Gutless 4.6

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Mar 25, 2023 | 08:19 PM

#16

Conanski

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Joined: Jun 2006

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From: Ottawa, Ontario

I have had 2 truck now with the 4.6 2v, 4R75w, 4.10 axle combo and that seems to be the sweet spot for this motor, it has no problem maintaining hwy speed into a headwind and will even climb some grades without downshifting out of OD, but it's turning 2200-2300rpm at 70mph and I don't think it's ever done better that 15-16mpg.
All that said, the manual trans doesn't have as deep an OD ratio as the automatics so this truck shouldn't be that sluggish, I'd suggest you test fuel pressure because a partially clogged filter or weak pump are common with vehicles that have sat unused for a year or more.

Mar 25, 2023 | 08:22 PM

#17

reh4960

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I changed the fuel filter and fuel pump and fuel pressure regulator but still only 30psi at idle

Mar 25, 2023 | 08:47 PM

#18

RLXXI

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From: Sportsman's Paradise

Quote:

Originally Posted by reh4960

I changed the fuel filter and fuel pump and fuel pressure regulator but still only 30psi at idle

30PSI is normal. Did you check air filter orientation?

Mar 25, 2023 | 08:50 PM

#19

reh4960

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???? I changed the air filter

Mar 25, 2023 | 08:52 PM

#20

RLXXI

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From: Sportsman's Paradise

Quote:

Originally Posted by reh4960

???? I changed the air filter

Do you have the round filter or the flat filter?

Mar 25, 2023 | 08:53 PM

#21

reh4960

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Round cone air filter

Mar 25, 2023 | 08:55 PM

#22

RLXXI

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From: Sportsman's Paradise

Quote:

Originally Posted by reh4960

Round cone air filter

Did you install it with the hard plastic nose pointing away from the engine towards the fender?

Mar 25, 2023 | 08:58 PM

#23

reh4960

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Towards the fender thought that was how it goes

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Mar 25, 2023 | 09:00 PM

#24

RLXXI

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From: Sportsman's Paradise

Ok, I ran across this very issue a few years ago where the owner replaced the air filter the wrong way and that bullet nose plugged the air intake on acceleration, It'll fit both ways. Flipped it around and cured the concern.

Mar 25, 2023 | 09:04 PM

#25

reh4960

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I'll check that in the morning. I'm pretty sure I installed it right. I've installed hundreds of them used to work at a valvoline instant oil change for 12 years