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#1: Help with oil pressure please.

Posted on 2006-07-22 12:41:11 by bushman

2000 6cyl. 45Kmiles
The oil pressure drops to 0 and "check gauges" comes on when warm and
idling. No other problems.
New oil and filter did not help.
Thanks - Allen

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#2: Re: Help with oil pressure please.

Posted on 2006-07-22 17:42:03 by Mike Romain

Normally that means the sender has gone bad or is just plain leaking.
It is located near the filter.

Mike
86/00 CJ7 Laredo, 33x9.5 BFG Muds, 'glass nose to tail in '00
88 Cherokee 235 BFG AT's
Canadian Off Road Trips Photos: Non members can still view!
Jan/06 <a href="http://www.imagestation.com/album/pictures.html?id=2115147590" target="_blank"> http://www.imagestation.com/album/pictures.html?id=211514759 0</a>
(More Off Road album links at bottom of the view page)

bushman wrote:
&gt;
&gt; 2000 6cyl. 45Kmiles
&gt; The oil pressure drops to 0 and &quot;check gauges&quot; comes on when warm and
&gt; idling. No other problems.
&gt; New oil and filter did not help.
&gt; Thanks - Allen

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#3: Re: Help with oil pressure please.

Posted on 2006-07-22 18:54:04 by Billy Ray

But to be sure go to your local auto parts store and get a real mechanical
oil pressure gauge. Many will lend or rent tools.


&quot;Mike Romain&quot; &lt;<a href="mailto:romainm&#64;sympatico.ca" target="_blank">romainm&#64;sympatico.ca</a>&gt; wrote in message
news:<a href="mailto:44C2474B.AD34152E&#64;sympatico.ca..." target="_blank">44C2474B.AD34152E&#64;sympatico.ca...</a>
&gt; Normally that means the sender has gone bad or is just plain leaking.
&gt; It is located near the filter.
&gt;
&gt; Mike
&gt; 86/00 CJ7 Laredo, 33x9.5 BFG Muds, 'glass nose to tail in '00
&gt; 88 Cherokee 235 BFG AT's
&gt; Canadian Off Road Trips Photos: Non members can still view!
&gt; Jan/06 <a href="http://www.imagestation.com/album/pictures.html?id=2115147590" target="_blank"> http://www.imagestation.com/album/pictures.html?id=211514759 0</a>
&gt; (More Off Road album links at bottom of the view page)
&gt;
&gt; bushman wrote:
&gt;&gt;
&gt;&gt; 2000 6cyl. 45Kmiles
&gt;&gt; The oil pressure drops to 0 and &quot;check gauges&quot; comes on when warm and
&gt;&gt; idling. No other problems.
&gt;&gt; New oil and filter did not help.
&gt;&gt; Thanks - Allen

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#4: Re: Help with oil pressure please.

Posted on 2006-07-22 21:40:11 by DougW

bushman wrote:
&gt; 2000 6cyl. 45Kmiles
&gt; The oil pressure drops to 0 and &quot;check gauges&quot; comes on when warm and
&gt; idling. No other problems.
&gt; New oil and filter did not help.

Loose connection or failing pressure sender.
0 psi indicates the connector has come loose.
80 would indicate a short to ground.
<a href="http://revbeergoggles.com/instruments/index.html#oil" target="_blank">http://revbeergoggles.com/instruments/index.html#oil</a>

--
DougW

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#5: Re: Help with oil pressure please.

Posted on 2006-07-23 16:01:16 by bushman

&quot;DougW&quot; &lt;<a href="mailto:post.replies&#64;invalid.address" target="_blank">post.replies&#64;invalid.address</a>&gt; wrote in message
news:pcvwg.66860$<a href="mailto:9c6.8773&#64;dukeread11..." target="_blank">9c6.8773&#64;dukeread11...</a>
&gt; bushman wrote:
&gt;&gt; 2000 6cyl. 45Kmiles
&gt;&gt; The oil pressure drops to 0 and &quot;check gauges&quot; comes on when warm and
&gt;&gt; idling. No other problems.
&gt;&gt; New oil and filter did not help.
&gt;
&gt; Loose connection or failing pressure sender.
&gt; 0 psi indicates the connector has come loose.
&gt; 80 would indicate a short to ground.
&gt; <a href="http://revbeergoggles.com/instruments/index.html#oil" target="_blank">http://revbeergoggles.com/instruments/index.html#oil</a>
&gt;
&gt; --
&gt; DougW
&gt;
Thanks to everyone. I will try a new sender. The pressure reads normal when
the engine is cold and just a little low at 1000+rpm when hot. could the
pressure relief valve be stuck open? If so where is it?
- Allen

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#6: Re: Help with oil pressure please.

Posted on 2006-07-23 17:47:16 by Matt Macchiarolo

More than likely is is the sender, they are notorious for failure. But you
should double check using a mechanical gauge you can borrow from your local
Auto-Zone.

When you get a replacement make sure it is a sender, not a switch for an
idiot light.

&quot;bushman&quot; &lt;<a href="mailto:askme&#64;askme.com" target="_blank">askme&#64;askme.com</a>&gt; wrote in message
news:MiLwg.1509$<a href="mailto:Ch5.816&#64;tornado.tampabay.rr.com..." target="_blank">Ch5.816&#64;tornado.tampabay.rr.com...</a>
&gt;
&gt; &quot;DougW&quot; &lt;<a href="mailto:post.replies&#64;invalid.address" target="_blank">post.replies&#64;invalid.address</a>&gt; wrote in message
&gt; news:pcvwg.66860$<a href="mailto:9c6.8773&#64;dukeread11..." target="_blank">9c6.8773&#64;dukeread11...</a>
&gt;&gt; bushman wrote:
&gt;&gt;&gt; 2000 6cyl. 45Kmiles
&gt;&gt;&gt; The oil pressure drops to 0 and &quot;check gauges&quot; comes on when warm and
&gt;&gt;&gt; idling. No other problems.
&gt;&gt;&gt; New oil and filter did not help.
&gt;&gt;
&gt;&gt; Loose connection or failing pressure sender.
&gt;&gt; 0 psi indicates the connector has come loose.
&gt;&gt; 80 would indicate a short to ground.
&gt;&gt; <a href="http://revbeergoggles.com/instruments/index.html#oil" target="_blank">http://revbeergoggles.com/instruments/index.html#oil</a>
&gt;&gt;
&gt;&gt; --
&gt;&gt; DougW
&gt;&gt;
&gt; Thanks to everyone. I will try a new sender. The pressure reads normal
&gt; when the engine is cold and just a little low at 1000+rpm when hot. could
&gt; the pressure relief valve be stuck open? If so where is it?
&gt; - Allen
&gt;

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#7: Re: Help with oil pressure please.

Posted on 2006-07-24 00:32:38 by Lon

bushman proclaimed:

&gt; &quot;DougW&quot; &lt;<a href="mailto:post.replies&#64;invalid.address" target="_blank">post.replies&#64;invalid.address</a>&gt; wrote in message
&gt; news:pcvwg.66860$<a href="mailto:9c6.8773&#64;dukeread11..." target="_blank">9c6.8773&#64;dukeread11...</a>
&gt;
&gt;&gt;bushman wrote:
&gt;&gt;
&gt;&gt;&gt;2000 6cyl. 45Kmiles
&gt;&gt;&gt;The oil pressure drops to 0 and &quot;check gauges&quot; comes on when warm and
&gt;&gt;&gt;idling. No other problems.
&gt;&gt;&gt;New oil and filter did not help.
&gt;&gt;
&gt;&gt;Loose connection or failing pressure sender.
&gt;&gt;0 psi indicates the connector has come loose.
&gt;&gt;80 would indicate a short to ground.
&gt;&gt;<a href="http://revbeergoggles.com/instruments/index.html#oil" target="_blank">http://revbeergoggles.com/instruments/index.html#oil</a>
&gt;&gt;
&gt;&gt;--
&gt;&gt;DougW
&gt;&gt;
&gt;
&gt; Thanks to everyone. I will try a new sender. The pressure reads normal when
&gt; the engine is cold and just a little low at 1000+rpm when hot. could the
&gt; pressure relief valve be stuck open? If so where is it?
&gt; - Allen

It could be, but first just change the sender. I think Jeep got the
original units from Lucas or similar. If your sender filter layout is
the same as a 4.0 ZJ, the hardest part is simply turning the thing--you
only get a very very short stroke with a wrench on each attempt. The
change itself other than that is trivially simple. [Thanks DougW]

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