Spun Main Bearing
JK Super Freak
Joined: Feb 2009
Posts: 1,488
Likes: 1
From: Sydney, Australia
Not another one! I thought it was just the odd one, but there are more & more reports every day coming in of 3.8L V6s failing at the majic 40K mile mark. I just started a thread to see if there is consensus on the cause of this.
JK Super Freak
Joined: Jan 2008
Posts: 1,306
Likes: 3
From: Columbus, Ohio
there seems to me no rhyme or reason to it either.. seems to happen to those that baby them and also those that wheel hard...
and there are those out there with 60k+ on them that wheel really hard and have no sign of issues...
doesnt seem to be one year either.. obviously we see more 07's but thats because they are older and have more miles on them typically...
I wish we had oil pressure gauges.. usually you can see beginnings of engine failure in abnormal oil pressure...
but of course a dumb idiot light tells you nothing...
-Christopher
and there are those out there with 60k+ on them that wheel really hard and have no sign of issues...
doesnt seem to be one year either.. obviously we see more 07's but thats because they are older and have more miles on them typically...
I wish we had oil pressure gauges.. usually you can see beginnings of engine failure in abnormal oil pressure...
but of course a dumb idiot light tells you nothing...
-Christopher
JK Junkie
Joined: Aug 2007
Posts: 2,911
Likes: 0
From: Broken Arrow, OK
Am I wrong, but all the blown engines with low mileage have been previously used vehicles. Are there reports of an original owner experiencing this?
I just wonder if this is caused by some kid who never changed the oil for the first 30,000 miles and then traded it in for something new
I just wonder if this is caused by some kid who never changed the oil for the first 30,000 miles and then traded it in for something new
JK Super Freak
Joined: Jul 2008
Posts: 1,934
Likes: 0
From: Middle of no where
Am I wrong, but all the blown engines with low mileage have been previously used vehicles. Are there reports of an original owner experiencing this?
I just wonder if this is caused by some kid who never changed the oil for the first 30,000 miles and then traded it in for something new
I just wonder if this is caused by some kid who never changed the oil for the first 30,000 miles and then traded it in for something new
JK Super Freak
Joined: Feb 2009
Posts: 1,488
Likes: 1
From: Sydney, Australia
Installing oil pressure guage in JK; Difficult?
Does anyone know how hard it is to fit an oil pressure guage to the JK? I know on pre-computer controlled vehicles it was just a matter of replacing the sender unit for the idiot light with one for use with pressure guages & then just running the wiring & installing a guage in the dash.
I'm assuming with the JK you need to install an additional sender unit to the one already fitted, as the computer would start throwing codes if you replaced it with a sender for pressure reading?
I'm assuming with the JK you need to install an additional sender unit to the one already fitted, as the computer would start throwing codes if you replaced it with a sender for pressure reading?
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JK Jedi Master
Joined: Feb 2008
Posts: 12,904
Likes: 185
From: Maine
Does anyone know how hard it is to fit an oil pressure guage to the JK? I know on pre-computer controlled vehicles it was just a matter of replacing the sender unit for the idiot light with one for use with pressure guages & then just running the wiring & installing a guage in the dash.
I'm assuming with the JK you need to install an additional sender unit to the one already fitted, as the computer would start throwing codes if you replaced it with a sender for pressure reading?
I'm assuming with the JK you need to install an additional sender unit to the one already fitted, as the computer would start throwing codes if you replaced it with a sender for pressure reading?
You could install a T under the OEM pressure switch.
Or, you can install an adapter plate under the oil filter.
Last edited by ronjenx; Aug 9, 2010 at 09:09 PM.
JK Super Freak
Joined: Feb 2009
Posts: 1,488
Likes: 1
From: Sydney, Australia
My other vehicles all have pressure guages & I like the pre-warning of complete loss of pressure they give.
I noticed recently that the needle on the guage of my old '83 Mercedes was a little slower than usual to rise from idle pressure to normal operating pressure when I acellerated, so I checked the oil level & sure enough, it was low. Not low enough to starve the pump on level ground, but low enough to cause the pump to hesitate in producing full output pressure. I was able to add a few quarts of oil before I completely starved the pump of oil and did some real damage.
JK Enthusiast
Joined: Jul 2009
Posts: 378
Likes: 0
From: Southern California
On topic;
I feel so bad for the people having these low mile failures. No way such things will help the Wrangler model stick around longer.
I see no more pattern in these bearing failures so far than the leaky tops, leaky axle seals, bad clutches....etc......etc....
Is it still just a piss poor quality control issue?
Off topic about the oil pressure guage question
Google Aeroforce Interceptor Gauge. It plugs into the computer port under the dash, which also provides power. It will read many things in addition to oil pressure, including tranny temp. Want to know your cat temps, ambient intake temp, etc? You can show 2 different readings at a time, and the display can cycle through different readings at intervals you select. I hear the newer ones let you control fan,ESP and some other settings (mine are too old). Part # CNCx01.
You can have 2 bright warning lights flash if a reading (under or over)exceeds parameters you set.
Upside - plug and play, multifunctional
Down side - about $250.
I feel so bad for the people having these low mile failures. No way such things will help the Wrangler model stick around longer.
I see no more pattern in these bearing failures so far than the leaky tops, leaky axle seals, bad clutches....etc......etc....
Is it still just a piss poor quality control issue?
Off topic about the oil pressure guage question
Google Aeroforce Interceptor Gauge. It plugs into the computer port under the dash, which also provides power. It will read many things in addition to oil pressure, including tranny temp. Want to know your cat temps, ambient intake temp, etc? You can show 2 different readings at a time, and the display can cycle through different readings at intervals you select. I hear the newer ones let you control fan,ESP and some other settings (mine are too old). Part # CNCx01.
You can have 2 bright warning lights flash if a reading (under or over)exceeds parameters you set.
Upside - plug and play, multifunctional
Down side - about $250.
Flash