You're the 4.0 whisperer

I have full confidence in what you do especially because you are a person of good character and integrity.

“Dex” your a stand up guy/ Mechanic . I Just purchased my first Jeep XJ 95. And I’m glued to your videos . Thank you from San Antonio .

I bought two engines from Dex (so far). One was used and the more recent one he rebuilt. Both ran great! I ended up replacing the head on the first (my preference) and the second one has right at 2000 miles since the build. It is running amazing in my 2001 XJ. I appreciate his "realistic" approach to these Jeeps. I will definitely be buying from Dex again.

Nice. New favorite dude on the tubes

As a business owner I felt this, and they always think you should fix everything wrong for free. He probably ran it hot from the looks of the rad. But at least you got a good video out of it.

I've learned so much watching your vids, just wanted to say thank you brother

I've had so many people leave the shop, break down in their POS, call me back and blame me. I drive down there to get them and it always turns out to be either a completely other system or bad parts they had previously put on. Personally i have started to avoid all local parts store at any cost, rock auto gets my money.

I’ve found that the crankshaft position sensor on jeeps can cause all sorts of weird issues, from the volt gauge dropping to zero, fuel gage will be on empty even though you know it’s full, motor will randomly cut out and sometimes cut out when hitting harsh pot holes. My son’s jeep needed the head replaced, we drove into the garage changed the head out and it wouldn’t start , it would pop and backfire. Put a new crankshaft position sensor on and it fired right up, we never touched the sensor we changing out the head but yet it went bad

tis why its good you started this channel tbh... camera never lies . Also all whoever needs to know is the used motor has decent compression etc

Camo Jeep with ducks all across the hood 😂😂 enough said -Chris Pannell

you need to do a live q+a sometime ... plz

Dexter, I learned so much in your 15:01 video. Thank you. 🙏

Great video and bad situation but that’s how it goes some days. The buyers mostly likely knows very little about vehicles or he’d have at least checked fuel and fire first thing. Nice work kidd MOPAR2YA 😎

People act like I'm crazy, but i have gotten to where I want OEM replacement parts for anything anymore. New from the dealership or pulled from a junkyard, don't matter much to me.

Should do more TJ stuff. Did a tune up (plugs, wires, cap/rotor) with Autozone crap on my '99 4.0 TJ a month or so ago and immediately had a rough running engine, first time I'd used AZ parts in 20 years, remembered why I quit going there. Didn't even try to chase it down, swapped it all out with Accel parts and was running great again. Only thing I buy from autozone now is fluids and batteries.

Well, when you buy a junkyard motor, it is what it is 🤷🏼‍♂️nobody fault.

Awesome video! My 99 tj misses sometimes, I wonder if the injectors are my issue too...

This is why I shop for my XJ at the junk yard or from American made stuff. Ford 4 hole injectors or the BBK throttle body, factory plenum, WJ airbox tubes and expansion chamber etc. Factory only please and thank you. I wanted the CAD disconnect on my daily for better mileage. You got a video on those? I dont touch the Renix so I know nothing about them

Awesome work bud

Glad I watched this because today my camshaft position sensor magnet decided to fall and the sensor is less then a year old.

Nice work!

Sad that used parts are better than new half the time anymore. Seems like a daily thing for me..

Damn son your a 4.0 magician!!

Great diagnostics. We call it durablast

Keep up the good work.

You are THE MAN!!!

Check the ground everytime we put a Jeep engine in. We had problems with ground. Just what I remember

so speaking of aftermarket grey parts. out of all the parts you can get, do you have a preference? obviously not counting the fact you have the oem junkyard out back. if you were a normal guy with normal access to parts. would you still prefer the junkyard oem stuff? and what should you never junkyard on a xj mj zj etc?

I can smell this video😂 love your videos

Great video

Lol, I’m waiting on Auto Zone to contact you about bashing their parts quality. But.....when you just telling the truth, what is their argument? Their parts suck, causing you and me both to quit buying Auto Zone parts. Kinda simple.

I also got a bad injector from Autozone yet they were made in usa so you never know

Good video bro!

I watched you ride past all of them clean WJs, thinking about how I need a 4.0 out of one real bad in Northern California.

Don’t really care about jeeps. But I love this channel

We want merch

*** HEY DEX*** 2000 XJ 4x4 4.0 question for you.... You know how the 00-01 XJ's switched over to a split dual cat system, there's like a Y pipe with 2 small cats just before the exhaust manifold. Full disclosure I am not a mechanic. So that split on that Y pipe had a crack and a bad exhaust leak at the neck of the Y. I was stupid and instead of getting the crack welded I trusted a custom exhaust shop to put in a new dual cat system with new o2 sensors. My XJ is low miles and 100% stock, a real cherry so I wanted to keep it as stock as possible. Ever since the exhaust guy put the new dual cat in there the engine runs like crap. Sluggish, check engine coding for cylinder misfires and sometimes I get vapor lock if I try to start the engine when it's hot. Took it to another mechanic who showed me that the exhaust guy welded shut (he called it plugging up) one of the o2 bung holes. So there is an o2 censor in front of the dual cats but he plugged up the one behind the dual cats. I'm guessing the computer doesn't like that missing o2 sensor and the fact that the bung hold is welded shut? Do you think this is making the engine run funny..... clogging up the plugs/injectors and sensors with gum from too much fuel? MAC sensor comes to mind. Sometimes the first 2 minutes of a cold start is loud as hell with black drops of water coming out of the exhaust pipe and a nasty gas smell in the exhaust fumes. Had the jeep 2 years before I had the guy mess with my exhaust and she ran perfect all the time, ever since the exhaust dude plugged up the bunghole where the downstream o2 censor should be it messed everything up. Also the gas milage is terrible now. I was going to take it back to the exhaust shop but they got in some legal trouble so I don't trust them at all. I think I picked the wrong guy to mess with my jeep. Lesson learned there. Sorry for the long question, somehow I think you may be one of the only people out there that can help. MY ONE BURNING QUESTION IS..... Do you know a good brand to replace the 00-01 4.0 XJ entire exhaust system including the dual cat system they used on the 00-01 XJ 4.0. At this point if I'm thinking if I can find a good close stock system I will go ahead and keep the manifold and replace the rest of the exhaust system. I know this was a long one, any thoughts would be appreciated my man. I appreciated all the mods on your Jeeps, really cool stuff. This Jeep I'm talking about is a cherry though so I'm trying to keep her 100% bone stock. Everything works, even the original Jeep key fobs.

I like champion or NGK plugs for my 4.0

I have a jeep xj question. Not i have not problems currently but i have my wiring harness to my thermostat sensors there but no wires hooked up to it ? Could you make a video to replace one

tried to swap to the 4 hole injectors in my 95 xj it for some reason no matter the order i put the new injectors the 2 middle injectors wouldn't fire put stock ones back no issue

Dex, can you make a video on how to buy, and where to buy parts? What’s wrong with autozone?🥺 I want to fix my 96 up right, it’s really nice. Just a few problems😂

Good man

8:30 Buddy your phone got exposed to liquid or was dropped recently. Electronics are susceptible to kinetic shock. Tossing them/Moisture can cause this. Microphones are tiny diaphragms. Under shock or moisture they sound tinny until the diaphragm has been exposed to enough vibration to work it back like a snapple cap. They are water tight now so this is only temporary. This meant a dead mic a decade ago.

Do I need to remove battery in a YJ to weld inside the Jeep?

Can anyone tell me, what is that starter relay device he’s using to start from the panel? What’s it called?

That was one of my cheep Jeep’s I would have bought at a bargain, fixed cheep because no one can work on them and sold it at a huge profit.

Do you work much on the 4.7? My wj could use some tlc. It runs great but has several oil leaks. Engine, power steering, yoke. Etc

My Session 5 gopro did that sound change and I had dirt in the mic?

The man

Jeebus H Christ Your are an amazing channel. Jeeps are my favorite cars on a budget. You are the guru!!!!

say away from autozone and autolites 😂 my other jeep i had gotten three crank sensors it would finally start but check engine light still in the end i had go to the dealer and get one and then all was good no light

Really appreciate your videos. 90 model overheating and good thermostat, good water pump, clear radiator, head and head gasket no signs of cracking. What else could be the cause?

What is that starter relay your useing? That would be so handy!

You changed my injectors, now it has death wobble. What did you do?!!

Im hoping you will answer this can i put a 2001 wj 4.0 in a 1992 xj will the sensors fit i know i got to swap the flex plate and what about motor mounts

I bought a set of orange ford 4 hole 19# from injector rehab. Have you ran these compared to the stock Siemens injectors? 🤔

I would have told ol boy to pound sand and at least finish the install then come back to me.

8:40 You sound like counter strike 1.6 radio.

Hey dex what kind of spark plug do you recommend for a 4.0 inline 6 1998 Cherokee

Isn’t that the fun part of buying used motors? Finding and fixing the quirks lol

👍🏻💯🇦🇺⛽️

I Won't even drive through a Auto Zone Parking lot !!!!!

Auto Zone parts almost killed my XJ. Stay away.

You do awesome work and you help educate people. I know a lot about the XJ's & ZJ's. don't really like the wranglers lol

America 🇺🇸 💪🏼🦅🛠️

Tps