Oil pressure
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New User
Joined: Jun 2014
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From: Spring, TX
Oil pressure
Hi everyone, besides my introduction last week - this is my first post. I know how to find information here on the site regarding HPOP and other oil related posts. However, I have a special question. Here's the scenario with known facts:
Stock oil pressure indicator has always read normal. No strange surges.
Installed AutoMeter digital cobalt series last December, and idle pressure was always 20-30 psi
Today it dropped in the single digits and even hit ZERO! But the stock gauge was still remaining faithful. So, I put the truck in neutral to idle up and move oil around until the light turned green.
I got home, and found the aftermarket sending unit to be loose. I tightened it up, and pressure went back to double digits, but was sporadic at best. Well on my test drive - it started dropping into the single digits and even zero again.
Has anyone here had this happen? Would there be a chance my new gauge is out of wack?
Thanks in advance,
Newbie
Stock oil pressure indicator has always read normal. No strange surges.
Installed AutoMeter digital cobalt series last December, and idle pressure was always 20-30 psi
Today it dropped in the single digits and even hit ZERO! But the stock gauge was still remaining faithful. So, I put the truck in neutral to idle up and move oil around until the light turned green.
I got home, and found the aftermarket sending unit to be loose. I tightened it up, and pressure went back to double digits, but was sporadic at best. Well on my test drive - it started dropping into the single digits and even zero again.
Has anyone here had this happen? Would there be a chance my new gauge is out of wack?
Thanks in advance,
Newbie
Lead Driver
Joined: Jun 2004
Posts: 6,321
Likes: 584
From: Amarillo, TEXAS!
The gauge on the dash has two positions, Normal and Nothing. The sender is a switch, not a sensor, so that's all it does. Can you put a mechanical gauge on it to see if it does the same thing? If it's steady with a mechanical gauge, the sending unit for your aftermarket gauge is probably faulty.
Oh, and I assume you did check the oil level, right?
Oh, and I assume you did check the oil level, right?
Lead Driver
Joined: Jun 2004
Posts: 6,321
Likes: 584
From: Amarillo, TEXAS!
You could either tee a gauge in there, or use a #4 ORB adapter in the plug on the top of the HPOP reservoir. The pressure may be a little different at the reservoir, but if it's rising and falling, it should do it at both ports.
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New User
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From: Spring, TX
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Lead Driver
Joined: Jun 2004
Posts: 6,321
Likes: 584
From: Amarillo, TEXAS!
It's "o-ring boss." Most hydraulics shops should have them. Commonly, pressure gauges have 1/8" NPT pipe threads, so you need an adapter to thread in to the top of the reservoir.
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