2010 won't start
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Intermediate
Joined: Jan 2015
Posts: 26
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2010 won't start
I have a 2010 LS3 and today it went into reduced engine power and shut off. It won't turn over unless I disconnect the battery. But when it turns over it revs all the way up then dies and won't start unless I disconnect the battery. Anyone have any ideas to what this is? Earlier that day my CEL came on for the MAF and another one for running to rich or lean.
Pro
Joined: Jun 2005
Posts: 693
Likes: 2
From: Los Angeles CA
OP, were you able to find any solution to this problem?
My 2005 is doing exactly this now after I put it away 2 months ago after my last autocross with it.
Car starts, rpm needle cycles once, then shuts off. Never gets to reach idle...
Reduced engine power & CEL, but my code reader doesn't retrieve anything.
Spent 2 days doing all that I've read about and still can't figure out why.
- no wet passenger footwell/electronics
- went ahead and cleaned MAF & checked connector wires.
tried unplugging MAF.
- cleaned Throttle Body & checked connector wires. (doesn't seem to be TB since I can actually rev the engine during the 2 seconds upon starting before it shuts off)
- no corrosion on the 2 ground wires to frame in engine compartment.
- went ahead and filed clean battery connector.
- pulled and checked every fuse in engine compartment.
- filled up with gas before putting it away 2 months ago.
Only other thing I suspected is the battery after 2 months of sitting, but it was strong enough to start the car up couple times.
And trying to start with jumper cables charging for 10 mins gave it the same results.
I took it to 2 different Auto Zones anyway and both stores said it's fine load tested, just needs charge (after starting so many times).
It still starts the car, so battery seems to be sufficient.
I am having the battery full charged this week for my next round of troubleshooting on the weekend.
Would a failed alternator cause this by not providing juice to keep car running? Or would the car stay running at least until it drains out the battery?
I guess I need to check all the fuses in the passenger footwell side and try unplugging replugging all the connections down there...
Was there a simple solution to this?
My 2005 is doing exactly this now after I put it away 2 months ago after my last autocross with it.
Car starts, rpm needle cycles once, then shuts off. Never gets to reach idle...
Reduced engine power & CEL, but my code reader doesn't retrieve anything.
Spent 2 days doing all that I've read about and still can't figure out why.
- no wet passenger footwell/electronics
- went ahead and cleaned MAF & checked connector wires.
tried unplugging MAF.
- cleaned Throttle Body & checked connector wires. (doesn't seem to be TB since I can actually rev the engine during the 2 seconds upon starting before it shuts off)
- no corrosion on the 2 ground wires to frame in engine compartment.
- went ahead and filed clean battery connector.
- pulled and checked every fuse in engine compartment.
- filled up with gas before putting it away 2 months ago.
Only other thing I suspected is the battery after 2 months of sitting, but it was strong enough to start the car up couple times.
And trying to start with jumper cables charging for 10 mins gave it the same results.
I took it to 2 different Auto Zones anyway and both stores said it's fine load tested, just needs charge (after starting so many times).
It still starts the car, so battery seems to be sufficient.
I am having the battery full charged this week for my next round of troubleshooting on the weekend.
Would a failed alternator cause this by not providing juice to keep car running? Or would the car stay running at least until it drains out the battery?
I guess I need to check all the fuses in the passenger footwell side and try unplugging replugging all the connections down there...
Was there a simple solution to this?
