kenny schmitt
NAXJA Forum User
- Location
- US
So here is my story and it would be great if anybody could help me figure out what the problem is. First here is the setup my truck has. I have a 96 xj with a RE 5.5" and 33" pro comp x-terrains. Im using stock gears with a k&n air filter and a big old crack in my stock manifold. As for my exaust i ripped out the cat and put in a dynomax muffler (it sounds mean) The second 02 sensor is just disconected and the front is brand new. Thats how my truck is setup and here are my symtoms. First i got 112 miles to my last tank and thats with 85% highway. I also get a gunshot backfire and nice fireball when i downshift through the rpms and also if i rev the engine to 5k rpms and as it drops down to 2-4 there goes the fire ball. it sounds like it misses for a couple of seconds after that. The other thing is if i downshit during normal driving and i push the clutch and stop at a light the trucks idle drops to like 200-300 for about 10-15 seconds then shoots to 1000 then at 800 where it should be. I was hoping it was the 02 sensor but i changed it and it didnt help. this is my DD and 7 mpg just is too much. Any body have any advice?:flame: thanks guys.