2.25"

Could you post a picture? It's been a long time since I crawled under the '01 I used to have. And for anyone else reading, all '01 (and "California Emissions" '00) models have the two pre-cats in the manifold, a full cat after the downpipe, and four O2 sensors. I suspect the flange is different from earlier models.

 

Sorry about that, I didn't have time yesterday and I did that by voice on my phone and I didn't have my glasses to check what I wrote.

You nailed what I meant to say.

Looking further for the anti freeze leak, I am leaning towards one of the rear freeze plugs. Hopefully it is the side and not the rear.

Okay, I cleaned the Throttle Body, Replace the Sensor. Cleaned the IAC and replaced both O2 sensors. Still putting out code for the O2 Sensor. Need to check the wiring for the upstream harness.

RSWiser

 

The leak appear to be at the rear of the engine as the anti freeze is landing on my skid plate at the rear.

Today I am going to get a mirror and flashlight and try to pin point more exactly where it might be leaking.

Thanks for the info.

RSWiser

 

Haha, the dictation always gets me into trouble.. I thought auto correct was bad Anyways, good to check the harness for shorts.. Older jeeps and their wiring issues, oh boy! I had a long standing issue with my upstream o2 sensor. The culprit (after years of replacing o2 sensors and searching for the issue..) ended up being in the ignition coil. Not 100% relevant as you have coil packs, but the bad ignition was messing with timing and a/f ratios, this caused the o2 to kick the CEL on. Like I said, the o2 sensors simply report data, they don't create it, there may be a short, but if not the problem probably lies somewhere else.. You'll find it. As for coolant leak, wouldn't the one on the back of head be easier to get to? I thought the other one, on the engine that required pulling the engine or tranny?

 

Whatever you do, DO NOT fill the holes with bondo. They will absorb moisture anytime exposed and will pop right out. Get a kit from your local auto parts store and use Fiberglass. That is completely watertight and will last a long time unless done improperly or impacted hard.

Hope this helps.
Rick

 

Why not the cheap rubber plugs? It's water tight, but you still have drain holes to dump the inevitable out.

 

Who the **** tried to use bondo for that? They make replacement freeze plugs, and they're cheap. Use brass or copper; not steel. It'll last longer

There are six. One front, one rear, four on the side. The rear requires pulling the engine.

 

They're a temporary fix. Rubber plugs commonly fail within two years, especially in colder climates

 

Didn't have shop space today and with the new snow I didn't really want to crawl around under my Jeep. I did get my mirror and flash light out. Further investigation leads me to think it is the rear side freeze plug. Looks like it is leaking only when cold from that plug.

I should have space in the shop in a few weeks and I don't have any trips planned until January so I should be good on this.

On the CEL. Could a bad ground contribute to this?

RSWiser

 

He's talking about holes in the floor dude. lol

 

Lmao what did I overlook? But I think my surprise was warranted, considering what I thought they were discussing

 

Not looking to make a race car out of my jeep, but need a little more giddy-up and have some engine work to do anyways. Just have a couple of questions, hopefully someone can answer.

Has anyone installed the new edelbrock cylinder head?

Is this a real kit or some sort of complicated scam? http://jeepm62superchargerkit.blogsp...mount-kit.html

Is there anywhere that makes a 2.5" down pipe or would that be a custom item?

 

I wouldn't give any blogging website that much money, but the M62 is the right supercharger for the 4.0L

 

Yeah, me neither, but it's a fair price for a supercharger. The information on the site is plentiful and seems realistic and I think I heard about it from somewhere reputable. Wish he sold the kits on ebay or something where I would be fairly protected. If it is legitimate and I can find multiple people who are running them, that would sway me away from a 5.3 swap.

 

I thought that site was run by a user o here? It sounds REALLY familiar.

2.5" downpipe would be custom, yeah. Everyone seems to make the rest at 2.5", though!

Post title lol