Question about oil guage
Thread Starter
Racer
Joined: Jan 2014
Posts: 407
Likes: 14
From: Mulberry Florida
Question about oil guage
I went to Willcox site to see what might be wrong with my guage while the center dash is out. My guage when you turn the car off the guage goes to fourty never to zero. When you start the car it go up at idle and on up to around eighty when you rev engine. On their site if it starts at zero and goes to around twenty, that means a bad resistor. I was wondering if that is what wrong with mine. Or if the guage is bad since it does not go to zero.
Thanks for any help.
Larry
Thanks for any help.
Larry
Team Owner
Joined: Jan 2006
Posts: 37,637
Likes: 3,118
From: Crossville TN
My 'guess' is that the needle has moved on the spindle so that it reads "40" when it should be ZERO. If so, it's not a surprise that it reads about 80 when running. Sounds like the ZERO setting is shifted by +40 psi.
Not sure how it could shift like that, unless the rack mechanism inside the gauge is not working properly.
If I were you, I'd leave it alone and watch it carefully to see if it is just reading 40 psi too high all the time (but otherwise working properly). If so, you could pop the needle off and reset it to 0 psi the next time you are into the gauge cluster for repair/maintenance.
P.S. I'm curious as to whether the gauge has been like that since you've owned the car.
Not sure how it could shift like that, unless the rack mechanism inside the gauge is not working properly.
If I were you, I'd leave it alone and watch it carefully to see if it is just reading 40 psi too high all the time (but otherwise working properly). If so, you could pop the needle off and reset it to 0 psi the next time you are into the gauge cluster for repair/maintenance.
P.S. I'm curious as to whether the gauge has been like that since you've owned the car.
Thread Starter
Racer
Joined: Jan 2014
Posts: 407
Likes: 14
From: Mulberry Florida
My 'guess' is that the needle has moved on the spindle so that it reads "40" when it should be ZERO. If so, it's not a surprise that it reads about 80 when running. Sounds like the ZERO setting is shifted by +40 psi.
Not sure how it could shift like that, unless the rack mechanism inside the gauge is not working properly.
If I were you, I'd leave it alone and watch it carefully to see if it is just reading 40 psi too high all the time (but otherwise working properly). If so, you could pop the needle off and reset it to 0 psi the next time you are into the gauge cluster for repair/maintenance.
P.S. I'm curious as to whether the gauge has been like that since you've owned the car.
Not sure how it could shift like that, unless the rack mechanism inside the gauge is not working properly.
If I were you, I'd leave it alone and watch it carefully to see if it is just reading 40 psi too high all the time (but otherwise working properly). If so, you could pop the needle off and reset it to 0 psi the next time you are into the gauge cluster for repair/maintenance.
P.S. I'm curious as to whether the gauge has been like that since you've owned the car.
Thanks again. Larry
Former Vendor
Joined: Aug 2006
Posts: 76,656
Likes: 1,853
From: Jeffersonville Indiana 812-288-7103
St. Jude Donor '08-'09-'10-'11-'12-'13-'14-'15
Apply power and ground to the gauge, then ground out the ohms stud (signal) to that same ground.
The gauge should go to zero.
If it doesn't you've got a gauge issue, if it does the issue is somewhere else.
If you pass the grounded out ohms wire test then remove the jumper from the ohms input to ground and see where the gauge goes. It should read like the top right gauge in the lower picture.
The gauge should go to zero.
If it doesn't you've got a gauge issue, if it does the issue is somewhere else.
If you pass the grounded out ohms wire test then remove the jumper from the ohms input to ground and see where the gauge goes. It should read like the top right gauge in the lower picture.
Last edited by Willcox Corvette; Jan 30, 2018 at 02:58 PM.
Thread Starter
Racer
Joined: Jan 2014
Posts: 407
Likes: 14
From: Mulberry Florida
Apply power and ground to the gauge, then ground out the ohms stud (signal) to that same ground.
The gauge should go to zero.
If it doesn't you've got a gauge issue, if it does the issue is somewhere else.
If you pass the grounded out ohms wire test then remove the jumper from the ohms input to ground and see where the gauge goes. It should read like the top right gauge in the lower picture.
The gauge should go to zero.
If it doesn't you've got a gauge issue, if it does the issue is somewhere else.
If you pass the grounded out ohms wire test then remove the jumper from the ohms input to ground and see where the gauge goes. It should read like the top right gauge in the lower picture.
Thanks again
Larry
