cloneman315
Active member
Re: One last shot... Breaking up!
It very hard to tell without being there and seeing it,explain what you mean
It very hard to tell without being there and seeing it,explain what you mean
One last shot... Breaking up!
- Thread starter BoostedSUV
- Start date
WyoSyclone
Active member
Re: One last shot... Breaking up!
Just got back from a movie... could be that when the ignition is off it takes that circuit to ground... try it again with the switch in the 'on' position... I'll look at the switch schematics tomorrow.
Just got back from a movie... could be that when the ignition is off it takes that circuit to ground... try it again with the switch in the 'on' position... I'll look at the switch schematics tomorrow.
SloGN
9Sec Alky V6
Re: One last shot... Breaking up!
there is other things in the cab thats completting the circuit from hot to ground in the same manner that the hood light was doing.
Ponder this---------- A light bulb is nothing but a very small wire that is placed in between the hot and the ground. since it's a small wire it will complete the circuit. The bulb actually lights up due to the amount of current passing thru the small wire. since the light bulb is under vacuum the small wire is able to pass a ample amount of current to make the small wire/filament to glow and produce light.
sorry to rant:tup:
there is other things in the cab thats completting the circuit from hot to ground in the same manner that the hood light was doing.
Ponder this---------- A light bulb is nothing but a very small wire that is placed in between the hot and the ground. since it's a small wire it will complete the circuit. The bulb actually lights up due to the amount of current passing thru the small wire. since the light bulb is under vacuum the small wire is able to pass a ample amount of current to make the small wire/filament to glow and produce light.
sorry to rant:tup:
WyoSyclone
Active member
Re: One last shot... Breaking up!
You could have a bad diode tree in the alternator, and as Dig suggested a while back, possibly a bad fusible link. You can go to GM, or just a parts store and get new fusible links. I'd take the alternator off and take it to an alternator shop and have them test it.... they'll be able to tell you if it's got a problem.
You could have a bad diode tree in the alternator, and as Dig suggested a while back, possibly a bad fusible link. You can go to GM, or just a parts store and get new fusible links. I'd take the alternator off and take it to an alternator shop and have them test it.... they'll be able to tell you if it's got a problem.
WyoSyclone
Active member
Re: One last shot... Breaking up!
Yup, that's why when he removed the hood light wire it changed.... if the doors to the truck are open it will do the same thing via the interior light.... seems confusing but it's pretty logical when you start thinking about it.
Yup, that's why when he removed the hood light wire it changed.... if the doors to the truck are open it will do the same thing via the interior light.... seems confusing but it's pretty logical when you start thinking about it.
BoostedSUV
Active member
Re: One last shot... Breaking up!
Yeah I'm sitting here thinking about and it's making sense... Hard to figure out how a wire can "feed" ground to a positive source and not create an issue.
I'm going to have the ALT checked tomorrow. I did try the truck with the plug dissconected to the alt and I still got 19volts at the dist block (12.02 at battery), and the truck was still breaking up. I still had the cables connected to the alt, would AC ripple still be produced with out the plug in the side of it?
Yeah I'm sitting here thinking about and it's making sense... Hard to figure out how a wire can "feed" ground to a positive source and not create an issue.
I'm going to have the ALT checked tomorrow. I did try the truck with the plug dissconected to the alt and I still got 19volts at the dist block (12.02 at battery), and the truck was still breaking up. I still had the cables connected to the alt, would AC ripple still be produced with out the plug in the side of it?
WyoSyclone
Active member
Re: One last shot... Breaking up!
Yup.. gotta remove the large wires from the post on the back.
Yup.. gotta remove the large wires from the post on the back.
SloGN
9Sec Alky V6
Re: One last shot... Breaking up!
ok
I have done some more thinking:tup:
Is the acc bracket that holds the alt and power steering pump painted or powercoated? If so the ground contact between the alt case/bracket to the block could be compromised. In order for the alt to charge the battery you have to complete the circuit from the hot side thru the wire/juction block back to the battery. then you have to go from the ground (outside alt case) thru the bracket then into the block, thru the neg side of the battery.
i understand that when you checked the connections with a ohm meter it checked good. but you need to understand that your dealing with a ver small amount of power your passing thru the wire with the meter.
So that means as the more power you try to pass thru the wire/bad connection the greater the resistance will be. Along with that the more heat it creates.
The root of all evil in electricity is a bad connection:tup:
ok
I have done some more thinking:tup:
Is the acc bracket that holds the alt and power steering pump painted or powercoated? If so the ground contact between the alt case/bracket to the block could be compromised. In order for the alt to charge the battery you have to complete the circuit from the hot side thru the wire/juction block back to the battery. then you have to go from the ground (outside alt case) thru the bracket then into the block, thru the neg side of the battery.
i understand that when you checked the connections with a ohm meter it checked good. but you need to understand that your dealing with a ver small amount of power your passing thru the wire with the meter.
So that means as the more power you try to pass thru the wire/bad connection the greater the resistance will be. Along with that the more heat it creates.
The root of all evil in electricity is a bad connection:tup:
BoostedSUV
Active member
Re: One last shot... Breaking up!
Ok good! (in a way) That means I haven't ruled out alternator yet. When I tested for ACV I appeared to have a higher level than normal. As long as I had the setting correct on VOM. There are so many settings on my meter and I haven't gotten it down pat yet aside from the basics.
I was reading about AC ripple and that could definitely cause what I'm seeing according to tech guides, and that would be very RPM specific. Crossing my fingers again.... hopefully for the last time! I'm going to eliminate the ALT tomorrow and see what happens.
Ok good! (in a way) That means I haven't ruled out alternator yet. When I tested for ACV I appeared to have a higher level than normal. As long as I had the setting correct on VOM. There are so many settings on my meter and I haven't gotten it down pat yet aside from the basics.
I was reading about AC ripple and that could definitely cause what I'm seeing according to tech guides, and that would be very RPM specific. Crossing my fingers again.... hopefully for the last time! I'm going to eliminate the ALT tomorrow and see what happens.
BoostedSUV
Active member
Re: One last shot... Breaking up!
Wow, I never thought about that. The ALT bracket is painted as well as the engine block. I have a ground cable going through the lower ALT bolt that connects to frame though. I never thought of cleaning up the contact points of the alt bracket when I assembled the motor? It would be pretty easy for me to unbolt the accessory bracket and grind the paint off the contact points on the head and block.
Wow, I never thought about that. The ALT bracket is painted as well as the engine block. I have a ground cable going through the lower ALT bolt that connects to frame though. I never thought of cleaning up the contact points of the alt bracket when I assembled the motor? It would be pretty easy for me to unbolt the accessory bracket and grind the paint off the contact points on the head and block.
cloneman315
Active member
Re: One last shot... Breaking up!
i think its the alt not grounds
i think its the alt not grounds
SloGN
9Sec Alky V6
Re: One last shot... Breaking up!
well with it connected like that it may not affect the battery. but the fire wall ground is being feed from the block/heads and is relying on the ground passing thru alt bracket then into the block. so ya never know.
i might be getting into splitting hairs when it comes to electrical circuits. sorry but i work in electronics everyday so my mind is already geared that way:tup:
well with it connected like that it may not affect the battery. but the fire wall ground is being feed from the block/heads and is relying on the ground passing thru alt bracket then into the block. so ya never know.
i might be getting into splitting hairs when it comes to electrical circuits. sorry but i work in electronics everyday so my mind is already geared that way:tup:
BoostedSUV
Active member
Re: One last shot... Breaking up!
All it takes is one "stupid thought" to make all the difference in the world. Keep them coming, I value them all and nothing is out of the question. I'm fairly convinced at this point that my problem is electrical. whether it be ground, fusible link, alt etc.... time will tell! :tup:
All it takes is one "stupid thought" to make all the difference in the world. Keep them coming, I value them all and nothing is out of the question. I'm fairly convinced at this point that my problem is electrical. whether it be ground, fusible link, alt etc.... time will tell! :tup:
BoostedSUV
Active member
Re: One last shot... Breaking up!
could the fusible links cause an issue? Thinking about changing or eliminating them....
could the fusible links cause an issue? Thinking about changing or eliminating them....
SloGN
9Sec Alky V6
Re: One last shot... Breaking up!
i think so as well but i want to double check everything.
The thing is i doubt that when he has the alt checked at autozone,advance auto etc. They will most likely say it's good. The reason i say that is cause they mostly concentrate on the amount of voltage and amps the alt produces not the amount of A/C ripple that the rotor and three separate windings create.
A alt is a 3 phase system. the dioides cancel out 2 of the a/c phases and leaves one that is rectified and voila dc voltage is produced.
In my thinking is if one of the phases fail there will not be any canceling out of the phases. so that will leave 2 phases of a/c voltage that gets passed thru the rectifier. I guess the alt can still make Dc voltage with phase not working. but i would think it would have lost 1/3 0f it's power produceing power.
I'll need to talk with Richard on this to confirm i'm thinking of this in the correct attitude.
it's geting late and i need to sleep.
i think so as well but i want to double check everything.
The thing is i doubt that when he has the alt checked at autozone,advance auto etc. They will most likely say it's good. The reason i say that is cause they mostly concentrate on the amount of voltage and amps the alt produces not the amount of A/C ripple that the rotor and three separate windings create.
A alt is a 3 phase system. the dioides cancel out 2 of the a/c phases and leaves one that is rectified and voila dc voltage is produced.
In my thinking is if one of the phases fail there will not be any canceling out of the phases. so that will leave 2 phases of a/c voltage that gets passed thru the rectifier. I guess the alt can still make Dc voltage with phase not working. but i would think it would have lost 1/3 0f it's power produceing power.
I'll need to talk with Richard on this to confirm i'm thinking of this in the correct attitude.
it's geting late and i need to sleep.
BoostedSUV
Active member
Re: One last shot... Breaking up!
^I agree... Last time I took the alt to autozone they told me its putting out plenty of "juice" so it's fine! If is indeed my Alt that is causing my issues that would confirm that theory. That's kind of why at this point I want to test things for problems before I start throwing more parts at it. I want to prove or see with out a doubt a problem before I start replacing expensive parts.
A LOT of people suggested injectors while others till had their doubts. I shelled out $340 to test that theory for it to be essentially a "waste" and a busted theory because I still had the problem. However I do have better more tunable injectors so it wasn't a total waste. Kinda of the same thing with guys pointing to bad Fuel pump... Changed it (glad I did!) But it wasn't my problem. I'm already over $500 in "guesses" that will benefit overall and improve my truck in the long run. So at this point I want to prove something Is bad before I change it if possible. Be patient, I'm working on it :tup:
^I agree... Last time I took the alt to autozone they told me its putting out plenty of "juice" so it's fine! If is indeed my Alt that is causing my issues that would confirm that theory. That's kind of why at this point I want to test things for problems before I start throwing more parts at it. I want to prove or see with out a doubt a problem before I start replacing expensive parts.
A LOT of people suggested injectors while others till had their doubts. I shelled out $340 to test that theory for it to be essentially a "waste" and a busted theory because I still had the problem. However I do have better more tunable injectors so it wasn't a total waste. Kinda of the same thing with guys pointing to bad Fuel pump... Changed it (glad I did!) But it wasn't my problem. I'm already over $500 in "guesses" that will benefit overall and improve my truck in the long run. So at this point I want to prove something Is bad before I change it if possible. Be patient, I'm working on it :tup:
thunderace31
New member
Re: One last shot... Breaking up!
Just a thought but could the cam have jump timing I just did a T-chain on a guys truck and it was doing similar things to your TY. Had a bad miss around 2000 rpm then cleaned up then wouldnt run at all around 3500-4000
Maybe even the rockers went out of whack ??
I dont you situation is on my mind all the time I dont know that much about these trucks but have been playing with cars my Whole life. Seen some strange crap to. Just wish you could find the issues.
Just a thought but could the cam have jump timing I just did a T-chain on a guys truck and it was doing similar things to your TY. Had a bad miss around 2000 rpm then cleaned up then wouldnt run at all around 3500-4000
Maybe even the rockers went out of whack ??
I dont you situation is on my mind all the time I dont know that much about these trucks but have been playing with cars my Whole life. Seen some strange crap to. Just wish you could find the issues.
BoostedSUV
Active member
Re: One last shot... Breaking up!
I've had the motor of the truck and rebuild 4 times (don't ask) and this problem dates back to 2006 so I really doubt that's my issue. Maybe a few rockers out of adjustment but even that I would highly doubt could be causing this. If indeed that would be the case I would pull the plug... If the motor is coming out again it's not going back in! Lol
I've had the motor of the truck and rebuild 4 times (don't ask) and this problem dates back to 2006 so I really doubt that's my issue. Maybe a few rockers out of adjustment but even that I would highly doubt could be causing this. If indeed that would be the case I would pull the plug... If the motor is coming out again it's not going back in! Lol
WyoSyclone
Active member
Re: One last shot... Breaking up!
x2.. that's why I recommended a good alternator shop instead. And Matt should tell the shop he thinks the diode tree may have a problem.. that way they'll pay more attention to it.
x2.. that's why I recommended a good alternator shop instead. And Matt should tell the shop he thinks the diode tree may have a problem.. that way they'll pay more attention to it.
WyoSyclone
Active member
Re: One last shot... Breaking up!
....every step along the way can add resistance, which in the end can create a problem... this is why I had asked earlier if the brackets had been powder-coated.... I remember a thread from another member where it had caused issues for him.
....every step along the way can add resistance, which in the end can create a problem... this is why I had asked earlier if the brackets had been powder-coated.... I remember a thread from another member where it had caused issues for him.