# Truck jerking

**URL:** <https://community.cartalk.com/t/truck-jerking/23541>\
**Category:** Maintenance/Repairs\
**Created:** [December 17, 2008, 10:04pm UTC](https://community.cartalk.com/t/truck-jerking/23541 "2008-12-17T22:04:21Z")\
**Posts on this page:** 2\
**Page:** 1

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**Author:** ![pantherfan](https://avatars.discourse-cdn.com/v4/letter/p/59ef9b/32.png) [@pantherfan](https://community.cartalk.com/u/pantherfan)\
**Post date:** [December 17, 2008, 10:04pm UTC](https://community.cartalk.com/t/truck-jerking/23541/1 "2008-12-17T22:04:21Z")

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My 91 f150 jerks and serges when I get over 2000 rpm.I have performed the following new ignition switch ,new coil, new wires and plugs,new fuel filter, new o2 sensor,transmision fluid and filter change and oil change.HELP!!!

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**Author:** ![hellokit](https://avatars.discourse-cdn.com/v4/letter/h/6a8cbe/32.png) [@hellokit](https://community.cartalk.com/u/hellokit)\
**Post date:** [December 18, 2008, 4:08am UTC](https://community.cartalk.com/t/truck-jerking/23541/2 "2008-12-18T04:08:03Z")

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What about the distributor cap and rotor? The ignition module on Fords is often suspect when things get erratic in the spark department.  
I would wonder if it was running out of fuel. I would put a fuel pressure gauge on it, tape the gauge to the side mirror, drive it, and watch for fuel pressure fall off during exceleration. You?