low oil pressure @ idle

1998 FORD F-150
1,000 MILES • V8 • 4WD • AUTOMATIC
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BIGWORM
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98 f150 4.6 put reman motor new h2o pump- felt like it was trying too hard to pull itself and overheated front rims were hot- put on new front brakes-- seemed too drive better but now it reads low oil pressure@ idle, bring RPM up and it reads fine what do I do now
Jul 31, 2011 at 10:22 PM
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RASMATAZ
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The idle speed could be low-

Check the oil pressure with a mechanical gauge,if normal replace the oil pressure switch. If abnormal could mean oil pump and engine bearing.
Jul 31, 2011 at 10:31 PM