Oil Pressure Gauge Problem
08-18-2018, 10:38 AM
#1
Senior Member
Thread Starter
Oil Pressure Gauge Problem
I'm running an Autometer electric oil pressure gauge. Out of the blue, it started reading erratically. Bounces between 30 & 50 psi at steady RPM. Cold pressure sits at 25 even when RPM increased. Spikes to 75 at times. Condition improves once engine/oil is at operating temp, but still persists. You think it's the sender or the gauge itself?
Last edited by Mulestang; 08-18-2018 at 10:52 AM.
08-19-2018, 06:39 PM
#2
05 5.4l 3v s.crew lariat
I would be worried it is telling you about a blockage
Broken guides /jammed oil pu etc . Check it with mech gauge . Oil problems rampant on this engine.
08-19-2018, 07:52 PM
#3
Senior Member
Thread Starter
Engine has 130k miles on, but purrs smooth. No tick, rattles, knocks, diesel sound...nothing. I can't imagine the tensioners or guides are shot.
Not saying it's not possible, but there was no issue whatsoever until the other morning.
Also, if the pick up was clogged, would there be 50psi of oil pressure at idle?
Not saying it's not possible, but there was no issue whatsoever until the other morning.
Also, if the pick up was clogged, would there be 50psi of oil pressure at idle?
Last edited by Mulestang; 08-19-2018 at 07:59 PM.
08-20-2018, 03:59 PM
#4
Engine has 130k miles on, but purrs smooth. No tick, rattles, knocks, diesel sound...nothing. I can't imagine the tensioners or guides are shot.
Not saying it's not possible, but there was no issue whatsoever until the other morning.
Also, if the pick up was clogged, would there be 50psi of oil pressure at idle?
Not saying it's not possible, but there was no issue whatsoever until the other morning.
Also, if the pick up was clogged, would there be 50psi of oil pressure at idle?
08-20-2018, 04:51 PM
#5
Senior Member
Thread Starter
Originally Posted by Jojodapyro
I can't imagine it would ever have 50 psi at idle to be honest. Well, unless you are running 10W50
09-27-2018, 09:43 PM
#6
Senior Member
Thread Starter
I'll try to keep this short, but I solved my problem. After replacing the sender, gauge and 2 wires, I still got funky oil pressure readings. Searching for another possible explanation, I stumbled across a thread on a race car forum that had a lengthy discussion about the downside of getting pressure from a sandwich adapter. With nothing else to go on, I rolled the dice and ditched the sandwich adapter. I tee'ed off the stock pressure switch port and what do you know?! I now have consistent, sensible oil pressure readings.
I know the sandwich adapter is a very popular option for sourcing oil pressure. Some do it because the original sender location is too confined for a tee. I believed that originally, and that's what lead me to running a sandwich adapter in the first place. After a quick search, I was able to get a small $6 brass tee from Amazon that worked perfectly.
Just passing along what I learned.
I know the sandwich adapter is a very popular option for sourcing oil pressure. Some do it because the original sender location is too confined for a tee. I believed that originally, and that's what lead me to running a sandwich adapter in the first place. After a quick search, I was able to get a small $6 brass tee from Amazon that worked perfectly.
Just passing along what I learned.
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nathan3306 (09-28-2018)
09-28-2018, 06:22 AM
#7
nathan3306
Do you happen to have the link for the tee?
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09-28-2018, 06:39 AM
#8
Senior Member
Thread Starter
Originally Posted by nathan3306
Do you happen to have the link for the tee?
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Jojodapyro (09-28-2018)