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Old 05-13-2011, 11:12 PM
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Electrical Problems

Well as some of you know I recently got done with my rebuild and now I am having some electrical problems. Well since I started my car for the first time, the stereo no longer works it wont even turn on, the clock doesn't turn on anymore, and the electric locks only work when the car is running none of these bothered me very much so I didn't do anything, now today my RPM gauge bounces all over as soon as I get anywhere around 4k rpms and I can no longer roll down the pass side window from my side which I could earlier today lol.

I checked all the grounds and they all seem to be good, any help would be greatly appreciated.
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Old 05-14-2011, 02:12 AM
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Re: Electrical Problems

1. Short to ground
2. Short to power
3. High resistance
4. Open in circuit


These are the 4 possible electrical problems. Start by doing a visual inspection. Check for frayed or corroded wires, loose connections, and corrosion on terminals and connectors.

Then check fuses and relays.

If you still haven't found it, pull up some wiring diagrams and find the circuit that incorporates all the components you're having problems with, and check those circuits with a DMM. Concentrate on fuses, relays, switches, loads and grounds on those circuits.

I'd first concentrate on the electrical circuits/wires that you disconnected, reconnected, touched, or screwed with recently. Might also want to check your battery charge and alternator charging output while you're at it, make sure you're getting sufficient power.


Electrical diagnosis 101. Class dismissed.
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Old 05-14-2011, 04:54 AM
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Re: Electrical Problems

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Originally Posted by havikprelude View Post
I'd first concentrate on the electrical circuits/wires that you disconnected, reconnected, touched, or screwed with recently.
Haha great, only everyone in the engine bay. But thanks for the help, when it comes to electronics I am lost lol
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Old 05-14-2011, 09:17 AM
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Re: Electrical Problems

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Originally Posted by keeganhmorgan View Post
Haha great, only everyone in the engine bay. But thanks for the help, when it comes to electronics I am lost lol
I figured that would probably be the case, but I had to say it. As a general rule, when something was working fine then you go and mess with it and now it is malfunctioning, the component(s) you messed with is the most likely cause.

Although in your case that advice isn't as helpful as it normally is. I wish I could be more helpful than that, but there's not much more I can do for you. I no longer have access to the resources I did in college, so I can't study any wiring diagrams to help you narrow down the problem. And I can't really think of any common components or circuits that all the issues you're having have in common of the top of my head.

Although I haven't checked the online manual. Not sure if it has wiring diagrams.
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Old 05-14-2011, 02:44 PM
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Re: Electrical Problems

I know it's a long shot, but the tachometer malfunctioning could be a result of your VSS going bad. If it just randomly started happening and wasn't simultaneous with the other electronic issues.
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Old 05-14-2011, 03:08 PM
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Re: Electrical Problems

Quote:
Originally Posted by havikprelude View Post
I figured that would probably be the case, but I had to say it. As a general rule, when something was working fine then you go and mess with it and now it is malfunctioning, the component(s) you messed with is the most likely cause.

Although in your case that advice isn't as helpful as it normally is. I wish I could be more helpful than that, but there's not much more I can do for you. I no longer have access to the resources I did in college, so I can't study any wiring diagrams to help you narrow down the problem. And I can't really think of any common components or circuits that all the issues you're having have in common of the top of my head.

Although I haven't checked the online manual. Not sure if it has wiring diagrams.
Na man you have been plenty helpful thanks for everything man... Just gotta mess around til I find whats wrong I guess, Actually I might know something... my thermo unit isn't connected because I broke it somehow and I need to wait til a new one gets here, but the wire touched the block or transmission or something that was hot a couple times and my temp gauge would freak out, could that have anything to do with it?

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Originally Posted by RandallSharp View Post
I know it's a long shot, but the tachometer malfunctioning could be a result of your VSS going bad. If it just randomly started happening and wasn't simultaneous with the other electronic issues.
I don't know much about the VSS but wouldn't my speedo freak out also if it was because of that?
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Idaho
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Old 05-14-2011, 03:28 PM
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Re: Electrical Problems

I don't know much about the VSS but wouldn't my speedo freak out also if it was because of that?[/QUOTE]

Sometimes, when they are in the process of going bad, they will cause weird things to happen. Once they die, nothing will work period. Like I said, it's a long shot, but I've seen weirder things happen, lol. I would stick with Havik's ideology first.
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Old 05-14-2011, 03:32 PM
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Re: Electrical Problems

Quote:
Originally Posted by RandallSharp View Post
Sometimes, when they are in the process of going bad, they will cause weird things to happen. Once they die, nothing will work period. Like I said, it's a long shot, but I've seen weirder things happen, lol. I would stick with Havik's ideology first.
Yeah, I think I might need to buy a new battery ground because the old one a lot of wires were exposed until I just put electrical tape over them.
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Quote:
Originally Posted by havikprelude View Post
Idaho
where "driving" is synonomous with "rally"



Seriously...wtf is up with your roads?
Quote:
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From to
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Old 05-14-2011, 03:34 PM
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Re: Electrical Problems

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Originally Posted by keeganhmorgan View Post
Yeah, I think I might need to buy a new battery ground because the old one a lot of wires were exposed until I just put electrical tape over them.
I would definitely ensure everything has power and ground first. That is the most common problem with things like that. If you don't have the completed circuit, you will get shorts like Havik mentioned.
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Old 05-14-2011, 04:54 PM
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Re: Electrical Problems

Just FYI, the battery ground has an exposed section from factory. Stupid I know, but there it is.

The ground on your thermostat is pretty much the ground for the engine block. So if that doesn't have a good enough connection with the block, it could cause most of the problems you're talking about. Wait til you fix it then get back to us.
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