So I think I drove my YJ w/out oil... - JeepForum.com

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post #1 of 20 Old 07-03-2011, 11:35 PM Thread Starter
RockShoxTora
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So I think I drove my YJ w/out oil...

But seriously I have no idea or how long.
Pulled into a parking lot today coming back from a July 4th trip to grab some food.
30 min later I go back to my car to find a decently sized puddle of oil under it.
I inspected my engine and discovered my oil pressure sender had started leaking. A lot.
I checked the dip stick which registered no oil, although there had to be some in there only because it was leaking out the sender when I pulled in.
Bought a new sender and 3 qts of 10w-40. Filled up. Didn't have any unusual sounds. No clunks, pings, or clanks. Just the typical diesel tick of my valves.
Drove home about 90mi with no notable misbehavior of the engine of loss of power. It felt fine.
Got home, examined the engine once more for leaks. It may seem a tad bit noiser, but I think thats just me over thinking because of todays events. It's nothing that sounds detrimental or worries me.
Anything I should be concerned about or does it sound like I got pretty lucky?


1995 YJ
-3.5" Black Diamond Suspension Lift, Skyjacker Hydro 7000s
-1.25" Body Lift
-Trail-Gear Bumper and Tire Swing-Out
-31" BFG M/Ts KM
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post #2 of 20 Old 07-03-2011, 11:45 PM
clarkjdg
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It sounds like your very LUCKY!

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post #3 of 20 Old 07-03-2011, 11:46 PM
moonshinefuel
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Just wait until it happens to you a second time, you will want to jam a bolt in the engine block just to do away with the potential engine destroying sending unit garbage. I switched to a mechanical gauge and will never go back to sending units..Period. Your only concern is catching on time the next time it happens.
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post #4 of 20 Old 07-03-2011, 11:49 PM
baritone_mike
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You know you drive a YJ when, you drive it with out oil and don't tear it up.

˙ɹǝʌo ɹǝʇndɯoɔ ɹnoʎ dılɟ sıɥʇ pɐǝɹ uɐɔ noʎ ɟı
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post #5 of 20 Old 07-04-2011, 12:05 AM Thread Starter
RockShoxTora
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So the general consensus I'm picking up is that if it survived the 90mi drive home with no grenading/seizing/clanking I should be alright?

1995 YJ
-3.5" Black Diamond Suspension Lift, Skyjacker Hydro 7000s
-1.25" Body Lift
-Trail-Gear Bumper and Tire Swing-Out
-31" BFG M/Ts KM
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post #6 of 20 Old 07-04-2011, 12:10 AM
moonshinefuel
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Oh and if you bought your sending unit from Autozone, or equivalent for 30 something bucks, don't be surprised if the sending unit pops again within 3 months or so. (Ask me how I know). But don't worry, they have a lifetime warrentee that will replace that sending unit for free, even if you have to bolt it to a seized engine block, they will give you another sending unit with a smile.
If you are intent on retaining the sending unit, the only thing I might suggest is try to get one from a dealership, or a good quality one somewhere. I can mention however, I am seeing a trend of dealerships dealing in garbage parts now-a-days however. So good luck, hope this does not seem too cynical, I just have disdain for something that almost destroyed my engine, twice.
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post #7 of 20 Old 07-04-2011, 12:13 AM
monkeyhouse
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You are one of those guys who understands what it means to drive a YJ. You are careful and pay good attention to what is going on with your vehicle. I have driven vehicles that got low on oil, I knew it while driving because I hear noises and I watch gauges, sounds like you are the same way. I obviously can't say whether there was damage or not, but it sounds like you caught it at the right time and made the right decision to err on the side of caution, good job and I hope it all works out. You got it back safely, now time to check it out and see if there is any damage.

First Jeep was an 1989 YJ, 6 cylinder 4.2L , 258. Nuttered and TeamRushed, Weber 38 DGES, Now, I'm venturing into the world of Grand Cherokees
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post #8 of 20 Old 07-04-2011, 01:37 AM Thread Starter
RockShoxTora
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Ps, I only added 3qts and that put me at the exact same level or higher then when I add 4qts during an oil change. I basically caught my engine running on 1qt.

1995 YJ
-3.5" Black Diamond Suspension Lift, Skyjacker Hydro 7000s
-1.25" Body Lift
-Trail-Gear Bumper and Tire Swing-Out
-31" BFG M/Ts KM
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post #9 of 20 Old 07-04-2011, 07:18 AM
Xpress
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I discovered mine was running on less than half a quart of oil a few weeks back, and it was black as night.

I'm keeping careful watch over it now. My sending unit doesn't leak, however the PCV and other msc valves on the valve cover are leaking like mad...

All about that unibody life.
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post #10 of 20 Old 07-04-2011, 07:39 AM
Old4X
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If you lost all oil pressure, your lifters would have collapsed and been extremely loud, no way you would have missed it.

With as little as 1.5 qts of oil in your engine, you would still have lubrication. Don't worry about it.

418 miles on 19 gallons of gas. Can't beat the BBD !
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post #11 of 20 Old 07-04-2011, 07:41 AM
JMAC90YJ
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pcv leak

Quote:
Originally Posted by Xpress View Post
I discovered mine was running on less than half a quart of oil a few weeks back, and it was black as night.

I'm keeping careful watch over it now. My sending unit doesn't leak, however the PCV and other msc valves on the valve cover are leaking like mad...
I just had leaks from my pcv, oil filler cap and the emissions filter, New grommets fro Q-Tec and new filler cap and it all went awaysee old grommet and new one.
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post #12 of 20 Old 07-04-2011, 07:43 AM
nzpete
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There really isn't much more you can do other than to drive it and watch it. I would change the oil and filter, though.
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post #13 of 20 Old 07-04-2011, 08:24 AM
Louie4
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Sounds like you're fine to me. My mom has a '92 cherokee and I swear that thing runs on maybe 3 quarts or oil at any given time. Every time I check it I put about 3 quarts or more. Generally when it starts knocking a little that means it needs some more oil. Somehow it keeps running. The 4.0L is a tough motor and it can handle a lot of abuse but just keep an eye on it like you have. I have never let mine get as bad as bad as mom's but I'm a stickler for keeping my vehicles healthy.

Like said above, I'd give it a fresh oil change and call it good. As for the sending unit, I've never had a problem with my Autozone one but everyone has different experiences. Maybe I'm just one of the lucky ones.

Lou

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post #14 of 20 Old 07-04-2011, 08:46 AM
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lucky

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post #15 of 20 Old 07-04-2011, 09:40 AM
4.7stroker
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Last time Iwas at the U-pull it I grabbed a couple of sender units and threw them in the tool box for instant on hand spares. I am pretty sure they are oem items not cheap crap. One has been working fine for 3 years todate.

Dwayne
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