70 cutlass jumpstarts but won’t turn over by itself.

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Old May 17th, 2023, 09:04 PM
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You have an ammeter with an amp clamp to measure amperage?
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Old May 17th, 2023, 09:07 PM
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Originally Posted by jefferyc2000@gmail.com
negative terminal
I didn't realize it was the ground wire.
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Old May 17th, 2023, 09:09 PM
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Replaced positive wire. Ground wire is good.
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Old May 17th, 2023, 09:12 PM
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Does the car have convertible or hardtop carpeting?...
🥴
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Old May 17th, 2023, 09:15 PM
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Originally Posted by no1oldsfan
Does the car have convertible or hardtop carpeting?...
🥴
um hardtop carpeting. I believe. It’s a vinyl top cutlass S. I’m not entirely certain on the diagnosis. First time cutlass owner.
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Old May 17th, 2023, 09:15 PM
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Double checking the current status here so we’re on same page.
Car won’t start on its own battery but will start when jumped with battery pack. Is that the current status?
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Old May 17th, 2023, 09:17 PM
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Originally Posted by no1oldsfan
does the car have convertible or hardtop carpeting?...
🥴
ha ha!
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Old May 17th, 2023, 09:18 PM
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Originally Posted by no1oldsfan
Does the car have convertible or hardtop carpeting?...
🥴
Just a little joke. I had to...
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Old May 17th, 2023, 09:20 PM
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Originally Posted by Vintage Chief
Double checking the current status here so we’re on same page.
Car won’t start on its own battery but will start when jumped with battery pack. Is that the current status?
battery pack no longer jumps the car. Just purchased a remanufactured starter and will try it and let you guys know
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Old May 17th, 2023, 09:22 PM
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Originally Posted by jefferyc2000@gmail.com
battery pack no longer jumps the car. Just purchased a remanufactured starter and will try it and let you guys know
got my dads truck in place and it jump started the vehicle where the pack wouldn’t. This was earlier when I needed to move into driveway. Last test of the starter was when I changed the positive cable. Starter turns over but then won’t crank the flywheel.
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Old May 17th, 2023, 09:22 PM
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Originally Posted by jefferyc2000@gmail.com
battery pack no longer jumps the car. Just purchased a remanufactured starter and will try it and let you guys know
OK Good luck!
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Old May 17th, 2023, 09:23 PM
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Originally Posted by Vintage Chief
OK Good luck!
making it happen.
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Old May 17th, 2023, 09:25 PM
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Originally Posted by jefferyc2000@gmail.com
battery pack no longer jumps the car. Just purchased a remanufactured starter and will try it and let you guys know
When are you going to put in the other starter ? Bench test the old starter again.
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Old May 17th, 2023, 09:27 PM
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Originally Posted by no1oldsfan
Just a little joke. I had to...
you know what I pulled the carpeting out and it fired right up.
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Old May 17th, 2023, 09:28 PM
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Sounds like either the starter or yes it “could” be battery. Can’t really test cranking amperage of battery without an ammeter though. You can take the battery to any auto store to validate under load amperage draw. Hope the starter works out.
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Old May 17th, 2023, 09:28 PM
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Originally Posted by jefferyc2000@gmail.com
you know what I pulled the carpeting out and it fired right up.
Must have been some starter safety switch in the carpet I didn’t see
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Old May 17th, 2023, 09:28 PM
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Originally Posted by OLDSter Ralph
When are you going to put in the other starter ? Bench test the old starter again.
Next ten minutes
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Old May 17th, 2023, 09:29 PM
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Originally Posted by jefferyc2000@gmail.com
you know what I pulled the carpeting out and it fired right up.
Well played…well played.
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Old May 18th, 2023, 12:02 AM
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Originally Posted by jefferyc2000@gmail.com
Next ten minutes
update. Turned into 3 hours. Starter was in a bind. Solved and whatnot. Alternator is getting tackled tomorrow. I’ll find out what’s wrong. But I got it started. Turned the key and it runs. Thanks for the help guys.
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Old May 18th, 2023, 09:47 AM
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Originally Posted by jefferyc2000@gmail.com
update. Turned into 3 hours. Starter was in a bind. Solved and whatnot. Alternator is getting tackled tomorrow. I’ll find out what’s wrong. But I got it started. Turned the key and it runs. Thanks for the help guys.
starter keeps getting in a bind. Unsure from here. I put the battery on the charger, removed the flywheel inspection plate and watched starter engage while friend tried to start. Probably a current issue, will be warrantying my battery from Costco or replacing the alternator today.
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Old May 18th, 2023, 10:30 AM
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Originally Posted by jefferyc2000@gmail.com
starter keeps getting in a bind. Unsure from here. I put the battery on the charger, removed the flywheel inspection plate and watched starter engage while friend tried to start. Probably a current issue, will be warrantying my battery from Costco or replacing the alternator today.
Pursuant to last night's discussion w/ the added information you provided today; again, it is possible to read 12V+ on a battery with limited ability to provide CCA - which might be the case. If you're not delivering amperage, a chance the starter might appear to be binding or is it incapable of providing the amperage required? As you suggested, a possible current issue. What you need is information on the battery to perform a good diagnosis and know where you stand on troubleshooting moving forward. I don't know if Costco will load-test the battery for you? I suspect they should if they're going to honor a warranty. Personally, I'd stopped by an automotive parts/supply store on my way to Costco and ask them to load test the battery; then, depending on the outcome of the load-test, you'll have a better indication if it was current (amperage) related.
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Old May 18th, 2023, 10:34 AM
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Originally Posted by Vintage Chief
Pursuant to last night's discussion w/ the added information you provided today; again, it is possible to read 12V+ on a battery with limited ability to provide CCA - which might be the case. If you're not delivering amperage, a chance the starter might appear to be binding or is it incapable of providing the amperage required? As you suggested, a possible current issue. What you need is information on the battery to perform a good diagnosis and know where you stand on troubleshooting moving forward. I don't know if Costco will load-test the battery for you? I suspect they should if they're going to honor a warranty. Personally, I'd stopped by an automotive parts/supply store on my way to Costco and ask them to load test the battery; then, depending on the outcome of the load-test, you'll have a better indication if it was current (amperage) related.
so Costco has a 3 year warranty and I’ve spoken to several auto employees there and no they do not load test or even check the voltage on a battery you say is faulty. There’s no Help from them other than getting a free battery 2 and a half years In. I’ve had the battery on the tender all night. When the vehicle was running I hit the throttle from the Carb and watched the voltage on battery jump up to 13.5 V and rapidly decreased after letting off.
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Old May 18th, 2023, 10:39 AM
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Originally Posted by jefferyc2000@gmail.com
so Costco has a 3 year warranty and I’ve spoken to several auto employees there and no they do not load test or even check the voltage on a battery you say is faulty. There’s no Help from them other than getting a free battery 2 and a half years In. I’ve had the battery on the tender all night. When the vehicle was running I hit the throttle from the Carb and watched the voltage on battery jump up to 13.5 V and rapidly decreased after letting off.
Remember, voltage is NOT amperage. Therefore, voltage alone is NOT an indicator of delivering amperage. Stop by an auto parts/supply store on your way to Costco and load-test your battery so you can make an informed decision regarding troubleshooting. A load-test is free and takes <5 minutes.
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Old May 18th, 2023, 10:40 AM
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Sounds more and more like an alternator problem to me. At idle you should read 14+.

I say go ahead and get a new battery while you can. Three more years is a good thing.
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Old May 18th, 2023, 10:49 AM
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Originally Posted by jefferyc2000@gmail.com
so Costco has a 3 year warranty and I’ve spoken to several auto employees there and no they do not load test or even check the voltage on a battery you say is faulty. There’s no Help from them other than getting a free battery 2 and a half years In. I’ve had the battery on the tender all night. When the vehicle was running I hit the throttle from the Carb and watched the voltage on battery jump up to 13.5 V and rapidly decreased after letting off.
charged the battery overnight. Voltage at rest 12.5V
Voltage while Running 12.65
charging battery solved the issue after we replaced the starter and solenoid and installed the replacement positive cable to starter. Only current issue is the charging system. So the battery after sitting on the tender all night is still not charged fully and then turning the key easily cranked the motor over. To avoid future failure everyone agrees the alternator should be tested under load att AutoZone and then replace if necessary.
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Old May 18th, 2023, 10:50 AM
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Originally Posted by no1oldsfan
Sounds more and more like an alternator problem to me. At idle you should read 14+.

I say go ahead and get a new battery while you can. Three more years is a good thing.
definitely but it’s only a month old just a shame haha
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Old May 18th, 2023, 10:53 AM
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Your alternator is not putting out the voltage it should be.
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Old May 18th, 2023, 10:56 AM
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Originally Posted by no1oldsfan
Your alternator is not putting out the voltage it should be.
called my location AutoZone and they said they
do not test amperage on batteries, but they will bench test the alternator.
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Old May 18th, 2023, 11:13 AM
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Originally Posted by jefferyc2000@gmail.com
called my location AutoZone and they said they
do not test amperage on batteries, but they will bench test the alternator.
anyone know where to start on replacing the alternator.
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Old May 18th, 2023, 11:15 AM
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Originally Posted by jefferyc2000@gmail.com
starter keeps getting in a bind. Unsure from here. I put the battery on the charger, removed the flywheel inspection plate and watched starter engage while friend tried to start. Probably a current issue, will be warrantying my battery from Costco or replacing the alternator today.
Originally Posted by jefferyc2000@gmail.com
so Costco has a 3 year warranty and I’ve spoken to several auto employees there and no they do not load test or even check the voltage on a battery you say is faulty. There’s no Help from them other than getting a free battery 2 and a half years In. I’ve had the battery on the tender all night. When the vehicle was running I hit the throttle from the Carb and watched the voltage on battery jump up to 13.5 V and rapidly decreased after letting off.
It may not be a bind on the starter, it might be a low battery. The battery needs to be fully charged. When you hear the solenoid click, its shuttling the starter gear to engage the flex plate teeth. If the engine doesn't crank (rotate), then you look at the battery charge. It takes a lot more "juice" to turn the engine over (rotate) than to shuttle the starter gear (solenoid). This is usually a sign of corroded battery terminal, low battery charge or a bad battery. "Someone" might analyze this as "the starter binding" because it doesn't turn the engine over..

If you change batteries, clean (with sand paper or green Scotch-Brite) the battery posts and inside of the cable ends until they are shiney silver. A battery tender (1 to 1.5 AMP) is a very low power charger. It MAINTAINS a full charge, but it can take many more hours to fully charge a partially depleted battery. A typical "Trickle charger is 2 AMPS. A typical battery charger is 4 AMP to 10 AMP charging rate.

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Old May 18th, 2023, 11:20 AM
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Originally Posted by jefferyc2000@gmail.com
called my location AutoZone and they said they
do not test amperage on batteries, but they will bench test the alternator.
What RPM does your engine idle at ? Find a place that CAN load test your battery. One thing at a time.
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Old May 18th, 2023, 11:28 AM
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Originally Posted by jefferyc2000@gmail.com
called my location AutoZone and they said they
do not test amperage on batteries, but they will bench test the alternator.
They may not test the amperage, but they will load test it. As suggested above, take your battery there and tell them you need it tested.
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Old May 18th, 2023, 11:30 AM
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Originally Posted by 72455
They may not test the amperage, but they will load test it. As suggested above, take your battery there and tell them you need it tested.
okay I’ll do that as well. Just removed the alternator as well to test.
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Old May 18th, 2023, 11:30 AM
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Call O Reilly
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Old May 18th, 2023, 11:35 AM
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Originally Posted by Vintage Chief
Call O Reilly
i did they also don’t measure amperage.
At least the employees tell me they only measure voltage.
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Old May 18th, 2023, 11:36 AM
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Originally Posted by jefferyc2000@gmail.com
anyone know where to start on replacing the alternator.
Alternator is super super easy to replace. Two bolts hold it. One is a "pivot" point. The other is the adjustment bolt. One plug. One wire attached with a nut. DIS-CONNECT battery first.
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Old May 18th, 2023, 11:58 AM
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Originally Posted by no1oldsfan
Alternator is super super easy to replace. Two bolts hold it. One is a "pivot" point. The other is the adjustment bolt. One plug. One wire attached with a nut. DIS-CONNECT battery first.

bench tested new alternator and got this results from AutoZone. Brand new out of box refurbished.

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Old May 18th, 2023, 12:11 PM
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On a 1970 does the charge wire connect to the starter batt. post like on a 72 and run to the horn relay? Maybe the wire isn't connected after the starter cable repair.
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Old May 18th, 2023, 12:12 PM
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You may be surprised that a new out of the box alternator failed, but I am not. AutoZone is one of the worst for low quality rebuilt alternators and starters. Been that way ever since I first heard of them in the 80s.
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Old May 18th, 2023, 12:13 PM
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Originally Posted by gs72
On a 1970 does the charge wire connect to the starter batt. post like on a 72 and run to the horn relay? Maybe the wire isn't connected after the starter cable repair.
pos terminal has tiny wire lead to the ignition relay I believe. I may be wrong however.
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