2004 Ford F-150 Heritage Repair and Maintenance

A guide to problems, costs, maintenance and repair for your 2004 Ford F-150 Heritage

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2004 Ford F-150 Heritage Problems

One or More Spark Plugs May be Ejectioned From the Cylinder Head

There is a technical service bulletin for the V8 engines regarding a possible problem with the spark plug being ejected from the cylinder head, damaging the threads in the spark plug hole. If the vehicle is under warranty, cylinder head replacement is recommended. If the vehicle is out of warranty, Ford authorized the use of a specific thread insert to repair the head.

Rough Idle Caused By EGR Sensor Sticking

Intermittent rough idle may be caused by the EGR sensor sticking, causing the EGR valve to stay slightly open. Our technicians tell us the valve and sensor must be replaced together to correct this concern.

Engine Misfire Due to Plugged EGR Orifice

On higher mileage vehicles, one or more EGR orifice in the intake manifold may plug with sludge. This can cause the engine to misfire when first accelerating because too much exhaust gas is directed into the cylinders where the orifice is not plugged. Cleaning the clogged passages should correct this concern.

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2004 Ford F-150 Heritage Questions

I have codes po171 & 174 again. (3 answers)

Its been checked with smoke and nothing. It runs great but when im on the hwy for awhile and push the peddle to the floor it just goes flat nothing no power. I changed the fuel filter, plugs and pcv hose it had a hole in it. I reset it and the light comes back in about 10 miles or so. Code 174 al...

P0174 lean bank 2 it was both now just 2? (2 answers)

Reset and it comes back with in 15 to 20 miles. It was 1 and 2 now just 2.

I have codes 171,174 ive changed both o2 sens,maf,pcv and hose,checked for leaks (1 answer)

Im not sure were to go with it now? The truck should run bad but it runs great. Ive reset the codes and any place from 15 to 100 miles I get the check eng lite again with the same codes P0171,P0174 lean bank 1 and 2.

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2004 Ford F-150 Heritage Reviews

I have an increasing problems #1 while just starting off it seem the truck hesitates sounds like the automatic transmission is changing gears then it takes off. #2 connect problem is connected to #1 while traveling at most any speed the trucks sounds like it's laboring or switching gears. If you step on the gas it takes off.
I had just changed my spark plugs and wires on my 2004 ford f-150 Heritage 4.2L V6, now it runs rough and shakes a lot. Never had issues until now, has over 145,000 miles, any help on how to fix this I would appreciate it.
this was the last year for this generation f150.changed the body style this year but still produced the heritage.all the bugs had been worked out in pryor years so i went with it .test drove new body style and i didn't like the ride.had this truck for 5 yrs now,and no problems what so ever.

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