LS3 start troubleshooting
#1
LS3 start troubleshooting
Hey fellas,
Ran out of time tonight to troubleshoot, but wanting to get suggestions,
I turn the key and everything lights up, fuel pump kicks on, but the engine won't turn over? I'M thinking that it's either a bad starter connection, or my ECM power wire is not getting the power. VATS???
Anyone, anyone?
Ran out of time tonight to troubleshoot, but wanting to get suggestions,
I turn the key and everything lights up, fuel pump kicks on, but the engine won't turn over? I'M thinking that it's either a bad starter connection, or my ECM power wire is not getting the power. VATS???
Anyone, anyone?
#2
Re: LS3 start troubleshooting
I dont know how you have things setup, but if you have a modern instrument cluster, the CEL will come on if you have power to the ECU.
VATS could very well be killing you. It sure did with mine when I went standalone.
VATS could very well be killing you. It sure did with mine when I went standalone.
#3
Senior Member
iTrader: (4)
Joined: May 2006
Posts: 704
Likes: 2
From: Beloeil, Quebec
Car: IROC-Z
Engine: LSx
Transmission: T56
Axle/Gears: Fabbed 9"
Re: LS3 start troubleshooting
Doesnt look like a VATS problem to me. If it was, the engine would still start and shut off after 1-2 seconds. If the engine doesnt even turn over, it is definately your starter connections. Make sure you get +12V to your starter when your key is on the IGN position.
#4
Member
Joined: Mar 2005
Posts: 368
Likes: 0
From: London, Ontario
Car: 1991 Camaro RS
Engine: LS1
Transmission: T56
Axle/Gears: Tru-Track posi/Moser axles/4.10
Re: LS3 start troubleshooting
Hey fellas,
Ran out of time tonight to troubleshoot, but wanting to get suggestions,
I turn the key and everything lights up, fuel pump kicks on, but the engine won't turn over? I'M thinking that it's either a bad starter connection, or my ECM power wire is not getting the power. VATS???
Anyone, anyone?
Ran out of time tonight to troubleshoot, but wanting to get suggestions,
I turn the key and everything lights up, fuel pump kicks on, but the engine won't turn over? I'M thinking that it's either a bad starter connection, or my ECM power wire is not getting the power. VATS???
Anyone, anyone?
Mine sometimes doesnt start becuase it doesnt think the clutch is depressed
#5
Re: LS3 start troubleshooting
3rd gen VATS or LS3 VATS? 3rd gen interrupts the starter signal.
#7
Re: LS3 start troubleshooting
GOT IT RUNNING!!! Was definitely the nuetral switch,
Now just need to lean it up. Seems to be running rich. I'm thinking it's cause it's got open headers right now, and the O2 sensors are probably not reading very accurately.
Now just need to lean it up. Seems to be running rich. I'm thinking it's cause it's got open headers right now, and the O2 sensors are probably not reading very accurately.
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#9
Re: LS3 start troubleshooting
The car is scheduled to get the exhaust done next thursday.
dual 3" X-Pipe, and bullet style mufflers, dumped before rear axle.
Hope this helps out, if not..... i guess a new tune is in store!!!
dual 3" X-Pipe, and bullet style mufflers, dumped before rear axle.
Hope this helps out, if not..... i guess a new tune is in store!!!
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