2005 sport trax ..elecrical problems - Ford Forum - Enthusiast Forums for Ford Owners


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Old 04-08-2018, 08:37 AM
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Default 2005 sport trax ..elecrical problems

Ok, fuel gauge works sometimes then odometer now blinks occasionally and then the dash and head lights shut off...
Frustrated!!
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Old 04-08-2018, 10:52 AM
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As you are probably aware intermittent problems can be a tech's worst nightmare.
Some possible causes could involve the instrument cluster or lighting module, but it is rare that both would be involved at the same time.
When unrelated problems take place one of the first things that comes to mind is ground connections. A wiring diagram could possibly offer some help if a common ground is involved. For a starting point it might be a good idea to confirm good ground connections beginning right at the battery negative post. Then move on to how and where the sheet metal gets it's ground and many times there are redundant grounds to prevent this type problem. Like everything else multiple grounds can get slightly corroded and combined can contribute to the problem. Other than looking for a TSB (Technical Service Bulletin) for the exact problem, checking ground connections at this time seems like a reasonable starting point.
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Old 04-08-2018, 11:01 AM
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Quote:
Originally Posted by hanky View Post
As you are probably aware intermittent problems can be a tech's worst nightmare.
Some possible causes could involve the instrument cluster or lighting module, but it is rare that both would be involved at the same time.
When unrelated problems take place one of the first things that comes to mind is ground connections. A wiring diagram could possibly offer some help if a common ground is involved. For a starting point it might be a good idea to confirm good ground connections beginning right at the battery negative post. Then move on to how and where the sheet metal gets it's ground and many times there are redundant grounds to prevent this type problem. Like everything else multiple grounds can get slightly corroded and combined can contribute to the problem. Other than looking for a TSB (Technical Service Bulletin) for the exact problem, checking ground connections at this time seems like a reasonable starting point.
ok, I'm sure gunna check it out.
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Old 04-14-2018, 06:36 AM
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Originally Posted by Doubbledawg View Post
ok, I'm sure gunna check it out.
Where should all the body grounds be located or should i just add some new grounds....
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Old 04-14-2018, 07:54 AM
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They should all be visable. They are usually connecting body sheet metal to either the negative battery post or the engine . Don't know if any work was done where some may have been left disconnected or broken.
The best place to start is right at the battery negative post. You may see additional ground wires at the radiator support, both front fenders, the firewall, and there are even some that you may not see. The object is to remove them each one at a time clean the surfaces and reinstall the connection and applying dielectric grease , if available , to each of the connections.
There are ground connections under the dash among other places.Unless you find a broken wire usually there is no need to add more ground wires. Depending on how many you find and clean usually takes around one hour.
A schematic diagram with ground location info is the better way to go, but that info is not always available. Keep in mind connections can look just fine and still have hidden corrosion under them.
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