Correlation does not imply causation, but when the ratios are almost identical with a 23-year offset, at any geographic location, it's hard to refute. It works from neighborhood levels all the way up to national levels, and it works in different countries that started/finished using TEL at different times than us.

The data is out there if anyone is interested in forming their own opinion, but this really isn't the thread for it. Let's both go ahead and get back on topic.

 

I bought a 1993 Cherokee Sport 4.0L and it has started sputtering at idle or when i stop. it only does it when its warmed up and ready to go. The exhaust has a hole between the 2nd and 3rd O2 sensor so i think the hole is causing the engine to misfire or shut down a cylinder all together. I plan to do a compression test on the engine just incase of cracked gasket or blown gasket all together. Please help. Sorry i do not know very much more than this.

 

Might be o2 related. Not uncommon, but what about the rest of the ignition system- plugs/wires, cap/rotor..

 

I have a 1988 JEEP Cherokee that I just aquired from a man that says it has set for 5 yers plus. I have already replaced the fuel tank, pump, fliter & injectors. Still no run. I have n excessive amount of fuel in the #6 cylinder coming from?????????????? Can aynone shed some light on this.

 

I have not replaced those yet. But the plugs look like they could be replaced so i will start there and report my progress back.

 

Just replaced the cap and rotor. Still no help. Here is a youtube video i uploaded so anyone can hear what it is doing and possibly help. when i put my phone underneath the jeep you can really hear the problem. I marked every wire before i took them off. Not sure if they could have been put on wrong previously as it looks like a mess. But any help is great help.

 

Your 1993 only has a single O2 sensor eh...

Have you done a simple tuneup yet, including new spark plugs and cleaning the throttle body?

 

Hmm.. I still am leaning towards the o2 sensor. Does it do this under load at all? How about WOT?

 

When i get it out and about it doesn't sputter at all. but when i come to a stop at a stop light ect. it will sputter until i take off. I am thinking about replacing the exhaust and throwing on a cherry bomb glass pack. i am hoping that o2 sensor will no longer pick up the exhaust leak

 

As im 18 i read it had 3 o2 sensors but its not always right. i have not done a tune up yet or replaced spark plugs but i plan to soon

 

...wait. your going to replace the exhaust, but theres still going to be a hole in it?? also your gonna catch some grief for the cherry bomb idea. They sound like ****. Super 44 might be a better choice..

 

i am replacing the entire exhaust system so there is no longer a hole in it. And as a reminder im 18 with a job budget and 3 months until winter.

 

When you do the tune up, use champion spark plugs,,a Wix or Napa gold oil filter.. Fram suck, please trust me on this.

Get that Fram out of there.

 

i have already bought the champion spark plugs so we are on the same page there! I will try the napa gold oil filter for sure. Thank you for pointing that out!

 

When I see a Fram on a Jeep,, It makes me cover my head like a vampire who just saw a cross..

yep get a Napa Gold..stay away from Fram..