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 Post subject: Oil pressure guage.
PostPosted: Sat Apr 16, 2011 3:18 pm 
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Location: Okeana, Ohio
I never had my oil pressure guage working. I was wiring it up I have the backlight working and all the wires ran an hooked up. When I turn the ignition on the gauge sets to 0 and when the motor is running the needle jacks up all the way on the gauge. My idiot light is working. Its a VDO gauge with VDO sending unit with a ground and a signal post. Any Ideas? Surely I don't have 80+ psi :shock:

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 Post subject: Re: Oil pressure guage.
PostPosted: Sun Apr 17, 2011 1:10 pm 
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Location: wooster ohio
Check pressure with a mechanical gauge to see actual pressure. You probably have a bad sender.

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 Post subject: Re: Oil pressure guage.
PostPosted: Sun Apr 17, 2011 5:15 pm 
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Location: hubbard, ohio & oak tree
or a bad ground. bad ground equals pegged guage


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 Post subject: Re: Oil pressure guage.
PostPosted: Sun Apr 17, 2011 8:21 pm 
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mudnut wrote:
or a bad ground. bad ground equals pegged guage


I moved and rewired the ground to make sure.... I have a different sending unit without the ground I'll try...?

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 Post subject: Re: Oil pressure guage.
PostPosted: Mon Apr 18, 2011 12:53 pm 
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is this the new motor? My buggy starts and idles with 85-90 psi till it warms up. When its cold it sits at 100 psi till it warms up witch takes a while at idle.

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 Post subject: Re: Oil pressure guage.
PostPosted: Mon Apr 18, 2011 5:17 pm 
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Location: Lancaster, Pa
I had a similar problem with summit gauges. They said to try n get your ground as close to the sending unit as possible. worked for me.


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 Post subject: Re: Oil pressure guage.
PostPosted: Mon Apr 18, 2011 8:17 pm 
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Location: Okeana, Ohio
RaceBugg1098 wrote:
is this the new motor? My buggy starts and idles with 85-90 psi till it warms up. When its cold it sits at 100 psi till it warms up witch takes a while at idle.


Yes, I never had the gauge hooked up on my old motor to know the difference. Maybe I need to get it out of the garage and let it warm up! I can't let it run to long in the garage, the exhaust is to die for :D

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 Post subject: Re: Oil pressure guage.
PostPosted: Mon Apr 18, 2011 8:40 pm 
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Location: wooster ohio
If you dont check your oil pressure with a mechanical gauge at the port to know what you actual pres is your still just guessing. you dont know if there is a problem yet.

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 Post subject: Re: Oil pressure guage.
PostPosted: Tue Apr 19, 2011 12:23 pm 
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Hyde's motors are good for oil pressure! On ef 'em blew my oil cooler apart and broke my autometer mechanical guage in the first 30 seconds of idling :lol: I had to take a shim out of the relief after that. I'd rather have too much oil pressure than too little! He builds one hell of a motor :mrgreen:

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 Post subject: Re: Oil pressure guage.
PostPosted: Tue Apr 19, 2011 8:36 pm 
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Yeah the gauge reads about 65-70. I'm going to get a mechanical gauge to double check. It will have to wait, I pick up some new rockers and need to make new pushrods. 1 step forward 2 steps back.

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 Post subject: Re: Oil pressure guage.
PostPosted: Wed Apr 27, 2011 10:53 pm 
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Location: batavia, ohio
A. Cole wrote:
Yeah the gauge reads about 65-70. I'm going to get a mechanical gauge to double check. It will have to wait, I pick up some new rockers and need to make new pushrods. 1 step forward 2 steps back.


just had same prob on my bug and there was a iffy to no connection at the sending unit. my plug wires were sharing a ziptie with the wire goin to my gauge and i had partially broke the connection when i pulled to get access to the ziptie... scared the pi$$ out me... til i looked a little harder... just checked all connections as tight and clean...

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