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2003 Ford F-150 problems with engine and 4X4

Tiny
PRESTON HESTER JR.
  • MEMBER
  • 2003 FORD F-150
  • V8
  • 4WD
  • AUTOMATIC
  • 103,000 MILES
When driving at times my F-150 would start jerking for a couple of seconds, around 30-40 mph. I had the transmission flush and service there was no problems noticed.

The 4x4 will not engage. I turn the knob to 4x4 L or High and nothing happen. I have check and tested all the fuses they were ok.
need help please, thanks you
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Friday, October 15th, 2010 AT 1:59 PM

3 Replies

Tiny
RASMATAZ
  • MECHANIC
  • 75,992 POSTS
Hi Preston Hester Jr., Welcome to 2carpros and TY for the donation.

Jerking problem: check the fuel pressure, clean the MAF sensor with an electronic cleaner CRC and test throttle position sensor

As for the no 4WD: check fuse no.104 30amp if okay one of the following below is causing your problem


http://www.2carpros.com/forum/automotive_pictures/12900_relay_and_module_1.jpg

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Friday, October 15th, 2010 AT 7:33 PM
Tiny
PRESTON HESTER JR.
  • MEMBER
  • 1 POST
I'm sorry but I know very littler about vehicles. Where do I find the MAF sensor. Thanks
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Friday, October 15th, 2010 AT 9:29 PM
Tiny
RASMATAZ
  • MECHANIC
  • 75,992 POSTS
Its in the air cleaner


http://www.2carpros.com/forum/automotive_pictures/12900_maf_1.gif

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Saturday, October 16th, 2010 AT 2:29 PM

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