# Ford trucks **URL:** \ **Category:** Maintenance/Repairs\ **Created:** [December 16, 2008, 1:48pm UTC](https://community.cartalk.com/t/ford-trucks/23476 "2008-12-16T13:48:54Z")\ **Posts on this page:** 4\ **Page:** 1
**Author:** ![pantherfan](https://avatars.discourse-cdn.com/v4/letter/p/59ef9b/32.png) [@pantherfan](https://community.cartalk.com/u/pantherfan)\ **Post date:** [December 16, 2008, 1:48pm UTC](https://community.cartalk.com/t/ford-trucks/23476/1 "2008-12-16T13:48:54Z")
I have a 91 F150 4x4 351W automatic,for some time it has been miss firing when I get over 2000 rpm it will buck and jerk while the tach.needle dips I have done a complete tune up checked the sensors and replaced the o2 sensor and fuel filter cleaned the injectors and put in a new ignition switch every thing seems to make it worse. Has anybody else had this problem? ---
**Author:** ![metal249](https://avatars.discourse-cdn.com/v4/letter/m/13edae/32.png) [@metal249](https://community.cartalk.com/u/metal249)\ **Post date:** [December 16, 2008, 1:58pm UTC](https://community.cartalk.com/t/ford-trucks/23476/2 "2008-12-16T13:58:03Z")
In my 64’ Falcon I had the same problem. Turned out to be a weak coil and burnt points. I don’t know exactly how the ignition system works on a 91 ford, but I would think it is an ignition issue. ---
**Author:** ![metal249](https://avatars.discourse-cdn.com/v4/letter/m/13edae/32.png) [@metal249](https://community.cartalk.com/u/metal249)\ **Post date:** [December 16, 2008, 1:58pm UTC](https://community.cartalk.com/t/ford-trucks/23476/3 "2008-12-16T13:58:53Z")
Check the distributor. ---
**Author:** ![pantherfan](https://avatars.discourse-cdn.com/v4/letter/p/59ef9b/32.png) [@pantherfan](https://community.cartalk.com/u/pantherfan)\ **Post date:** [December 16, 2008, 2:03pm UTC](https://community.cartalk.com/t/ford-trucks/23476/4 "2008-12-16T14:03:49Z")
I put a new coil in it along with cap and rotor.But it runs great until it gets over 2000 rpm