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Unread 01-15-2012, 05:17 PM   #1
stressed
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1977 J-Series Truck 
 
Join Date: Jan 2012
Location: keys/glades, fl
Posts: 27
oil pressure switch location?

So oil pressure was good, now drops to 0 with check gauges light on when idleing t light after warmed up. Sometimes gauges works, sometimes does not. Reads just under 40 or so when driving when it's acting up. Been driving for a while like this, no motor noise.

Where is the switch exactly so I can replace it? tools needed? i already have a new switch.

99 grand cherokee 4.0

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Unread 01-15-2012, 05:55 PM   #2
bds5
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2006 TJ Wrangler 
 
Join Date: Aug 2010
Location: dallas, texas
Posts: 370
Should be right above the oil filter.
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Unread 01-15-2012, 08:41 PM   #3
rickcricket
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2002 WJ 
 
Join Date: Nov 2010
Location: saint louis, mo
Posts: 603
Actually in the 4.0 it is between the oil filter and firewall on the passenger side of the block.

Word of advice. Take the oil filter out. It makes the job much easier. Also don't forget to slide the little red tab before you get it off.

Get it from the dealer....have had problems with other ones.
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Unread 01-15-2012, 08:45 PM   #4
dnovack2007
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2001 WJ 
 
Join Date: Mar 2011
Location: fleetwood, pennsylvania
Posts: 312
would this switch cause the gauge to be pinned all the time?
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Unread 01-15-2012, 08:53 PM   #5
rickcricket
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2002 WJ 
 
Join Date: Nov 2010
Location: saint louis, mo
Posts: 603
Mine would go down as soon as the engine warmed up or I came to a stop. It would read regular when I was on the gas.
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Unread 01-16-2012, 08:24 AM   #6
dnovack2007
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2001 WJ 
 
Join Date: Mar 2011
Location: fleetwood, pennsylvania
Posts: 312
mine in maxed out all the time idle or on the gas.
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Unread 01-16-2012, 04:15 PM   #7
rickcricket
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2002 WJ 
 
Join Date: Nov 2010
Location: saint louis, mo
Posts: 603
You could actually have more of a problem then an oil pressure switch. I would start there and see what happens.
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Unread 01-16-2012, 05:24 PM   #8
dnovack2007
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2001 WJ 
 
Join Date: Mar 2011
Location: fleetwood, pennsylvania
Posts: 312
what elese could it be? besides the gauge or a ground.
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