C4 Tech/Performance L98 Corvette and LT1 Corvette Technical Info, Internal Engine, External Engine

Please help identify noise?

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Old Oct 12, 2020 | 12:52 PM
  #21  
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I have a bad habit that came after I started buying Corvettes. I keep the original parts and have the re-built for me when needed. If is a safe way to keep the old parts and ensure you have the right part when you need it. My 1968 is now almost 53 years old and some of the parts are getting harder to find.

That sound sure was similar to the sound of the Power Steering pump. I might have removed the serpentine belt to see if the noise went away from bearings in the alternator. Do you have any idea of whether or not the alternator was producing any current?

I have been storing the original parts for my C3 and my C4. Every time I remove a component it gets cleaned and stored. A good example is my K66 Ignition system from my 1968 C3, I had it rebuilt and ran it then I pulled the parts and boxed them all up. I have an aftermarket ignition system including the distributor so all the factory parts are bagged, tagged and stored. I still have the 40 amp alternator the C3 came with and it is in working condition in a vacuum bag.

Be absolutely sure your battery connections are clean and free of corrosion. At some point you might take a Multi-meter and see if your present alternator is making any AC mixed in with your DC. If the alternator lets some AC get through or around the diode bridge then it can cause heck for the ECM and the battery. Before using the Car you should charge the battery up completely and then check the electrolyte levels. Some batteries are never fully charged and they loose capacity quickly.
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Old Oct 12, 2020 | 02:34 PM
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Originally Posted by TXGS507
Also noticed this when i removed... The plastic had been smashed when the PO installed.. The wires themselves seem to be intact.. No fraying, copper showing through the insulation. Thoughts?
Incredibly common. Same thing happened when I went to change my own alternator. These connectors are over 20 years old, and have had to live in a very harsh environment. Fortunately, the connector is available at any auto parts store. The part number you're looking for is ACDelco PT494, but AutoZone has them as Duralast 237.
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Old Oct 12, 2020 | 03:25 PM
  #23  
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Originally Posted by Nomake Wan
Incredibly common. Same thing happened when I went to change my own alternator. These connectors are over 20 years old, and have had to live in a very harsh environment. Fortunately, the connector is available at any auto parts store. The part number you're looking for is ACDelco PT494, but AutoZone has them as Duralast 237.
Good to know... I am going to tape the f*** out of it ( electrical tape)

Think i will also buy a new battery... just because... #reallycheapinsurance
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Old Oct 12, 2020 | 04:09 PM
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Originally Posted by TXGS507
Good to know... I am going to tape the f*** out of it ( electrical tape)
You've got a nice GS. Do the correct repair. Get the shell or pigtail and just repin it using your current wires.
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Old Oct 13, 2020 | 10:06 AM
  #25  
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Originally Posted by ChumpVette
You've got a nice GS. Do the correct repair. Get the shell or pigtail and just repin it using your current wires.
You are correct Chump.... Ordered on Ebay...

I did not want to cut, splice wires, but yeah, i can simply re pin it....
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Old Oct 13, 2020 | 05:04 PM
  #26  
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Brand new AC Delco Alt installed...
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Old Oct 13, 2020 | 06:13 PM
  #27  
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Nice. Good job. Sounds goooood!
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Old Oct 17, 2020 | 11:55 AM
  #28  
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I bought a alternator for my C3 at Pep Boys and 20 minutes after installing it and running the engine the front bearing popped out and shorted it out big time. I am lucky I did not have a fire because of it.

After this experience I stay away from in-expensive rebuilds unless I do them myself.
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Old Oct 18, 2020 | 10:42 AM
  #29  
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This AC Delco Alt that i bought was new.... It had been sitting on a shelf for years... dusty as hell... Works well thus far...
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Old Oct 18, 2020 | 01:23 PM
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Did you get the connector fixed?
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Old Oct 19, 2020 | 08:57 AM
  #31  
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Originally Posted by ChumpVette
Did you get the connector fixed?
I did , easy peasy..
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Old Oct 19, 2020 | 08:15 PM
  #32  
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Originally Posted by TXGS507
I did , easy peasy..

Feels good to do the proper fix, doesn’t it?
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