Where is the timing belt? And how would I go about replacing it?

 

No such thing on a 4.0, it's a chain. Your best bet is to search it on the site or get a factory service manual. What problem are you having that you feel that you need to replace it?

 

http://www.jeepfsm.com/index.html

$7.95 for the pdf version vs. $90.00 for the actual book. Well worth it.

 

Free....http://www.jeep4x4center.com/knowledge-base/index.htm

 

Have to ask. Why do you think you need a timing belt?

 

We don't have timing belts, we have timing chains. Its located at the front of the block under all the accessories.

 

Okay cool, I just asked because I'm selling it and someone asked about it. But I took it to my mechanics house last night to rotate the tires since I don't have the jacks and stands and I asked him and he said they don't have timing belts because they're a conventional engine or something like that.

 

"Conventional" engines also have timing belts, y'know.

A belt-driven camshaft is far more common with overhead camshafts than cam-in-block engines (not saying that C-I-B engines don't have belts, or that OHC engines aren't driven using timing chains, but few rules are absolute.)

The thing I don't like about timing belts is that they need to get replaced every 60-80Kmiles, and they're a pain in the *** to replace (particularly with front-wheel-drive, some nut usually has to stick an engine mount through the damned thing...)

However, no AMC-built engine used a timing belt - they're all chain-driven. I'm not sure if any of the Pentastar engines used in the very later (last 10 years or so) Jeeps used belts to drive the camshafts, I think they're mostly chains (the 4-148 has me wondering, but I think the V6-225 is chain-driven.)

We had to buy my wife a new car a few years back - we get her a 2005 Suzuki Verona. What sold me on it was the use of a roller chain to drive the DOHC - readily visible as soon as I took off the oil fill cap! Everything else she was looking at was belt-driven - since I'm the mechanic, I get veto power over new vehicles (I'm the poor schmuck that has to keep them running!)

The XJ did not ship with a timing belt-driven engine, at any time in its life.

The timing chain is located at the lower front of the engine, under a cast aluminum cover. It's just below the water pump.

 

The 148 (liberty 2.4.. blecch..) uses a belt. The 225 v-6, assuming you are talking the old "dauntless" engine, uses a single-roller chain.

 

Not the Buick V6 - the later Pentastar/Chrysler V6. The Dauntless V6 was a derivation of the Small Block Buick V8, which uses the same timing setup. It bears the same relation as the Chevvy V6-262 and Small Block Chevvy V8 - or the MOPAR V6-238 and V8-318.

 

 

Doesn't run very good?