camaro99

my truck keeps shutting off on me when riving and idling put gas in it one day and now its not running right put new fuel filter and pump in it ran good then started back up looked under the truck the cat was glowing punched the cat out ran good for 2 weeks the same thing cleaned trottle body and new spark plugs no help what else can i try

kalealmighty

boom i know exactly what this is its ur mass air flow sensor!

camaro99

thanks i will try it out do u think it could be the throtle position sensor also

kalealmighty

possably idk tho

BigFoot2364

Quick question..Do you have the inline fuel filter that runs long frame on the underside of truck(usually runs along drivers side) and also is the fuel pump electric inside gas tank? If so, turn ignition switch to accessory position. Get under truck and you should be able to hear gas flowing through fuel filter, or put hands on both ends of fuel line going into fuel filter..should be able to feel the fuel being pushed through..If nothing there..go back to tank and check to hear the in tank fuel pump engaging..it will make like a buzzing sound..If that is working and fuel filter are free flowing..check throttle body. Spray some starter fluid into throttle body. It should fire up and continue to run. The starter fluid will also clean out and deposits or gunk built up inside. This maybe your issue..fuel. But you are saying that teh headlights and blinkers arent working now. Could be that you arent getting enough "juice" to power your throttle body, this not allowing the fuel to be to be pumped through the system. Sounds like you are having an electrical issue...possibly bad battery, alternator, or a ground problem. Good luck, hope this helps you out

88mike

yes he does, ihave 88 f150 5.0L v8, i have the same issue but i probably caused my myself lol runnin open headers...gunna fix it tomorow, will see what happens, since you punched your cat and i have no cat, i could see no backpressure as an issue, somebody said on my post https://www.f150forum.com/f10/truck-...en-dies-42552/

I Will let you know what happens

bstephens00

had a friend once who couldn't keep his truck running after he'd recently gone mudding
the truck would run breifly - stall - and sputter out

The problem was he wasn't getting good (or in his case any) air flow; i pulled his air filter and the truck fired right up and ran great. Considering you were saying that you don't do much in the truck - i doubt you're air filter could have gotten that dirty. That being said though, you may have an intake issue. Something could be preventing airflow and/or effecting your mass air flow sensor and the idle of the truck

good luck

Renee Jackson

My dads ford F150 1996 wont stay running it cranks and cuts right back off and it will start back up and cut right back off. He have tried putting in a fuel filter and checking wiring,putting in a new coral and modular.and Its still doing the same thing.