Low oil pressure?
Thread Starter
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Elder User
Joined: Jul 2006
Posts: 621
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From: Near the ocean
Low oil pressure?
My oil pressure gauge has been reading very low lately so I decided to investigate. I disconnected the wire at the sender and grounded it. The gauge only went up to the middle of the normal operating range. I'm thinking the gauge is defective as it did not swing all the way over. I know the only safe way is to put a direct reading gauge in but I have no good place to mount it without it looking like a"rigged" job. Any suggestions? Can I buy a replacement gauge? I hear Ford gauges SUCK. Any truth to that? Thank you all Tom D
Post Fiend
Joined: Nov 2004
Posts: 5,638
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From: Manitoba
I don't think it would swing all the way.... best to do a direct reading on the hole for the sender with a manual reading pressure guage. The sender is a switch that powers the guage at 7PSI and above....... don't that make yur inerds warm and fuzzy.
Hot oil pressure is 10PSI at idle and 40-70PSI at 3000 plus RPM.....
Hot oil pressure is 10PSI at idle and 40-70PSI at 3000 plus RPM.....
Postmaster
Joined: Apr 2008
Posts: 4,802
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Gauges don't suck, Ford logic does -till '86 the gauges were actual pressure gauges, but then in '87 some mental midget decided to solder a resistor to the circuit board behind the dash and turn the gauge into an idiot light with a needle attached - it will never read higher than halfway up cause it was never designed to do so. Now, if you are feeling adventurous you can dismantle the dash and perform surgery to the circuit board and ditch the resistor, then replace the sender you have on the engine with an '86 or earlier sender, and then you will have a functioning gauge.
Thread Starter
|
Elder User
Joined: Jul 2006
Posts: 621
Likes: 1
From: Near the ocean
I don't think it would swing all the way.... best to do a direct reading on the hole for the sender with a manual reading pressure guage. The sender is a switch that powers the guage at 7PSI and above....... don't that make yur inerds warm and fuzzy.
Hot oil pressure is 10PSI at idle and 40-70PSI at 3000 plus RPM.....
Hot oil pressure is 10PSI at idle and 40-70PSI at 3000 plus RPM.....
Thread Starter
|
Elder User
Joined: Jul 2006
Posts: 621
Likes: 1
From: Near the ocean
Gauges don't suck, Ford logic does -till '86 the gauges were actual pressure gauges, but then in '87 some mental midget decided to solder a resistor to the circuit board behind the dash and turn the gauge into an idiot light with a needle attached - it will never read higher than halfway up cause it was never designed to do so. Now, if you are feeling adventurous you can dismantle the dash and perform surgery to the circuit board and ditch the resistor, then replace the sender you have on the engine with an '86 or earlier sender, and then you will have a functioning gauge.
I am just nervous that the gauge reads lower than before. I will do as Peter suggested and see what I have. Thanks Tom
