new injectors would be worthwhile

 

Best things I can recommend:

- Accel cap and rotor
- Granatelli spark plug wires (They are absolutely incredible....)
- E3 Diamondfire plugs
- Cold air intake
- Bored throttle body (Contact member: Thexjfiles on this forum, he does great work
- Better flowing exhaust (Performance-curve.com)
- Make sure your tires are properly aired up for street driving
- Run a fuel system cleaner through your Jeep
- #784 injectors

 

do you know if your trans is going into overdrive? if not, check your tps. plus other sensors.

 

We took a trip to Denver this last weekend. Figured tge miles off my GPS since the speedometer is off. On the high side we got 18.2. Average was 17.331 overall. The overdrive works just fine.
I read the article about the supercharger setup. Its a nice idea but not practical to spend 4k to get 3mpg.
No cap and rotor to change. Coil packs directly on the plugs. (A 2000-2002 feature)
I am thinking about the new injectors. Im sure they are stock. Like everything else under the Hood. Thanks everyone for ideas. The search for more MPG continues.

 

I installed 703's about a month ago on my 96. Better throttle response and seemed to get a tad more power. Feels better through the rpms too. Gas mileage hasn't changed much. But I think its still worth it. In my opinion those few things are more then squat. Now I have only gone through 3 tanks of gas. I expect to start seeing better gas mileage soon. Even if I don't....still worth it. Better starts, better throttle response....deff worth the $50 or so I spent.

 

As a fellow old man, I agree with your assessment. I hope to see that kind of mileage once I get my '96 5-speed 2-door on the road. Should be better in town too as I can milk more fuel mileage with a carefully shifted manual. (My Ford F-150's 4.2 V6 gets 16/20 mpg on 87 octane, BTW.)

For sure, O2 sensor performance is in the mix and all the new plugs and wires or aftermarket bolt-on stuff isn't gonna impress a wimpy sensor. Makes me wonder if tweaking the O2 is possible to eek out better fuel mileage. I'll be calculating MPGs ASAP and make that change if I don't get 22 mpg or better.

 

On the wifes 89, water temp sensor was sending bad data (low temps)to the ecu and was killing the mpg. Changed it out and the mpg went up.

 

I did a t-stat change a couple of months back. Dropped from a 192 to a 180. I only recently started tracking MPG again. IMHO if an injector change gives better throttle response than its more than squat. But the o2 sensor is now in my crosshairs. Im sure the relatively small expense couldn't hurt anything. Now on to those pesky u-joints in the front axle.

 

I normally travel short trips,7 miles, to work in my stock '01.I have a scangauge which tracks mileage and I see 14-15 mpg. Went to Florida pulling my 2000 lb boat,running at 70 and had one day averaging 25.