the "Uphill Assist Not Available" and "Advance Service Tract Not Available" messages were displayed. The contact stated that the vehicle idled and was running rough while depressing the accelerator pedal. The contact turned off and restarted the vehicle. The vehicle continued to run rough for 5 minutes and the contact continued driving; however, the failure reoccurred twice within 15 minutes on that same day. The dealer and the manufacturer were not notified of the failure. The vehicle was not diagnosed or repaired. The failure mileage was approximately 111,000.
The contact owns a 2015 Ford F-150. The contact stated while driving 35 MPH, an abnormal banging and crackling sound was coming from the engine. There was no warning light illuminated. The contact was able to coast the vehicle to an independent mechanic and upon inspection, the mechanic determined that the vehicle had experienced engine failure. The contact was then referred to the dealer for assistance by the independent mechanic. The contact initially called North Country Ford (10401 Woodcrest Dr NW, Coon Rapids, MN) and was given a six-week estimate for an appointment. The contact then called another dealer and was given a three-week estimate for an appointment. The vehicle was then towed to that dealer where the vehicle was diagnosed with engine failure. The contact was also informed that the main engine bearing along with both turbochargers needed to be replaced. The manufacturer had been notified of the failure but offered no assistance. The vehicle had yet to be repaired. The failure mileage was 79,689. The consumer stated the vehicle was traded in for a Dodge Ram.
After the dealer performed the 100k major service the engine began, periodically, to stall. The stall could occur while stopped (at a light or to make turn), while in park and only idling, or when the vehicle was in motion at less than 25 mph. If it stalled while starting a turn, then there was a serious risk of major collision from oncoming traffic. In said turn, more than a reasonable amount of time or distance was allowed to make the turn safely. However, if the oncoming vehicle did not recognized the vehicle was stalling, or had otherwise failed to properly evaluate the situation early enough then a collision would be likely. A scan of multiple Internet web sites found thousands of people, with model years before and after my vehicle, having the same or similar issue.
When I come to a stop, either at a red light or stop sign, and I have my foot on the brake, and come to a complete stop. The engine would idle rough and then would either die on me, or if I have time, I would put the driver selector switch into neutral and give it some gas before the engine quits. I have a OBD2 reader for my IPad, and when this happens, usually the codes P0365, or P0369 occur. I have had my truck into the shop numerous times to get fixed, and they have replaced the Cam Sensor for those P0365, and P0369 codes, but the problem still exists.
The oil pan is leaking oil and this is a prevalent problem with 2015 through 2021 years of many Ford models. The leaked oil can and is running back onto the vehicle under carrage and is a fire potential when coating the exhaust system which has high heat during operation. The problem has been reproduced and is recognized by the manufacturer. The later model years have had a redesign to attempt to correct the issue however the earlier 2015 - 2017 nothing has been done No warnings or messages are given that this issue is present. Some vehicles have had this repaired at significant cost as many as 3 times only for the issue to reappear again.
Just replace electronic throttle body for SECOND time at 106,185 miles. First time was at 38,460 miles. Both times replaced by Ford dealer at my expense. Recently contacted Ford with no response yet. THIS IS A MAJOR SAFETY ISSUE. TRUCK STALLS WITHOUT ANY WARNING. VERY DANGEROUS. I have never replaced a throttle body on any other vehicle I have owned in 45 years of driving!!
The headers are warped accoding to the Ford service garage which is a common ecoboost problem. Could cause carbon monoxide poisoning.
While driving, both around town and on the highway, all of the gears disappear from the gear cluster and when this happens my vehicle will not shift out of the gear that it is in. When pressing the gas pedal, I have had nothing happen and the vehicle shift unexpectedly or not shift at all. Instead of accelerating, it caused the rpm's to redline and I nearly went into the wall while on the highway. If the truck is turned off while the numbered gears on the cluster have disappeared then I have had problems trying to restart the truck. The truck will also have a warning pop up to "see manual" and warn you that the blind spot detection is offline. This problem has nearly caused me to be in several severe accidents and serious enough for me to spend the time typing this complaint. After diagnosis at Ford, they relayed that it is the molded lead frame for the transmission and that there are a few years models of f150 with this recall but not the 2015 year model.
Coolant line to turbo is leaking
My turbo lines and vacuum pump are leaking coolant
The contact owns a 2015 Ford F-150. The contact stated that while the vehicle was parked, unattended the vehicle caught fire without warning. The contact was able to extinguish the fire. There were no reported injuries. The vehicle was towed to an independent lot. The contact called the local dealer but, the vehicle was not diagnosed or repaired. A police report was filed. The manufacturer was not contacted. The failure mileage was approximately 119,925.
The Engine locked, up the check engine light came on and the truck was running a little rough. I stopped turned off the engine, restarted the truck the light went off light. I drove another 40 or so miles light flashed and engine stopped got towed to dealer and was informed engine was locked up. Truck has a little less than 90000 miles and has been maintained.
Exhaust manifolds have warped on both sides of the engine. The bolt holding the exhaust manifold has broken and caused an exhaust leak.
Went into 'limp mode'. Advance track, hill descent warnings. Wouldn't throttle. stopped going downhill. Known Throttle Block problem.
I was driving on a city street at about 30mph up a slight incline when the truck just seem to shut off. But it didn't die, the engine was still running but barely. It was running very rough, like miss firing on several cylinders. It would not accelerate, no change of engine sound or power, the throttle was totally unresponsive. It also felt as if the brakes were being applied slightly. A message came on the dash saying something about hill assist and another wrench message. I had no chose but to pull over in traffic before it quit. This was on or about July 18 then again today on July 26. This time I was one a city street down to one lane due to construction. I was barely able to make it to a turn off before it totally quit moving, with traffic backed up behind me. I shut off the engine to let the computer reboot and got a message that hill assist was now off. After a longer than normal crank time it started and ran ok. I called Stivers Ford to make an appointment and was told it was probably a fluke, and wait and see if it did it again. I now have an appointment for August 4 to have it checked. I went on Google after the first time and found many complaints about the same situations, but with no fixes. If this were to happen under the right circumstances it could be very serious. I'm a recently retired auto technician , and shop owner of 48 years. I understand the difficulty in finding intermittent failures. But after reading all the same symtoms in Ford pickups for years it seems there should be more done from the manufacturer to address this problem.
While driving on the freeway the truck completely lost throttle, note electrical stayed and engine idled roughly during this time. Had to emergently pull to the side of the freeway while the truck coasted nearly causing several accidents and people swerved around the truck. Since this initial incident this has happened approximately 15 times on various roads and in intersections. Dealership is saying that some of the electronic throttle bodies (TSB 16-0139) were defective which causes this issue.
Sounds like an exhaust leak near the turbo possibly at the manifold. It is very loud and can tell there is a significant loss of power.
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