91 sunbird oil pressure gauge jumping up and down coul it be?

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  #1  
Old 03-18-07, 08:32 PM
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Unhappy 91 sunbird oil pressure gauge jumping up and down coul it be?

the oil pump was replaced 2 yrs ago.if it were the problem would it go out slowly like this, or all at once(whats the most likley?)also used oil treatment(which had the consistency of sticky grease)ive heard it may have caused a clogging type problem with the pump.im changing oil tomorrow just in case,but i would appreciate anyones ideas on this matter.i know its an old junker but its all ive got,any help greatly appreciated,than you.
 
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Old 03-19-07, 04:34 AM
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Loose connector at the sending unit or bad sender would be first to check.
 
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Old 03-19-07, 01:26 PM
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More than likely the oil sender unit. my astro van does the same, I put on an aftermarket gauge and that stays steady.
 
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