Starter / wiring issue

[Dhayes]

OK guys. This has happened the last few times letting the car run.

Seems to start fine cold. After running or driving for a bit and it gets hot. When you go to start it again it seems like the battery is dying or dead. Turns over 1/2 to 1 full revolution and stops. Power and ground wires get extremely hot. Battery and terminals are new as of today. Starter is unknown.

Does it sound like a dying starter and the heat ( long tube headers not wrapped) is causing this. I doubt it is a ground issue because I have a heavy gauge wire going from the negative battery to a bolt on the starter.

My brother is home on leave in like 2 weeks so I have to button this up real quick.

Thanks for your wisdom in advance ;)



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[94Blackbird]

You have a bad connection somewhere. The reason your wires are getting hot is because there is too much resistance in the circuit somewhere. I would start by checking all the terminal connections for corrosion. It is possible that there is a problem internally with the starter, but from a diagnosis stand point, start with the connections.

Also, what do you mean you have a cable from a bolt on the starter to bat neg? The starter motor and solenoid ground out through the motor case.

[Dhayes]

Also, what do you mean you have a cable from a bolt on the starter to bat neg? The starter motor and solenoid ground out through the motor case.

Terminals and battery are new. Good connections at the starter also. The cable I ran because when I first put the motor back in it had a similar issue which was fixed with an added ground. Now the problem is back even with the extra ground. And like I said when I first start it cold it starts perfectly fine. No hesitation or slow turning. Just after it gets warm.


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[94Blackbird]

Terminals and battery are new. Good connections at the starter also. The cable I ran because when I first put the motor back in it had a similar issue which was fixed with an added ground. Now the problem is back even with the extra ground. And like I said when I first start it cold it starts perfectly fine. No hesitation or slow turning. Just after it gets warm.


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And the fact that it starts perfectly cold is what leads me to believe you have a bad connection somewhere. Did you check the other grounds off the battery? It could be one of those connections is causing a problem with the battery that could lead to your hot start issues. There should be two grounds coming off the battery, one to the right front shock tower, and one to the engine block.

[Dhayes]

And the fact that it starts perfectly cold is what leads me to believe you have a bad connection somewhere. Did you check the other grounds off the battery? It could be one of those connections is causing a problem with the battery that could lead to your hot start issues. There should be two grounds coming off the battery, one to the right front shock tower, and one to the engine block.

Yes I have 2 coming off of the negative battery terminal. 1 going right next to the Shock Tower the next going to a bolt on the block side of the pass motor Mount. Plus the one I ran to fix the initial issue. Starter casing has a good clean surface to the block. All connections have been removed cleaned and put back.

The next thing I noticed is where the connections are on the coil of the starter, that black piece the connections are on twists inside the housing maybe a 1/8" either way. Bad connection inside the coil?

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[94Blackbird]

Yes I have 2 coming off of the negative battery terminal. 1 going right next to the Shock Tower the next going to a bolt on the block side of the pass motor Mount. Plus the one I ran to fix the initial issue. Starter casing has a good clean surface to the block. All connections have been removed cleaned and put back.

The next thing I noticed is where the connections are on the coil of the starter, that black piece the connections are on twists inside the housing maybe a 1/8" either way.

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That could be your issue right there. I don't believe that any part of the starter is supposed to be loose enough to move. Now I understand why you were asking if it was a dying starter. I would think that you would have intermittant cold start problems too if the connection were loose though... hmm...

Either way you could be looking at a new starter at this point. I don't believe that the terminal connections are supposed to be able to move in relation to the starter solenoid. If it's loose enough to move, it could be loose enough to cause a connection issue and heat everything up.

[Dhayes]

That could be your issue right there. I don't believe that any part of the starter is supposed to be loose enough to move. Now I understand why you were asking if it was a dying starter. I would think that you would have intermittant cold start problems too if the connection were loose though... hmm...

Either way you could be looking at a new starter at this point. I don't believe that the terminal connections are supposed to be able to move in relation to the starter solenoid. If it's loose enough to move, it could be loose enough to cause a connection issue and heat everything up.

Well the car is only been started maybe 2 dozen times since the build and I never noticed that being loose until today when I was checking for a loose connection. I figured I would probably need to do the starter but didn't know that there was a wiring issue also and if so it might fry the new starter.

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[94Blackbird]

Well the car is only been started maybe 2 dozen times since the build and I never noticed that being loose until today when I was checking for a loose connection. I figured I would probably need to do the starter but didn't know that there was a wiring issue also and if so it might fry the new starter.

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Makes me glad to hear that some people still believe in proper diagnosis!

If all the connections have been checked and cleaned, then I would say that replacing the starter solenoid (if possible) or the starter if it's an unservicable unit will most likely solve the issue, as that is the only place it sounds like there may be a problem. I'm pretty sure that there shouldn't be any movement in the components.

[Dhayes]

Makes me glad to hear that some people still believe in proper diagnosis!

If all the connections have been checked and cleaned, then I would say that replacing the starter solenoid (if possible) or the starter if it's an unservicable unit will most likely solve the issue, as that is the only place it sounds like there may be a problem. I'm pretty sure that there shouldn't be any movement in the components.

Yea bandaids only last a little bit. Lol. Best to do it right the first time and rule out other possibilities. And a little reassurance goes a long way. Thanks for the help. Hopefully starters are not too pricey and ill have her in tomorrow.

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[94Blackbird]

I think they are about 130 or more.

[Dhayes]

I think they are about 130 or more.

Ouch. Just called 150 reman not in stock will be in tomorrow 170 new plus core and 2 days out.

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[94Blackbird]

Ouch. Just called 150 reman not in stock will be in tomorrow 170 new plus core and 2 days out.

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Yeah, ouch.