F150TLR Hesitation on Acceleration
I have a 2010 F150TLR that Iíve had since new. Starting mid last year ( about 75 hrs on it at the time) it started to have a hesitation coming off idle when accelerating. It idles at about 700 rpm and the hesitation occurs between that and about 1300 rpm. If I take it out of gear it will accelerate smoothly, no problems at all. Sometimes it will stall, when put into gear, both in forward and reverse. I had the dealer clean the injectors and they checked the engine, found nothing Ė if the computer says nothing is wrong, then nothing is wrong I guess. It made a slight difference when the injectors were cleaned, but still does it. We do a lot of water skiing and that initial acceleration makes a big difference in pulling up the person.
If you slowly accelerate for the first second or two, it runs great, no issues at all. Runs strong all the way to WOT, has no issues at all in starting hot or cold and gas usage is normal. Iíve replace the spark plugs, the ones I pulled out looked like new, replaced the gas filters, water separator, found nothing in any of them. Nothing is blocking the air intake system. Has me stumped.