1994 Ford F150

[Execut1ve]

well done mech, I tip my hat to you sir

[user removed]

Well I haven't got it to 20 MPG yet.
Changed the oil and filter, used no oil and stayed clean on the oil that came in the truck.
Got a new windshield courtesy the company repaving the highway when they left the debris from stripping the old pavement.
Also got the trans and diff fluids changed since they were original and 19 years old.

Peened the air regulator sheet metal cover to get some more spring tension to reduce the fast idle. It ran up to about 2500 on a cold start before now it's half that speed. Pintle type with solenoid working against the spring tension. I am used to them not running fast enough on Nissans, this Ford is just the opposite.

I tried the tires at 44 PSI but they were beating me to death so I dropped the pressure a little. I actually coasts nicely, but I am not sure about engine off bump starting right now.

Here is a pic of the bottom of the cab floor, that shows you how clean and rust free this baby is.

Wish I could get about 3 more inches of leg room.

regards
Mech

[Execut1ve]

nice machine you got there. I'm definitely jealous of the lack of rust lol. if you're having idle speed issues you'll want to start with your IAC valve. I replaced mine and it took care of all my idle issues

[slowmover]

1700 miles in 5-months, or, 4000 miles per year. FE hardly matters compared to reliability on the OP's truck. 26-cpm, but only $1000/yr.

[trooper Tdiesel]

related to the manual trans swap idea....
if this has been covered im sorry i missed it....


ford used two different 5speeds 1987 to about 1996 in the trucks.
1980 to about 1986 theres like 5 or 6 different manual tranys used, including a good ol three on the tree.

87 to 96
one was from Mazda the other one is called a ZF

most 1/2 tons are found with the Mazda do to being a light duty trans, but there are a few 1/2 tons with ZFs


in short, if you changed to 2.73s the Mazda trans will do 35-/+ MPH in 1st gear if not faster.
not fun if you have stop and go all day long.
pull a boat up a dock ramp a few times a year.
or need to back a trailer up.
ECT ECT



my 0.01C if it was my ride.....
leave the 5.0 V-8 in it..i love the I-6 4.9s but its just to much time and effert to swap all the wiring ECT

go to a 2.73 rear gear, and use a direct drive 4sp with a granny 1st and reverse.
using a 2.73 and a drect drive trans will net about the same rpms as a 3.08 gear and a 25% O\D. but will get more power closer to the ground with out having the efficiency loss of a big gear spinning a little gear in top gear.

even with a granny geared 4sp with a 2.73 rear,1st will still get you to around 20mph.
the ZFs have a granny 1st about 5.75 to 1 reverse is still rather tall, not as bad as a Mazda but still rather tall.

and u-just tire size as needed to get RPMS right.

[Execut1ve]

taller gears in general would be of very limited benefit to me as the truck never goes faster than about 45 mph which is just after shifting into overdrive. at that speed it's spinning about 1500 rpm