C6 won't turn over. PLEASE HELP!!!
Thread Starter
Heel & Toe
Joined: Aug 2017
Posts: 15
Likes: 0
C6 won't turn over. PLEASE HELP!!!
I have a 2007 corvette. It is not cranking. The battery is only 6 months old. I still had it tested to to make sure that wasn't the issue. Battery tested good. I then thought it was the started, it was good but replaced it anyways. I check all fuses and relays. All fuses are good, relays were good to but replaced the powertrain control relay, starter relay, crank relay, fuel relay. It was running fine no issues what so every. Parked it in the garage and about a week later I went to clean her up. Wiped her down, then went to clean engine bay. Removed hood for a deep detail clean. Then proceeded to remove intake(fast102), removed valve covers and polished them up. Put everything back together and now won't start.
Melting Slicks
Joined: Mar 2016
Posts: 2,211
Likes: 237
From: Indianapolis IN
It sounds like a connection issue to me. Inspect all the wiring at the starter, battery, and grounds. This may even require you to remove and clean the terminals. You can hear the starter solenoid hit and then nothing as if voltage just fell off and then again. That or the solenoid has applied voltage but the starter motor is either faulty or has a poor connection. You really need to get a meter out and confirm some voltages at the starter during these events.
Thinking out loud:
What type of load testing equipment was used to test the battery? I digital unit could easily miss a failed internal plate. Make sure your tester is actively applying a load or swap the battery with a known good battery and see if that solves your problem. I have seen even a brand new battery pass a digital test but fail when actual load is applied.
Your video post was made incorrectly. This should work.
Thinking out loud:
What type of load testing equipment was used to test the battery? I digital unit could easily miss a failed internal plate. Make sure your tester is actively applying a load or swap the battery with a known good battery and see if that solves your problem. I have seen even a brand new battery pass a digital test but fail when actual load is applied.
Your video post was made incorrectly. This should work.
Last edited by User Omega; Aug 31, 2017 at 03:38 AM.
Thread Starter
Heel & Toe
Joined: Aug 2017
Posts: 15
Likes: 0
Thank you for your response. I used a digital multimeter. I had the battery tested at orielly, and prior to that I used my voltage meter while I tried to start it. It showed 2.7 volts. I'm new to the electrical side so I'm not to sure what that number is. I know it should be at least 12.4 to get a strong start. The positive and ground from the battery get really hot when trying to crank. I keep hear I have a bad ground but I checked all the grounds that I have researched. I cleaned both grounds coming from the battery, the one to the engine block and the one to the frame.
Melting Slicks
Joined: Dec 2013
Posts: 2,232
Likes: 315
From: Bridgewater New Jersey
Is that big clunking noise coming from your car? If so, no wonder your cables are getting hot. Sounds like the starter bendix drive is indexing into the flywheel teeth, but it's not turning the engine over.
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Melting Slicks
Joined: Dec 2013
Posts: 2,232
Likes: 315
From: Bridgewater New Jersey
You could of gotten a bad starter or your engine is locked up, if your sure that the battery is OK. If you feel the engine is locked up, may want to investigate that by pulling the spark plugs and turning the engine over by hand. Grab a glove and pull on the serpentine belt, as that should be all that is needed to turn it over.
You can have the store check the starter also, as it could be shorted creating all the heat in the battery cables.
You can have the store check the starter also, as it could be shorted creating all the heat in the battery cables.
Melting Slicks
Joined: Nov 2013
Posts: 2,580
Likes: 68
From: Memphis Tn
Thread Starter
Heel & Toe
Joined: Aug 2017
Posts: 15
Likes: 0
Yes the original starter made the same noise. So I swapped the battery out with one in my company truck (750 CCA) and it started but immediately died. Progress is being made atleast. The voltage read 2.7 on the voltage meter
Last edited by Ziggy.C; Sep 1, 2017 at 08:40 PM.
Thread Starter
Heel & Toe
Joined: Aug 2017
Posts: 15
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Not sure to be honest with you, they new battery did start the car, but it died after about 2 seconds of being started. It's going to the shop on Thursday. I'm out of time and patients with it, and idk what else to check on it.
Melting Slicks
Joined: Mar 2016
Posts: 2,211
Likes: 237
From: Indianapolis IN
Sorry to hear that this happened.
It is awfully difficult to lose a piston sitting in the garage. Do you think it sat, once you cranked it over the first time it dropped a valve and shattered the piston?
Make sure you update this thread with what you find out.
Thread Starter
Heel & Toe
Joined: Aug 2017
Posts: 15
Likes: 0
Yea I'm totally confused. Not sure how the piston got damaged sitting in the garage. It's blowing my mind. And I'm not sure, haven't pulled the heads yet but from what I can see, the valve didn't drop. I'll be sure to update on what I find.