2002 Ford F150 hard starting

2002 FORD F-150
111,820 MILES • 6 CYL • 2WD • MANUAL
Avatar
CDMASTROS
  • MEMBER
  • 7 POSTS
Ford F150 has intermittent hard start. Takes 3-4 secs to start and finally ignition it is rough. Has clean injectors, regular maintenance, new wires, and fuel filter. Ohmed the coil. Im affraid the pump is bad. Could the relay cause it, and does it initiate a check engine light?
Feb 8, 2009 at 12:03 PM
Advertisement
Avatar
JACOBANDNICKOLAS
  • CAR REPAIR CONTRIBUTOR
  • 110,190 POSTS
Hi:
The fuel pump can set a random misfire code in the computer. Have you checked it for codes? Also, have you replaced the plugs in addition the the wires?

I would suggest testing fuel pump pressure/ Many part stores will lend or rent the gauge. Here is a video showing how if you have never done it before.

https://www.2carpros.com/dia/test_fuel_pressure.htm

Let me know if this helps.

Joe
Feb 8, 2009 at 7:29 PM
Avatar
CDMASTROS
  • MEMBER
  • 7 POSTS
the plugs have 15,000 on them, i will test the pressure and check the codes. I hear the pump getting power when i turn the key, and being an intermittent problem what is the likely hood of a sensor like the cam shaft pos sensor?
Feb 9, 2009 at 8:07 PM
Avatar
JACOBANDNICKOLAS
  • CAR REPAIR CONTRIBUTOR
  • 110,190 POSTS
Hi:
It could be a sensor. I'm hoping that if it is, there will be a code. Trying to find problems like this can be a pain. The only thing we can do is try one thing at a time.

Joe
Feb 10, 2009 at 11:38 AM
Repair Safety Notice: This information is for general instructional purposes only. Vehicle repair can be dangerous. Verify all information, follow manufacturer service procedures, use proper tools and safety equipment, and consult a qualified repair shop when needed.