4.6L Engine review (Miles & Problems) - F150online Forums


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4.6L Engine review (Miles & Problems)

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  #1  
Old 08-25-2003, 05:31 PM
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4.6L Engine review (Miles & Problems)

4.6L owners-

If you don't mind sharing, please update this page with how many miles your 4.6L V-8 powered vehicle has on it, and what type of engine problems, if any, you have had with it.

Miles Problems
1999 SuperCab Flareside- 25,000 miles None
2000 Expedition XLT Sp- 34,000 miles None
2001 SuperCrew XLT- 25,000 miles Dirty Oxygen Sensor tripped check engine light. Replaced. No other trouble.
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  #2  
Old 08-25-2003, 07:50 PM
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1999 Expedition XLT 4x4 4.6, 65,000 miles:

IAC replacement

starter solenoid replacement

That's it.
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  #3  
Old 08-25-2003, 11:21 PM
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97 F-150 Lariat - 106,000 miles, No major problems. Just replaced heater core.
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  #4  
Old 08-26-2003, 12:04 AM
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98 expedition

Expedition 62000 miles 4.6

Right bank runs lean, constantly pinging/detonating
replaced plugs because were worn to nothing on right bank
It's a big turd and hate it now
Constant clunking from front and rear suspension.
Don't think I'll buy another expedition

I have a 93 F-150 and has never had any problems with 92000 on it.
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  #5  
Old 09-01-2003, 09:38 AM
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A little late, but here goes...

2001 Expy 4.6L, 23,5xx miles - replaced #5 coil, EGR recall (I hope. She goes in tomorrow with an EGR Excessive Flow code)

1997 Thunderbird 4.6L Sport, 57,6xx miles - IAC replaced right at 50k

All in all, I am happy with the 4.6. It doesn't tow terribly well. But some 3.73s and a tranny cooler should fix that.
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  #6  
Old 09-03-2003, 12:34 AM
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153,000 on my 1997 4.6 and absolutely zero problems, either with engine or vehicle as a whole.
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  #7  
Old 09-08-2003, 09:26 PM
dee
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I have a 99, with 84,000 or so and all i have had was plugs and wires. , my gas gage is not working the way it should. O ther than that it is a nice rig.
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  #8  
Old 11-19-2005, 08:36 AM
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98 expy 150,000 some probs

98 150,000 4.6 xlt
i love my truck although we have had our share of probs.
Starter selanoid
a/c compressor
transmission rebuilt
now the friggin heating core
Like i said love the truck but DANG is this normal
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  #9  
Old 11-19-2005, 12:30 PM
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1998 Expy 4.6L

144,xxx. Nothing major that I ever knew of done to it.
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  #10  
Old 11-19-2005, 01:47 PM
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1992 Lincoln Towncar with 170,000 miles. Valve seals leak and cause a puff of blue smoke after idling for a while. This was a problem for all early 4.6 sohc engines but I bet that is fixed on recent examples otherwise a great engine.
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  #11  
Old 11-19-2005, 01:56 PM
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1992 Lincoln Towncar with 170,000 miles. Valve seals leak and cause a puff of blue smoke after idling for a while. This was a problem for all early 4.6 sohc engines but I bet that is fixed on recent examples otherwise a great engine.
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  #12  
Old 11-21-2005, 07:03 PM
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Update: My 1999 4.6 Expy has 89,000 miles on it now, and I replaced plugs and wires at about 75,000 to cure a miss and flashing CEL. Problem cured, engine back to normal, no other engine issues since.
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  #13  
Old 11-23-2005, 07:01 PM
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Thumbs up

'98 Expy 4.6 - 95,000 miles

So far:
IAC replaced
EGR replaced
Heater Core replaced
Currently has minor exhaust leak on right side manifold (not bad enough to fix right now)
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  #14  
Old 11-27-2005, 10:42 AM
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02 Mountaineer 4.6 V-8 with 41,000

--Rough idle, fixed with new plugs and wires
--1 transmision replaced, the newer one has been re-built now
-- knocking at idle (I think it's just bad gas, as I never heard it when I brought it

The engine has been great considering those 3 things
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  #15  
Old 12-02-2005, 09:19 PM
dee
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99 expedition 4.6 109,000 now up to 2 sets of wires and plugs and now it runs like crap, took to get it looked at and was told i need a new engine!! I was told that when you have to jack the boby off the frame to remove the engine. 20 hours of laber, with a used engine the cost would be around $4000! So i really used to like the truck, but i have just been putting too much money in it. I will have to take it some place else for a 2nd look. Anybody know if you really have to lift the body off the frame to reamove engine?
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