Chris,
My truck is the same way. The tonneu I got from you only helps .5mpg.
I think it might be the larger tire's. My mileage has been about the same
ever since I bought it. I went on a trip this weekend and @ 65 only got
15mpg
on average it got around 13.5 on the trip all hi-way. Also your topper
could add enough weight to brig down your average. oh and the bikes and the
kayak and the dog and the ol'lady ect..........what kind of mileage did you
gain w/ the valve caps?
Hop.
Thanks,
HOP.
Houston,TeXas
Metallic Red 97 SLT CC 4x4 5.2Mag 3.55 LSD
Flomaster 3"Custom cat-back, 180 Tstat,
Accell wires, Brass cap& rotor,
K&N Drop-in,Champion Truck plugs,
Pirelli 32x11.50x15, Westin Nerf bars,
Tinted windows,4-6.5",2-15" Pioneers,VentShade's,
BugDeflectorII, Extang BlackMAX Tonneau...
----- Original Message -----
From: "Chris Ryan" <CSRyan@teleport.com>
> Is there a "key on-off" method for pulling codes for my 99? I tried the
> sequence on the DML page but it didn't work, I think that's meant for
> GenII.
>
> After adding a 180TS, a Flowmaster, and modifying my intake my MPG
> dropped from an ave. of 15-16 down to an ave. of 9-10. Most I can get at
> 65 is 14mpg, used to be 20. That was 18 months ago, since then I've
> tried everything I can think of, and it's been to all three service
> centers in my area several times with no results. So I guess it can't
> hurt to replace the MAP and O2 sensors, I noticed another DMLer with
> mileage problems had good results with that. But before I did I wanted
> to check the codes, without taking it anywhere, see if there's any
> sensor errors.
>
> --
> Chris
> Black '99 Sport Plus CC 4x4 318 Auto. Everything but leather.
> 3" Rancho Suspension Lift, 32"x11.5" BFG MTs w/Gold Skull Valve Caps,
> SnugTop Expo w/Yakima Trac System w/Fairing, Sea Kayak and Bike Mounts,
> GoRhino Grill/Brush Guard w/2 130W KC Spotlights, Westin Side-Step Bars,
> WAAG Tail-light Guards, GTS Blackouts F & R, 180 TS, Cold K&N,
> Flowmaster, Line-X, Autolites, Window Tint, Ventvisors, No Decals.
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