Tune up (4.6l) - F150online Forums



1997 - 2003 F-150

Tune up (4.6l)

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  #1  
Old 05-10-2009, 09:41 PM
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Tune up (4.6l)

Just bought a 1997 F250 LD for a steal. It has the 4.6 triton that I feel is in dire need of a tune up. I need your guys advice on what should be done.

Plugs (which ones?)
Wires
PCV Valve?
Fuel Filter
Clean MAF
Clean Throttle Body



Prior Owner replaced all fluids and Oil Filter, so I'm fine in that aspect.

Thanks, this forum is great for information
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  #2  
Old 05-10-2009, 09:56 PM
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This may be a dumb question, but are you positive that the motor is a 4.6L? As for tune up parts, you've pretty much hit the nail on the head. I would use either Bosch or Autolite plugs. Hopefully others will chime in to help.
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  #3  
Old 05-10-2009, 10:35 PM
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Yeah, sadly it has the 4.6. I do wish it had the 5.4 for a little bit more oomph. Light Duty 250s had both engines available.
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Old 05-11-2009, 06:43 AM
glc
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No, do NOT use EITHER Bosch or Autolite. Use OEM Motorcraft plugs, wires, and PCV valve. Check the PCV elbow behind the intake manifold, it historically rots and cracks. Are there any stored DTC codes? Is the CEL on?
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Old 05-11-2009, 06:19 PM
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I have no idea what a stored DTC code is. But I do know the CEL light is not on, and I guess that means it hasn't thrown any codes right>
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Old 05-11-2009, 07:35 PM
glc
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Diagnostic Trouble Code. In other words, read out the OBD2. The light might not be on now, but it may have some stored codes. Autozone may not want to read the codes if the light isn't on, but you can get a usable code scanner for about 35 bucks.
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  #7  
Old 05-12-2009, 11:54 AM
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do NOT NOT NOT NOT use bosch or autolites you will have a misfire within 3,000-5,000miles and your truck will run like crap ive tryed both of them and they misfired on me i put in motorcraft single plat.s like the book calls for and my truck has ran fine for 30,000miles.

i had a 99 F250 with a 4.6 it was fine for everything we used it for...man i miss that truck yeah the 4.6 is deff a dog in the F-250 but i belive you have 4.10 gears factory.

depending on how many miles are on the truck look into doing the coil packs MSD or motorcraft seem to do good accel coil packs have a bad rap on here i would advice not getting them.

also if its over 100,000 miles id do o2's as well. also has the tranny fluid and filter been changed also the front and rear diff oil. other than that i think you got it.
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Old 05-12-2009, 12:06 PM
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The only reason I suggested those is because I ran both in my past Rangers and never had any issues. That's surprising about the 4.6L being an option in the LD 250, then again gearing is always your best friend.
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  #9  
Old 05-12-2009, 12:49 PM
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wasnt knocking you just talking from what happend to me but i think they prob worked fine with your ranger because you had a lower coil voltage with the V-8s the coil packs send a much higher voltage and the bosch and autolite plugs are made for lower voltage like with 4 and 6 cyl cars.

yes gearing is indeed your friend with a rubber band motor
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