pretty bad
Typical Repair Cost:
Average Mileage:
131,615 miles
Total Complaints:
25 complaints

Most Common Solutions:

  1. threaded insert or new head (15 reports)
  2. not sure (9 reports)
  3. was able to put spark plug back in (1 reports)
2004 Ford F-150 engine problems

engine problem

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2004 Ford F-150 Owner Comments (Page 2 of 2)

« Read the previous 20 complaints

problem #5

Jul 022011

F-150 Hertiage 4.6L

  • Automatic transmission
  • 96,000 miles


Passenger side, rear spark plug blow out of hole during weekend drive. Local mechanic had to drill and tap out hole to re-size . Ford has no recall and has not admitted design error with aluminum head and spark plug port being steel. My warranty has expired at 60k. Cost to replace head and new coils for each plug. $550+.

- , Yarmouth, ME, USA

problem #4

Nov 132010

F-150 4.6L V8

  • Automatic transmission
  • 142,000 miles

Never heard of this problem until I researched a bit on-line and realized that this is an epidemic for Ford trucks between 1999 and 2004. I feel violated that Ford will not even consider a fix or warranty solution. It seems to me that they are trying to sweep this under the rug. Being an independent contractor, I need reliable transportation for me and my tools. I have lost money and jobs over this issue.

- , Seattle, WA, USA

problem #3

Dec 142010

F-150 4.6L V8

  • Automatic transmission
  • 142,000 miles

Again! Within a month? A different plug this time but it begs the question: Are the other six going to blow up and when? I can not keep losing time, money and jobs. Not in this economy.... Time for a Toyota?

- , Seattle, WA, USA

problem #2

Apr 062009

F-150 STX 5.4L

  • Automatic transmission
  • 99,419 miles

This is the second time this happened to our truck. The first time we had it repaired the second time we had it fixed up enough to trade it in. AND we will NEVER buy Ford again. as we called head office and they refused to admit there is a problem with the Aluminum head. BULL SH*T. thats twice it happened to us. So they lost a good customer. We will buy Toyota from now on. We just bought a 2009 tacoma and LOVE it, it took a little getting used to the smaller truck, but it is awsome we love it. and all I can say now is "PISS ON FORD." :) thanks for listening

- , Edmonton, AB, Canada

problem #1

Dec 142007

F-150 XLT 4.6L

  • Automatic transmission
  • 54,681 miles

This is a common problem with Ford F150 4.6 and 5.4 engines. Pulls the threads out of the head. There is no rhyme or reason for which cylinder it happens to, at any speed and at any time. It happened to me 400 miles from home at -25 degrees while traveling through the city.

- , Cayuga, ON, Canada

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