Creekrider

My jeep normally gets about 14-17mpg but lately after i sunk it in a crick it started running bad and i have gotten around 4mpg. also in park if i rev it up it smokes black. any suggestions on what my problem might be and what part i need to fix it? its a 96 4wd 6cyl.

taxidave

Or if I used the permanent Loc-Tite (the one that requires heat to remove) on two lined up nuts? Could that work?

or both the Loc-Tite and JB weld?

salad

How deep could it go, and how did you go about cleaning it out? Could be a loooot of things

JEEPiney

My buddy has a 2000 xj that we recently swapped the low pinion D30 for a high pinion D30 in... after putting the drive shaft in and wheeling a little we noticed that the drive shaft gets too close and rubs the connection between the exhaust pipe and header. has anyone else done this swap and or know of any possible solutions to stop the rubbing betweent he front drive shaft and exhaust?

side note he has a 4.5" lift with not transfer case drop installed. (wasnt sure if this might affect the drive shaft angle enough to clear the exhaust)


thanks for you help/ideas in advance!

xjclassicxj

My 98xj since I've owned it will not turn over on the 1st crank no matter how long you try but as soon as you let off & crank again it starts right up.any ideas why this might be happening?

DieselD

Stopped by oreilys this morning.

They're scanner worked.

Here's my codes:

Oxygen sensor shorted to voltage
O2 Sensor heater failure

So obviously there's a problem with the o2 sensor, I'm assuming its the upstream, more important one. I did drain the coolant last night but it was about 3 hours after that that it threw the code. Guess I'll check out. Doesn't seem to be burning rich tho. Exhaust doesn't smell rich.

Edit

If I do fix it by cleaning contacts and or wiring, will it make the code go away? Or does it have to be cleared?

Edit

Its bank 1 sensor 2 I'm assuming that's the downstream after the cat. How important is that one? Does it just check for the cat working or does it help with air/fuel levels...?

bheath

if you clean the connections the light should go off after driving it for a while. now thats only if the connections were the problem to begin with.

DieselD

Cool. That's what I wanted to know. I'm gonna grab some contact cleaner later and go to town. I just wanted to make sure it would clear if the problem gets fixed.

NickH

Yeah I did a bunch of searching yesterday and found all that info. My jeep has 97k on the ticker so I am thinking if I am pulling the exhaust anyways, then I might as well replace the cats and install a header. Not really cheap but I don't want to do it at a later date when I am already in it.

bheath

Im pretty sure it'll work. Most of the codes i've ever thrown go out after about 30 miles.

DieselD

Yea this xj is my first vehicle with obdII so I'm learning New fangled computer crap... lol

I'm good with technology when its not strapped to a motor.

On a side note, is contact cleaner in an aerosol can or what? Never bought any, but everyone seems to use it... think its bought time j have a can.

NewKindOfClown

Aerosol contact cleaner is good. I use it all the time. With a '00/01, you have 4 O2 sensors, and they're ~$60ea to replace. I ignored mine and took the mileage loss cause i was too cheap and lazy to replace them. That probably isn't the best approach.

DieselD

Yea its a 99, still only has two. I changed out the exhaust on Saturday, and I thinks I may have hit the wire for the downstream o2 when I was beating off (lol) the old muffler.

I need the right mileage though. Bout to drive 750 miles to Virginia beach Tuesday morning. I need all the mpgs I can get! I'm pretty sides its bad connection, or frayed wire.

DieselD

OK definitely wiring or connection... it just went off by itself when I stopped to pick up my girlfriend and cash her check. Lol still gonna clean it and check it out tho.

JEEPiney

if you disconnect the battery it will clear all your codes, then as you drive it if the problem still exists then the code will reappear...