Any advice
#1
Any advice
I have an 05 f150 5.4 driving up Rd I lose power could only go about 20 in a 65 yippie. I limped it to O'Reilly the put it on computer and said cylinder 5-7-8 misfire so I change all 8 plugs and coils and now it will not start turns over but won't start any advise would be greatly appreciated thanks
#2
Senior Member
You need to check for fuel pressure.
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Mrjr1371 (07-20-2019)
#3
Senior Member
Check condition of the FPDM.
On driver's side frame rail above rear axle.
Easier to access and view with spare tire lowered.
On driver's side frame rail above rear axle.
Easier to access and view with spare tire lowered.
#4
#5
Senior Member
I had this problem years ago while driving in Mexico. Turned out I was burning Mexican leaded gas and didn't know it. It clogged the catalytic convertors and was creating back pressure that caused misfires. A mechanic loaned me a hammer and cold chisel and I punched some holes in the convertors, all the beads fell out and the truck ran fine. This was the early 80's, pre-OBDII. I've since been told convertors can do this without leaded gas. They don't last forever although this was the only convertor problem I've had.
#6
#7
Senior Member
If you're familiar with the fuel pump reset button, check it. A little hard to access but not impossible.
Located in passenger side footwell fuse block - upper left area.
Use a cellphone camera to aid you.
Did the initial loss of power happen all of sudden?
Located in passenger side footwell fuse block - upper left area.
Use a cellphone camera to aid you.
Did the initial loss of power happen all of sudden?
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#8
But I will definitely check that though thank u