02-21-2012, 10:41 AM
Join Date: Nov 2008
tune up time,Which performance mounts work
98 sport 4.0 200k miles and has recently started losing power and sometimes stumbles on acceleration
Im about to go thru all the sensors,fuel system and change the timing chain/gear sets
what are gimmicks and what works on the 4.0
timing gears instaed of chain,pros and cons?
a milder camshaft.....which one?
Fuel pump or pressure regulator?
With my 31's I use to get 16mpg now its dropped to about 12 in the past 2 months.I checked the cat converter temps it was 263 in and 354 out so It doesnt seem clogged
I run an ax-15 on 3.07 gears until I regear to 4.56 and add 33" tires sometime this year.I dont exceed 2500 rpms,mostly shift at 2000.i run my Jeep onroad like a grandpa,offroad I ride in mud,2nd gear low,maybe 3rd.No excess skinny pedal.
bottom line im looking to awaken my sleepy engine,not looking for high performance but a couple extra ponies wouldnt hurt.
Pincho De Lapiz