Sign In
Create Account
Here is a clip of my electric oil pressure gauge. Oil Pressure Gauge The gauge worked for my first few race weekends, but now it flickers, pegs and stays there. I can get it to work by disconnecting and reconnecting. Any thoughts on what is going on with it?
Oil Pressure Gauge Issue
Started by
Keith Andrews
, 06-27-2011 11:25 AM
#1
Posted 06-27-2011 11:25 AM
Keith Andrews
-
- Members
-
- 732 posts
Veteran Member
- Location:FL450
- Region:CCR, SE
- Car Year:1999
- Car Number:26
Back to top
Report
#2
Posted 06-27-2011 01:41 PM
dstevens
-
- SMembers
-
- 1,404 posts
Veteran Member
- Location:Vegas
- Region:LVR
Could be a classic case of the sensor shorting to ground. I'd put a mechanical gauge in and test to be sure you aren't getting fluctuations just in case. Could be a bad sensor, you can measure the resistance to check. Pegging and hanging there is a common symptom of shorting to ground or a bad sensor.
#3
Posted 06-27-2011 03:05 PM
Keith Andrews
-
- Members
-
- 732 posts
Veteran Member
- Location:FL450
- Region:CCR, SE
- Car Year:1999
- Car Number:26
#4
Posted 06-27-2011 03:09 PM
davew
-
- SMembers
-
- 2,297 posts
Veteran Member
- Location:Beloit, Wi
- Region:Chicago
- Car Year:1999
- Car Number:72
It looks like the gauge is bad. The move-stop-move of the needle points (pun intended) me towards a bad gauge.
Dave Wheeler
Advanced Autosports, the nations most complete Spec Miata shop
Author, Spec Miata Constructors Guide, version 1 and 2.0
Building Championship winning cars since 1995
4 time Central Division Spec Miata Champion car builder 2012-2013-2014-2017
Back to Back June Sprints Spec Miata 1-2 finishes 2016 and 2017
5 time June Sprints winner in Mazda's
6 Time Northern Conference Champion Car Builder
2014 SCCA Majors National point Champion car builder
2014 SCCA Runoffs winner, T4 (Bender)
2014 Central Division Champion, ITS (Wheeler)
2013 Thunderhill 25 hour winning crew chief
2007 June Sprints winner, (GT1, Mohrhauser)
Over 200 race wins and counting.
www.advanced-autosports.com
dave@advanced-autosports.com
608-313-1230
#5
Posted 06-27-2011 03:18 PM
steveracer
-
- SMembers
-
- 404 posts
Blue Eyes, Aquarius, hates being squeezed to the grass in SowDiv
- Location:Austin, Tx
- Region:Lone Star
- Car Year:1999
- Car Number:92
If the sensor is mounted directly to the engine, the vibration/harmonics of the motor will rattle it's brain.
They're much happier with a remote mount.
They're much happier with a remote mount.
Steven Holloway
Artist formerly known as Chief Whipping Boy for Lone Star Region
#6
Posted 06-27-2011 03:51 PM
dstevens
-
- SMembers
-
- 1,404 posts
Veteran Member
- Location:Vegas
- Region:LVR
It looks like the gauge is bad. The move-stop-move of the needle points (pun intended) me towards a bad gauge.
How would you suggest checking a gauge without being able to swap to a known good spare? I've got access to a variable DC power supply so I can ramp voltage to test the gauge but most folks may not. Is there a low buck way, alkaline battery perhaps, that folks could use to test the gauge?
#7
Posted 06-27-2011 04:18 PM
Keith Andrews
-
- Members
-
- 732 posts
Veteran Member
- Location:FL450
- Region:CCR, SE
- Car Year:1999
- Car Number:26
I read the same thing on the Autometer site about remote mounting the sensor. Mine is mounted on the engine. It looks like a bad sensor or gauge to me.
So I just went out to rethink what it will be like to get the sensor out and in. When I grabbed the wire going to the sensor the nut is loose. I tightened the nut finger tight, started the car and the problem went away. The indication is stable from the start with a much shorter swing with engine revs and does not swing or pulse way over to the right. Unfortunately it came back after running for a little while. So maybe sensor/sensor connection is messed up. Bounced, rumble stripped and vibrated like it's on a race car.
So I just went out to rethink what it will be like to get the sensor out and in. When I grabbed the wire going to the sensor the nut is loose. I tightened the nut finger tight, started the car and the problem went away. The indication is stable from the start with a much shorter swing with engine revs and does not swing or pulse way over to the right. Unfortunately it came back after running for a little while. So maybe sensor/sensor connection is messed up. Bounced, rumble stripped and vibrated like it's on a race car.
#8
Posted 07-05-2011 05:27 AM
Keith Andrews
-
- Members
-
- 732 posts
Veteran Member
- Location:FL450
- Region:CCR, SE
- Car Year:1999
- Car Number:26
Just a follow up to finish this off. It was/is the connection on the sender. The post coming out of the sender is partially stripped. So I was able to tighten the nut without allowing the post to turn and the gauge worked normally at the track all weekend long. I'm going to go ahead and remotely mount a new sender and hopefully live happily ever after.
0 user(s) are reading this topic
0 members, 0 guests, 0 anonymous users
