Crank but no fire
12-08-2018, 11:16 AM
#1
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Crank but no fire
2004 f150 heritage 4.2 automatic... will crank but wont start replaced battery, starter relay, starter, coil pack, plugs and wires, swapped out relays for others that are the same still wont start dont know why any help would be appreciated
12-08-2018, 02:55 PM
#3
Senior Member
Sounds like you’re tossing money away at guesses. Are you getting fuel and fire? Two things to check....
Just because you changed all that stuff doesn’t mean you’re getting fire. A spark tester will help. If you have fire, move on to checking fuel. Check for voltage with a meter.
Just because you changed all that stuff doesn’t mean you’re getting fire. A spark tester will help. If you have fire, move on to checking fuel. Check for voltage with a meter.
12-09-2018, 12:15 AM
#5
Have ya checked to see if your fuel pump module is still intact above the spare tire?
These modules corrode bad & fall apart.
The 4.6/5.4 have the module above the spare tire so I assume the 4.2 would also.
.
These modules corrode bad & fall apart.
The 4.6/5.4 have the module above the spare tire so I assume the 4.2 would also.
.
12-09-2018, 09:33 AM
#6
Senior Member
12-09-2018, 10:11 AM
#7
Senior Member
Could be the PATS system.
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12-09-2018, 10:31 AM
#8
Mark
iTrader: (1)
Why not troubleshoot properly before tossing parts at it.. easy to see if you are getting fuel and spark. You stated it will crank but, you replace starter/battery ? That don’t make sense.
