Chevy s10 mod questions

[allenh318]

I have realized I am addicted to trying to increase mpg's on my truck! I made a front air dam with garden edge today. Earlier this week I blocked off my grill except for the radiator (not sure I want to close it off yet), and am checking my tire pressure weekly and running them 3 to 4 psi over the max. I found out today that when I put the obd 1 code reader on while the engine is running it will go into "field diagnostic mode" so I can see how quickly it goes into closed loop and then whether it is running lean or rich by how the lights blink. This helped me see the O2 sensor seems to be working and how and when the rich and lean conditions correspond to the vacuum gauge I have. Sorry about the running on but my wife's eyes glaze over when i talk about this stuff. Lastly, does anyone know if running a vehicle in field diagnostic mode for longer periods can cause any damage?

[kach22i]

Originally Posted by allenh318

I made a front air dam with garden edge today.

Congrats, how about some pictures?

[allenh318]

Sorry, can't post pics, won't let me, says it is too large.

[Olympiadis]

22 MPG is very good for the 4X4 model.
The WAI normally helps with true TBI, but it will boil down to the type of driving that you do. If you hypermile and do not have to climb a lot of hills (need for power), then the WAI will boost your MPG.

An electric fan will also help, as the factory clutch fan causes a measurable loss in mileage. By the same token an underdive crank pulley will also help, as would converting from power-steering to a manual steering box.

If your engine comes with a factory oil-cooler, and you do not do any towing, then remove it. Hot oil gives better mileage.

[allenh318]

Got pics of air dam and 1/2 tonneau, now need to find an e-fan for cheap or free.

[Gealii]

Originally Posted by allenh318

Got pics of air dam and 1/2 tonneau, now need to find an e-fan for cheap or free.

for the efan check junkyards or craigslist for car parts

[regency]

any better pics of how you made the half tonneau

[regency]

Also find you an airdam thats not got the holes in it, some modles came with a smooth one.

Check the junkyards for the efan. Most s10 owners use the taurus fan, i chose the 05 or so escort fan, google it and see on s10forum

[allenh318]

This is just a temporary tonneau until I see how much mpg I gain. Then I will build a better one. It was made out of 1/2 inch plywood and 2x4 and 1x2's. the cover is an old cover off of another truck that was a snap on cover. The wood is not treated for weather and the cover is not tight enough. There are also pictures of a WAI I made that I am trying right now. Both items cost me $0.00 to make.

[kach22i]

That front air dam/chin spoiler does look angled down quite a bit. I'm not sure that it will not just direct air down (and underneath), rather than around to the sides.

Adding a splitter would resolve this situation in any case.