Code P0303 on 2001 4.2 issue

Reply Subscribe

Thread Tools

Search this Thread

02-11-2006, 12:11 PM

last_leaf

New User

Thread Starter

Join Date: Feb 2006

Posts: 1

Likes: 0

Received 0 Likes on 0 Posts

Code P0303 on 2001 4.2 issue

2001 F150 4.2 Code come up as P0303 mis-fire on Cyl 3. I've just poped in new plugs and the wires look fine.. Truck idles fine but seems to mis under load. Any thoughts as to what to do next?

Reply Like

02-11-2006, 12:38 PM

skilife17

Elder User

Join Date: Nov 2005

Location: Cottage Grove, Minnesota

Posts: 788

Likes: 0

Received 0 Likes on 0 Posts

last_leaf

Welcome to the site. My truck did the same thing had missfire on Cyl 4. I have a 97 F150 4.6 I replaced both plugs and wires, and it runs great now. Reading what you typed I would suggest by replacing the plug wires. How many miles on the truck. That is just my .02 worth to try and help you.

Reply Like

02-11-2006, 04:05 PM

IB Tim

Site Administrator

Join Date: Jan 2003

Location: 3rd Rock

Posts: 161,998

Likes: 3

Received 58 Likes on 30 Posts

...Welcome last_leaf to Ford Truck Enthusiasts!

We are happy you have chosen the best source for Fords.

Enjoy FTE....and
JOIN CLUB FTE -SUPPORT THE FORUMS!
…..See you on the boards.