fuel pressure gauge
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Joined: Jun 2004
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From: In a van down by the river, Missouri
fuel pressure gauge Have auto meter 2 1/16" electric fuel pressure gauge. I removed the schrader valve and installed an adapter & the sending unit.
It has a light with a power & ground pigtail wires. It has another set of wires that goes from the gauge to the sending unit (plugs on both ends) with a power and ground pigtail wire coming from the gauge plug end. I have the light power wire & the gauge power wire connected together and they are connected to a power wire that i already had ran to the fuse box under the hood. I did the same thing with the ground wires.
When i turn the key on, the light works and the gauge pegs the needle. Start the car and the needle stays pegged.
I checked all the wires and none are damaged. Checked and it is getting a good ground and power.
Why does is it pegging the needle?
It has a light with a power & ground pigtail wires. It has another set of wires that goes from the gauge to the sending unit (plugs on both ends) with a power and ground pigtail wire coming from the gauge plug end. I have the light power wire & the gauge power wire connected together and they are connected to a power wire that i already had ran to the fuse box under the hood. I did the same thing with the ground wires.
When i turn the key on, the light works and the gauge pegs the needle. Start the car and the needle stays pegged.
I checked all the wires and none are damaged. Checked and it is getting a good ground and power.
Why does is it pegging the needle?
Originally Posted by One Bad Z
Have auto meter 2 1/16" electric fuel pressure gauge. I removed the schrader valve and installed an adapter & the sending unit.
It has a light with a power & ground pigtail wires. It has another set of wires that goes from the gauge to the sending unit (plugs on both ends) with a power and ground pigtail wire coming from the gauge plug end. I have the light power wire & the gauge power wire connected together and they are connected to a power wire that i already had ran to the fuse box under the hood. I did the same thing with the ground wires.
When i turn the key on, the light works and the gauge pegs the needle. Start the car and the needle stays pegged.
I checked all the wires and none are damaged. Checked and it is getting a good ground and power.
Why does is it pegging the needle?
It has a light with a power & ground pigtail wires. It has another set of wires that goes from the gauge to the sending unit (plugs on both ends) with a power and ground pigtail wire coming from the gauge plug end. I have the light power wire & the gauge power wire connected together and they are connected to a power wire that i already had ran to the fuse box under the hood. I did the same thing with the ground wires.
When i turn the key on, the light works and the gauge pegs the needle. Start the car and the needle stays pegged.
I checked all the wires and none are damaged. Checked and it is getting a good ground and power.
Why does is it pegging the needle?
Thread Starter
11 Second Club
iTrader: (1)
Joined: Jun 2004
Posts: 655
Likes: 0
From: In a van down by the river, Missouri
Nothings wrong with how i have it wired. Check every wire twice for cuts & spliced everything again.
Only have a "light" wire tester tool. The gauge main power wire gives bright light and the ground is good.
There are 3 wires that go from the sending unit to the gauge. gray (power) black (ground) purple (sends the info). And at the gauge end like i said, it has another power and ground wire to go to fuse box & body ground. The gray wire puts out a dim light on my tester. The black wire is good. Would like to know what how low volts the gray wire is suppose to have.
I have other gauges that are running on the same power wire and they all work.
Thats as far as i've got.
Only have a "light" wire tester tool. The gauge main power wire gives bright light and the ground is good.
There are 3 wires that go from the sending unit to the gauge. gray (power) black (ground) purple (sends the info). And at the gauge end like i said, it has another power and ground wire to go to fuse box & body ground. The gray wire puts out a dim light on my tester. The black wire is good. Would like to know what how low volts the gray wire is suppose to have.
I have other gauges that are running on the same power wire and they all work.
Thats as far as i've got.
I had a bad n2o guage from Autometer. It would do the exact same thing yours is. I bought another guage from a local speed shop connected the "old" guage plug into the new guage and it worked 100%. I bet since you've checked the wires it's the guage.
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