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1994 K1500 oil pressure problem!

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Old March 23rd, 2012, 12:46 AM
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Post 1994 K1500 oil pressure problem!

My oil pressure keeps dropping on the gauge, i know im still getting pressure and oil as i looked in the valve covers. When i start her up the gaude says im around 40 but when i start driving it drops to 30, 20, 0, then the 'check gauges' light comes on. i replaced the oil pressure sender thinking that went, but it is still doing it. i have a new oil pump too, any ideas?
Old March 23rd, 2012, 7:57 AM
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Would you describe this as fairly good pressure when cold and gets progressively worse the hotter the engine gets?<O</O
<O</O

How many miles on this engine?<O</O
<O</O

Allan<O</O
Old March 23rd, 2012, 12:24 PM
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the engine itself is fairly new i replaced it last winter approx 20000 miles on it. and the hotter it gets the worse the problem gets.
Old March 23rd, 2012, 5:55 PM
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install a mechanical gauge and then you will know. After all you have done, it may be the instrument cluster but a mechanical gauge will assure you none the less.
Old March 24th, 2012, 6:48 AM
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Originally Posted by 1994medtec
the engine itself is fairly new i replaced it last winter approx 20000 miles on it. and the hotter it gets the worse the problem gets.
Yep,

Put a good mechanical gauge on it. If you're still showing that pressure dropping way off when it's hot, you've got lower end bearing trouble.

Allan
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