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largest odometer reading seen 4.6 vs 5.4?

  #31  
Old 06-29-2007, 03:49 AM
mudbuggy
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I have a 97 F150 ex cab 4x4 with 292,000 mi, just reg maint done on the engine have changed the rear end once and the shift motor on the transfer case, and rebuilt the front end
 
  #32  
Old 07-06-2007, 11:14 PM
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my 97 4x4 4.6 has about 160k with no major work done, had to have new ring and pinion put in a couple years ago but thats the biggest problem, still runs perfect, no problems and doesnt use any oil!
 
  #33  
Old 07-07-2007, 03:59 AM
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190,000 Miles

My 98 F-150 turned 190,000 miles today. I'll make the 200,000 mile club before the end of the year. Still runs good and I plan to keep it a while longer. I beleive I'll go change my oil now.
 
  #34  
Old 07-09-2007, 09:28 AM
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My Dad's 97 E250 5.4 just hit 374,000 miles yesterday. Still running great with the original motor and tranny.
 
  #35  
Old 07-10-2007, 11:50 PM
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4.6 and 5.4 are so simliar, I'd say there's no difference in longevity.

I worked for a guy who ran 30 various F150s. V6, 4.6 and 5.4s. These trucks had hardly ANY maintenance but regularly ran 300-400 000 km. (250 000 miles).

Most were lucky to even get semi-regular oil changes and tended to blow transmissions WAY before engines. I don't really recall any problems with engines.

And these trucks are driven HARD!! My run at one point included two 30 km (20 mile) blasts across the city with the return run (full load) at the limiter (100 mph) for 15 minutes straight. EVERY DAY!

Lot's of balljoints, brake rotors, trannys, etc but hardly ever an engine failure. And I'd attribute most of the tranny failures to abuse as more than a few of the drivers would leave driveways sideways!

I know one dealer that ran a van with the 4.6 and it was recently replaced after over 600 000 km (400 000 miles) on it. I don't know the history of this van but apparently it was the original driveline. Now I also know the driver well enough to know he took care of it. (No abuse).

Of course we all hear the bad side too , but in general I've known these motors as dead reliable.
 

Last edited by DenDanger; 07-10-2007 at 11:53 PM.
  #36  
Old 07-13-2007, 02:24 PM
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206,000+ on mine, normal maintenance and other little things
 
  #37  
Old 12-26-2007, 02:35 PM
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my 2001 E250

has 254,xxx on it. Vacuum problem showing up now. I blew a line off and now it runs rough after clamoing it back on.

Any thoughts
 
  #38  
Old 12-26-2007, 06:15 PM
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What line blew off? Sounds like the usual PCV hose elbow gone bad.
 
  #39  
Old 12-26-2007, 06:51 PM
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Yeah probably just a bad PCV hose, my PCV elbows went bad. I couldnt find elbows anywhere, so i just used normal vaccum hose with hose clamps and it works fine.

One thing people should put into consideration is if there speedo/odometer is off. Like mine is off about 9% with my 265/75 compared to the stock 255/70. My truck actually has close to 230,000 miles on it, due to the speedo being off for soo long. Just something for people with bigger than org. tires to think about.
 
  #40  
Old 12-26-2007, 07:23 PM
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247,000 miles on a 5.4 2000 E-250, and it just went 29,000 miles between oil changes… ya, driver just about lost his job.
 
  #41  
Old 12-26-2007, 08:03 PM
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What line blew off? one of two off the vacuum unit

The line that blew off was the [from the drivers seat] on the left, the line at the front one of two coming off what looks like a vacuum unit pan. The unit has two nipples pointing down.
Its about a 6 inch piece of rubber hose that goes into a hard line that looks like it goes down toward the tranny. I will check the pvc elbow. I did change the pvc valve after I imagined the motor having a "breathing problem".


Originally Posted by LxMan1
What line blew off? Sounds like the usual PCV hose elbow gone bad.
 
  #42  
Old 12-26-2007, 09:10 PM
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Check the elbow that connects to the rear of the intake manifold. It seems to get more heat and thus fails sooner that the one actually on the PCV valve itself.
 
  #43  
Old 12-26-2007, 10:54 PM
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I will check the other end of that hose. I asked at Ford service today and they all looked at me with a blank stare. NO one seemed to know anything about vacuum. You guys have been 100% more help
 
  #44  
Old 12-28-2007, 04:42 PM
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Originally Posted by LxMan1
Check the elbow that connects to the rear of the intake manifold. It seems to get more heat and thus fails sooner that the one actually on the PCV valve itself.
Great suggestion, I got the whole hose assembly from Ford it was a snap to install. It came with a plastic PVC valve as well so I used that too. I picked it up about 25 miles from my home base and ran it back on the hi-way, I noticed the difference immediatly. I guess mine wasn't on snug or perhaps my hose had a crack in it or something, I will have to inspect it closer.
I changed my fuel filter too just to follow through on "smoothness". Next is tranny fluid and all plugs.

Thanks again, you were a great help
 
  #45  
Old 12-28-2007, 06:10 PM
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my 98 has 165000 and counting. strong as ever
 

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