Have you checked your ground?

[Ricko1966]

Everytime I see this I want to scream! Grounds are not rocket science or difficult, if your component doesn't come on and you verified you have 12 volts to it,provide a ground from the component to a good ground. Did it come on,you just verified the ground is your problem. Component works but not like it should ground 1 lead of your meter to a good ground,hook the other end to where your component grounds,read your meter is it reading more than .5 volt? You've got a sketchy ground clean it. You can do the same test on the positive side 1 meter lead to good positive, 1 meter lead to the component. The component does have to powered on and running to check volt drop on either lead. There's going to be arguments about how much drop is acceptable,rule of thumb is .1 volt per connection,if you have less than 1/2 volt drop,move on its not your problem. In the car I have a cigarette lighter plug with nothing attached,I can plug it in the cigarette lighter,now I have a ground wire and a hot wire,cigarette lighter is high draw circuit,sufficient for anything I've had to test. Busy will come back later to edit and punctuate. Have a great day. Components grounded to another component like alternator,check alternator body to block for volt drop,distributor body to block etc.

 

[Keith Seymore]

I used to ask questions of the electrical Vehicle System Engineer all the time. I had him on speed dial from the back barn to his pager.

"Hey Jerry" I'd say. "I've got this problem -

"Bad ground" he'd say.

"You didn't even let me finish!"

"I know. Start by checking the grounds".

Usually he was right.

K

 

[75BEASTK20]

Everytime I see this I want to scream! Grounds are not rocket science or difficult, if your component doesn't come on and you verified you have 12 volts to it,provide a ground from the component to a good ground. Did it come on,you just verified the ground is your problem. Component works but not like it should ground 1 lead of your meter to a good ground,hook the other end to where your component grounds,read your meter is it reading more than .5 volt? You've got a sketchy ground clean it. You can do the same test on the positive side 1 meter lead to good positive, 1 meter lead to the component. The component does have to powered on and running to check volt drop on either lead. There's going to be arguments about how much drop is acceptable,rule of thumb is .1 volt per connection,if you have less than 1/2 volt drop,move on its not your problem. In the car I have a cigarette lighter plug with nothing attached,I can plug it in the cigarette lighter,now I have a ground wire and a hot wire,cigarette lighter is high draw circuit,sufficient for anything I've had to test. Busy will come back later to edit and punctuate. Have a great day. Components grounded to another component like alternator,check alternator body to block for volt drop,distributor body to block etc.

A faulty ground was my problem on my dual tank setup.

 

[Bloodhound1981]

Similar to my first response when I get computer and IT questions at work. Someone eventually bought me this shirt since I say it so much,

You must be registered for see images attach

 

[AuroraGirl]

xc_hide_links_from_guests_guests_error_hide_media

xc_hide_links_from_guests_guests_error_hide_media

 

[edgephoto]

I am a field Service Engineer for a major auto manufacturer. I see so many times where a tech has replaced all kinds of parts. I get there and in 15 minutes we have found the wiring issue. Voltage drop testing.

Start with the basics, fuses, grounds, etc.

 

[AuroraGirl]

I am a field Service Engineer for a major auto manufacturer. I see so many times where a tech has replaced all kinds of parts. I get there and in 15 minutes we have found the wiring issue. Voltage drop testing.

Start with the basics, fuses, grounds, etc.

They are easy to check. And they are simple. Sadly sometimes they are hard to find, but the FSM usually has each one pointed out in a photo.

 

[edgephoto]

Sometime for test purposes I advise to add a ground and if the problem is resolved you know what to do. Find that hidden ground and fix it.

 

[Ricko1966]

Sometime for test purposes I advise to add a ground and if the problem is resolved you know what to do. Find that hidden ground and fix it.

I stated this in my second sentence.

 

[CalSgt]

My ground is compacted road base

You must be registered for see images attach

 

[DoubleDingo]

xc_hide_links_from_guests_guests_error_hide_media

xc_hide_links_from_guests_guests_error_hide_media

Who's a dirty ground...lol...