Question about 2002 Ford Mustang

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Oil pressure guage not working. check engine light not illuminated, engine not overheating,oil up high on dipstick with engine running. drove 5 miles after guage quit working! I suspect oil pressure guage or sending unit,however I do not know where sending unit is located on engine or how to trouble it. Is my diagnosis correct and how do I check? please help

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  • beshaffer Feb 02, 2010

    my only problem with my 2002 mustang gt,is the oil pressure guage has stopped working.refer to origional posting. I need to know how to diagnose the sending unit to see if it is defective becvause I do not suspect oil pump. It has less than 10000 miles on the pump, check engine light did not illuminate, oil is high on dip stick at idle. thanks,Barry

  • beshaffer Feb 03, 2010

    thank you your done 82, i will try to locate the sending unit this weekend in the area you sugested,however I do not know whether to check for voltage or continuity.my haynes manual does not even mention the oil pressure guage. I assume the sending unit is electronic on a 2002 mustang gt.
    further input , please.Thanks, Barry


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Sending unit should be in this location. This is a cheap part that likes to fail.oil pressure guage not working. check engine light - dec59d3.gif

Posted on Feb 04, 2010

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If the gauge is simply not working yes, i would assume that the sending unit had stopped working, I would look on the side of the engine block, should be located close to the bottom of the engine close to the oil pan.
Check it out and if you need more info let me know so i can check it out.

Posted on Feb 02, 2010

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Have you checked the SJB (smart junction box)? It's located behind the passenger's side kick panel. Some people have experienced leaks there. Possible the SJB got wet. ------- disconnect the ground to the battery for about 30 seconds then reconnect and check out again. Remove the factory sending unit located on the front right side of the lower manifold (your right side facing engine) and screw the water temp send unit. Make sure you wrap the connector with Teflon tape to avoid leaks. The Oil Pressure Gauge is the hardest to install, but it just takes a little more time than the water gauge.
Locate and remove the stock sending unit, it is located at the front of the block, just a few inches above the oil filter.
Route the capillary tube in the same way you routed the water temp copper tube.
for more detailed help with proper instructions and diagrams please click on this link directly
http://www.allfordmustangs.com/Detailed/36.shtml
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This will help. Thanks please keep updated.please do rate the solution positively .thank you for using fixya


Posted on Feb 01, 2010

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