Part 1: Parts Cannon!! Can it be saved? 95 Jeep Wrangler 4.0 https://youtu.be/XGx5cooQLQY
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Engine barely runs and has a severe lack of power. It also has the occasional no start or long cranking before it starts. So far I've found vacuum leaks, clogged ports, antifreeze leaks from the water pump and the electric fan is damaged. I had the fuel pump, filter, spark plugs, ignition wires, and a distributor cap and rotor. It also has a new coolant temp sensor, O2 sensor, MAP, intake demp, IAC and throttle position sensor replaced. The ECM / PCM has been replaced too. See part one.
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Ah, the plot thickens pouring, cooling down the water. The water for fantastic. All right guys, it's the next day again. Um, still trying to troubleshoot this here. Jeep It's starting to frustrate me a little bit. Uh I pulled those codes again. Uh, the only codes I'm getting out of it is generator field uh, voltage low. Um, it's still got that tough misfire thing. It barely gets out of its own way. It has no power so uh I know it's not fuel because the thing has a new fuel pump and it's got a new filter that was done before I got a hold of it. It's got good fuel pressure I Don't believe it's an injector issue because if it were it would be either flooding and I'd be dumping raw fuel out of the exhaust or it would just have a hard misfire all the time. which it does not. It only misfires on occasion. So uh, assuming that it's none of the new sensors including that map I Took a closer look at this map sensor and that's also been replaced at some point so all the sensing units on this engine have been replaced. but uh, we're not getting. uh, we're just not getting good mid-range power out of it and it barely wants to start. So I'm gonna go ahead and switch over and pay attention to the ignition system. Now we can see here on this side it's got some nice shiny High Performance red high temp wires. It has new spark plugs installed I Did pull one out earlier and they are a little bit fuel fouled but uh I don't think that. that's really the problem. So I want to go ahead and pull this distributor cap off, take a look under there and see how the rotor button looks and let's check the shaft in that distributor and make sure that uh, that thing's not. We will wobbling around or broken or something like that. It may even be out of time. but I don't think it is. Uh I don't see witness marks on the bolt and that thing's been in there for a while. The distributor does look like it's the original unit or it's been there for quite some time. Uh, there may be an issue with the uh, the pickup module in there. Um, but again, sometimes those are a little inconsistent or when they fail, they fail spectacularly, In which case it would run this particular instance it is operating. it's just. uh, it's just not right. So let's go ahead and pull that apart and see what we can find. Okay, this Cap's gonna be real easy to remove. There's just a one screw on each side. It appears that this has been replaced also the cap because the uh, the hold down bolts are pretty shiny. Let's go ahead and get this uh removed and we'll take a look at our interior of this distributor. Let's see what you get here. I Don't need this I Don't need this for now. Hmm, not too bad. I Do see some Rust in there. see how our rotor button looks? That's okay I Don't know guys. My my gut's telling me I have an issue with this distributor I mean process of elimination doesn't really? Uh, leave many other opportunities for possibility. There we go. That's what. that's the one. it's got a new PCM Also, I didn't I didn't show you guys that it's over there on the firewall, but the PCM has been replaced uh before I Go any further. I actually want to pull this out and take a look at the gears on it. We're going to start this again because I heard, uh, some kind of like a plastic or metallic tapping sound from this side of the engine earlier. and I want to see if we can't get that on camera. So let me throw this back together real quick just to see if we can capture that because uh, I think next. I'm gonna go ahead and pull this distributor out. All right. Plug that back in All right starting. Z Engine all right I Can't hear that. nothing noise. Hang on. hear it. Two more tapping action going. Go ahead and pull that out. it's coming out next. I Need to take a look at that powering down again. Probably didn't have to do that. It'll just stall on its own. Okay, Cap's coming back off. Let's go ahead and unplug the unit. I'm gonna pull this guy all the way out. Come on. Yeah. Unclick. Okay, so the hold down clamp is down here on the engine block. It's a uh, it's a half inch. but since I don't have standard tools I mean I got some. but I don't use them. 13 will also work. So I'm going to reach in, pull that, uh, that hold down, clamp off and then we can pull this unit out. Here Comes our Bolt and our little clamp this thing clamps onto the distributor and holds the shaft down to the block. Put that aside right over here. Don't go anywhere now. I'm going to put a little Mark here to reference where this went right about right there. So we're going to point the back side of the rotor button right in that spot. that's where it sits. As this comes up. the shaft is going to turn because it's geared and as it comes off that gear, it's going to rotate. See that? So when we put this back in, you have to remember what position we started from. All right. stop turning here to mark that again just for a quick reference for myself. I'm basically just making sure everything is referenced in case I need to put this back exactly where it came from I'm not setting or checking the timing. There we go. Okay, so the gear looks good I Don't see any crazy wear on the teeth or anything like that. Not a hundred percent certain this is it, but this is what I'm looking for. These are fairly inexpensive. I think I'm going to go ahead and pull one from the store and slap it in there as a as a triagnostic and uh, we'll see if we get any kind of improvement out of this thing. stand by. I'm gonna go down the street, be right back I do need to throw this out there because you guys are going to re-out over this. um I did adjust timing a little bit on this I did move it around and I got no change out of it I verified with the timing mark down in the crankshaft that it was in fact in time but uh I did not get any Improvement um it all I did was not run so um, it's not the timing I've already checked that it was boring so I didn't record it. Picked up a Distributing unit from the auto parts store. I'm gonna go ahead and slap this thing in and see if we get uh, an improvement out of it. It came with a new cap I'm assuming there's a new rotor button in there as well, but before I switch everything over I'm gonna just take this apart and we'll use the cap and the rotor that's already on it or the cap rather and we will see if this unit is gonna perform better than the other one. I Got a feeling this is, uh, this is what the issue is and I I will have to ask you to forgive me for my triagnostic strategy on this. I'm not extremely fluent in OBD1 vehicles I'm trying I'm trying I believe that goes. Oh I've already already messed it up. Hang on. Go in your home please. I Need you assembled? Okay, we started pointed here. Dude. I'm feeling to make sure that the bottom of the distributor lines up in the oil pump. Drive I Think yeah, yeah, we'll point it here. That's uh, that's where it went. All right, we're in, we're in good shape. Let's go ahead and plug this cap back in. Did I get that pointed right? Yeah, yeah. I did. It's all the way seated which tells me that the uh, the bottom of the shaft is down inside the oil pump. Okay, cap click and another project put our plug wires back on. These need some dielectric and then they're uh, they're on there dry. That's never good. And where's that coil wire down here hanging out coil pick. Let's go ahead and get our clamp back in. That goes right right there. Okay, let's get our little hole down tight and then we'll try to restart it and see what it does. It's either gonna work or it's uh, you're going to remain unchanged and I'm wrong. And then I did all this for nothing. which I hope not. All right. Here We go normal, right? Let's pull it the right way. Okay, it's time. Exactly where the old unit was. foreign all the way through its red rays. Okay. one quick restart. Nice. Nice. Nice. Let's uh. let's go check on. uh, that noise down there I don't know if you guys heard it. that little clicky sound that I heard and felt in there I do hear it and I do not feel it I hear it I can feel it too my tapping action going on here in here. All right backing out to Otto Okay I like the throttle response. this is good. We're gonna back up and do a gravel parking lot burnout. if it's got power I want to see what it does when we do it? Uh, we give it full send. First Gear Nice. Yeah, it's got some power now. Cool. Let's hit the road real quick and uh, confirmed that it's got power off through its rev range. We're not going to stay out too long, but first things first. we need to figure out the running issue. That was. two gears, pulled it through two gears and it had plenty of power. Try a left turn. hello oscifer I'm not wearing a seat belt I'm gonna get in trouble. Yeah, okay, he didn't care. That's cool. That's it. That's two times I've seen some I'm getting off that road. There's cops all over the place over there. What are they doing? There's another one in front of me. Oh, someone screwed up today and I'm just gonna put that seat belt on right now. We can see you. Yeah, they're hunting somebody down. Oh, that was loud and rickety. That's not smart. He's gonna get you. and there's all kinds of perpetrators around here. Me, that guy, and the thing. Yeah. back to the shop. I Got my seatbelt on too, by the way. Big. click it or ticket. How's our uh, twice, please? All right, we're good. How's our? Idol Is it idle? Okay, about a thousand. That's pretty good. We were idling at like 500 or something. silly like that. Maybe even a little lower, right, guys. Back to the shop. I'm gonna go do some clerical work and figure out if I'm gonna do anything else with this truck other than, uh, give it its horsepowers back. So uh, that being said, I'm gonna go ahead and close this video out. Um, so that being said, as always, like thank you for watching this video. Hope you enjoyed this video on this 1995 OBD1 Jeep Wrangler If you did enjoy this video, please feel free to let me know about that. Bye tap that like button down below. If you do not enjoy this video, then go watch something else or give me some feedback down in the comments section and I can use your feedback to better improve the quality of my videos. So again and as always, thank you for watching and most importantly, do not forget to have yourselves a great day! Hey look, the wife unit's here! Hello Life Unit, What's up Youngins that right there my friends is the reason you can't drive your Mustang like a jack wagon. Yes my son, you like this Jeep I like this Jeep it's not more awesome than my truck he he hates on my truck I Don't get it finalized Jeep Powering down be W And yes, in case you're wondering I did swap out that uh new distributor cap So we're good to go here.

99 thoughts on “Frustrating diagnosis! it lives again! jeep wrangler 4.0”
  1. Avataaar/Circle Created with python_avatars darkwing4 says:

    Most excellent diagnostic work Ray,, So,,, was the rotor hitting something on the distributor cap???

  2. Avataaar/Circle Created with python_avatars Cotterpin Doozer says:

    What could have been wrong with the old distributor thing which looked visually fine to cause that knocking and lack of power?

  3. Avataaar/Circle Created with python_avatars communicate121 says:

    The new editing -side by side and before and after comparisons is amazing

  4. Avataaar/Circle Created with python_avatars Steve W says:

    Great informative videos Ray, appreciate your contribution to uTube

  5. Avataaar/Circle Created with python_avatars lalitoojos says:

    No need timing set on it ??

  6. Avataaar/Circle Created with python_avatars Uncle Sam's forgotten youth says:

    All the cops are out because they're looking for Florida men. But they keep missing the Floridiots like you haha

  7. Avataaar/Circle Created with python_avatars Tyan i7505 says:

    Loved the process of diagnosis on this one.

    I'd be curious to know what ya did when adjusting the timing. Do you have any videos of that?

  8. Avataaar/Circle Created with python_avatars Steven Bryant says:

    Is the ign coil 27 years old?

  9. Avataaar/Circle Created with python_avatars John Hageman says:

    Good Job, Ray. Now I want to know what was wrong with that distributor that caused it to act that way.

  10. Avataaar/Circle Created with python_avatars Aaron Gurtler says:

    I thought seatbelts were optional in florida…

  11. Avataaar/Circle Created with python_avatars Marcel Verheijden says:

    Happy Thanksgiving Ray, sounded to me the mechanical centrifugal advance had a broken spring or something..:) good troubleshooting.. thanks for the great content

  12. Avataaar/Circle Created with python_avatars Utah Happens says:

    Wife is missing the do-da-do's

  13. Avataaar/Circle Created with python_avatars 73 Maverick says:

    The only thing Chrysler did when buying out AMC was to keep the American Motors 4.0 Liter engine. I also liked the 304ci. AMC engine. That's the closest thing I would ever own to a Chrysler product, that wasn't really a Chrysler engine. Don't get me wrong their engines weren't too bad in the day, but electrical, and shoddy suspension and overall build quality of Chryslers kinda sucked.

  14. Avataaar/Circle Created with python_avatars bigjarn says:

    Thanks

  15. Avataaar/Circle Created with python_avatars MrIdaho says:

    I am enjoying this series on the Jeep. I recently purchased my first Jeep, a 98. This series is showing me what to look for. It would be interesting if you did a short video on taking apart the distributor to see what was causing the tapping sound.

  16. Avataaar/Circle Created with python_avatars gd2329j says:

    Water pump , lower hose & fan ??

  17. Avataaar/Circle Created with python_avatars Andy Saunders says:

    What's that heatsink looking thing that is off to the left of the distributor, hanging off the rocker cover stud, with no nut holding it down? Intermittent earth or something going on?

  18. Avataaar/Circle Created with python_avatars Ian Tyler says:

    I hope you get the nod from the customer to fix the rest of the problems. It would be a shame to cook the engine now that you've got it running properly.

  19. Avataaar/Circle Created with python_avatars ARednecksLife says:

    Wouldn't it be easier to back vehicles in since you have limited space.

  20. Avataaar/Circle Created with python_avatars Jw Walker says:

    You'd think a car guy like you would buckle up before even starting the engine.

  21. Avataaar/Circle Created with python_avatars Roger Hammond says:

    Your next shop location needs to be (a) near a racetrack and (b) near a parts store

  22. Avataaar/Circle Created with python_avatars Rod Cleary says:

    sounds like rotor button shorting to ground. test by cranking engine while holding centre coil lead near the rotor. If a spark jumps to the rotor you need to replace the rotor button.

  23. Avataaar/Circle Created with python_avatars Roger Hammond says:

    Had a "sloppy" distributor in a Datsun 260Z. Below 120kmh it was not very nice to drive, but from 120 to 210kmh it was ALIIIIIIVE!!!

  24. Avataaar/Circle Created with python_avatars Luie says:

    Jeep took u back to the basics of old school vehicle set up. Glad u got it figured out

  25. Avataaar/Circle Created with python_avatars Jeff Becker says:

    Did the old dist. have a bunch of play in the shaft ?

  26. Avataaar/Circle Created with python_avatars Craig Tegeler says:

    Ray, I know that you're the boss! But, if I was in your shoes and I knew that the Jeep had been thoroughly screwed
    with, I'd refuse to do anymore work on it and tell the customer were I draw the line!!!

  27. Avataaar/Circle Created with python_avatars houla says:

    Dude! speaking of parts cannons. Just tap some roll pin out of that distributor and inspect. Admit it Ray, a Wrangler with a manual and the good ol' 4.0 is fun to drive….

  28. Avataaar/Circle Created with python_avatars Jeff Becker says:

    Sounds like spark is escaping somewhere.

  29. Avataaar/Circle Created with python_avatars Craig Tegeler says:

    Before this Jeep made it to the shop, this poor thing was really doomed for some real grab ass funky shade tree
    awnryness !

  30. Avataaar/Circle Created with python_avatars Ramon Van der Winkel says:

    Can you take apart that distributor and show us what was ticking inside?

  31. Avataaar/Circle Created with python_avatars Keith Cox says:

    Bad ground

  32. Avataaar/Circle Created with python_avatars Rune Seeker says:

    Seems like the cap wasn't clicked in fully / tight, guess it was just needing to be reseated. Good work, if the dist cap wasn't seated you would of been losing power due to it not being entirely in place and sparking nicely or at a lower charge due to positioning.

  33. Avataaar/Circle Created with python_avatars Brandon Rainwater says:

    I really enjoyed this one Ray 😁

  34. Avataaar/Circle Created with python_avatars Cherokee2005 says:

    I kind of like the side notes you put up in this video!!!

  35. Avataaar/Circle Created with python_avatars Coles Towing says:

    Pretty classic symptom-exhaust getting hot = retarded timing. I know you just replaced the dist. but it did look like it was moved slightly from before to after (admittedly thats tough to tell in a vid). Or… possibly something wonky inside causing timing to be off? We're so used to coils now it'd be easy to overlook

  36. Avataaar/Circle Created with python_avatars Daniel Jordan says:

    So glad to have a conclusion to the problem! Very satisfying. 👍👍

  37. Avataaar/Circle Created with python_avatars Atomic the Cat says:

    did you try a nutter bypass if that works then you know what the issue is a nutter bypass on these inlines has been a solution for a long time

  38. Avataaar/Circle Created with python_avatars old guy wisdom says:

    Didn't see you look at inside of cap. Wrong rotor will cut into plug contacts in the cap. I'm used to points inside a distributor advance may be faulty. If it hesitates on acceleration

  39. Avataaar/Circle Created with python_avatars he's the Master says:

    Yes keep throwing parts at it Ray. Next would be a new water pump. Then go from there.

  40. Avataaar/Circle Created with python_avatars Chuck Kie says:

    Hi Ray, dont forget proper distributor adjustment BTDC to bring the idle rpm down a bit, and to check for vacuum leaks. Have a great day.

  41. Avataaar/Circle Created with python_avatars Forkenstein says:

    I just want to say thank you to whoever brought this Jeep to Ray. I always enjoy the videos here, but this is the kind of stuff that really got me hooked.

  42. Avataaar/Circle Created with python_avatars Les Sparks says:

    Well done with that tricky diagnosis! Also like the over-dubbed clarifying comments!

  43. Avataaar/Circle Created with python_avatars GrayWolf says:

    They change everything else except the most important part lol

  44. Avataaar/Circle Created with python_avatars WalkenDead1369 says:

    It was probably one of the counterbalance arms in that old distributor, either that or one of the springs for the arm. That was a nice call on it, stuff like that can drive you nuts trying to figure out what's going on

  45. Avataaar/Circle Created with python_avatars Ron B says:

    Always hated chasing faults where others have dabbled, best plan of action is to ignore whats been replaced and doublecheck in your own diagnostic list. I’ve seen replaced parts either faulty or damaged (one spark plug gap closed up got me). That tapping noise sounds like arcing inside the distributor cap, you’re a brave man grabbing hold of it btw lol…

  46. Avataaar/Circle Created with python_avatars Roger Spaulding says:

    Well done. 👍