2001 C5 - weird issue
Thread Starter
8th Gear
Joined: Oct 2024
Posts: 8
Likes: 1
2001 C5 - weird issue
Hello all,
I have a 2001 C5 Corvette that started having some issues recently. I just swapped a new 6.0 into it (had a 6.0 swap before but started knocking - was running and functioning fine otherwise). It started up great and ran fine for the first 2 heat cycles. Part way through the third, after running for about 7-8 minutes the car just abruptly died. I tried starting it back up and would get a crank no start. Sometimes it would fire up for a second and then immediately shut off again. I haven’t had the luxury to check out the fuel pressure yet, although I will get to it tomorrow. I’m wondering if anyone has experienced this issue, and if so, what the solution was. Or what steps I could take to narrow down the problem. I also know that the ground coming off the Oil Temp Sensor isn’t on right now (couldn’t reach in there and got lazy), but I can’t imagine that would be the problem because it started and ran fine for 2 heat cycles prior to the problem. Input would be appreciated!
I have a 2001 C5 Corvette that started having some issues recently. I just swapped a new 6.0 into it (had a 6.0 swap before but started knocking - was running and functioning fine otherwise). It started up great and ran fine for the first 2 heat cycles. Part way through the third, after running for about 7-8 minutes the car just abruptly died. I tried starting it back up and would get a crank no start. Sometimes it would fire up for a second and then immediately shut off again. I haven’t had the luxury to check out the fuel pressure yet, although I will get to it tomorrow. I’m wondering if anyone has experienced this issue, and if so, what the solution was. Or what steps I could take to narrow down the problem. I also know that the ground coming off the Oil Temp Sensor isn’t on right now (couldn’t reach in there and got lazy), but I can’t imagine that would be the problem because it started and ran fine for 2 heat cycles prior to the problem. Input would be appreciated!
Tech Contributor
Joined: Jan 2007
Posts: 19,362
Likes: 1,128
From: Dyer, IN
Hello all,
I have a 2001 C5 Corvette that started having some issues recently. I just swapped a new 6.0 into it (had a 6.0 swap before but started knocking - was running and functioning fine otherwise). It started up great and ran fine for the first 2 heat cycles. Part way through the third, after running for about 7-8 minutes the car just abruptly died. I tried starting it back up and would get a crank no start. Sometimes it would fire up for a second and then immediately shut off again. I haven’t had the luxury to check out the fuel pressure yet, although I will get to it tomorrow. I’m wondering if anyone has experienced this issue, and if so, what the solution was. Or what steps I could take to narrow down the problem. I also know that the ground coming off the Oil Temp Sensor isn’t on right now (couldn’t reach in there and got lazy), but I can’t imagine that would be the problem because it started and ran fine for 2 heat cycles prior to the problem. Input would be appreciated!
I have a 2001 C5 Corvette that started having some issues recently. I just swapped a new 6.0 into it (had a 6.0 swap before but started knocking - was running and functioning fine otherwise). It started up great and ran fine for the first 2 heat cycles. Part way through the third, after running for about 7-8 minutes the car just abruptly died. I tried starting it back up and would get a crank no start. Sometimes it would fire up for a second and then immediately shut off again. I haven’t had the luxury to check out the fuel pressure yet, although I will get to it tomorrow. I’m wondering if anyone has experienced this issue, and if so, what the solution was. Or what steps I could take to narrow down the problem. I also know that the ground coming off the Oil Temp Sensor isn’t on right now (couldn’t reach in there and got lazy), but I can’t imagine that would be the problem because it started and ran fine for 2 heat cycles prior to the problem. Input would be appreciated!
There is no ONE solution to your problem
There is no external ground for the oil temperature sensor
If you left the ground loose behind the drivers side head, that is very likely your issue
Thread Starter
8th Gear
Joined: Oct 2024
Posts: 8
Likes: 1
It’s the ground that’s supposed to go down by the motor mount on drivers side. I didn’t post any codes because unfortunately I don’t have any
Tech Contributor
Joined: Jan 2007
Posts: 19,362
Likes: 1,128
From: Dyer, IN
.
Last edited by lucky131969; Oct 2, 2024 at 06:38 PM.
Thread Starter
8th Gear
Joined: Oct 2024
Posts: 8
Likes: 1
Hello all,
I have a 2001 C5 Corvette that started having some issues recently. I just swapped a new 6.0 into it (had a 6.0 swap before but started knocking - was running and functioning fine otherwise). It started up great and ran fine for the first 2 heat cycles. Part way through the third, after running for about 7-8 minutes the car just abruptly died. I tried starting it back up and would get a crank no start. Sometimes it would fire up for a second and then immediately shut off again. I haven’t had the luxury to check out the fuel pressure yet, although I will get to it tomorrow. I’m wondering if anyone has experienced this issue, and if so, what the solution was. Or what steps I could take to narrow down the problem. I also know that the ground coming off the Oil Temp Sensor isn’t on right now (couldn’t reach in there and got lazy), but I can’t imagine that would be the problem because it started and ran fine for 2 heat cycles prior to the problem. Input would be appreciated!
I have a 2001 C5 Corvette that started having some issues recently. I just swapped a new 6.0 into it (had a 6.0 swap before but started knocking - was running and functioning fine otherwise). It started up great and ran fine for the first 2 heat cycles. Part way through the third, after running for about 7-8 minutes the car just abruptly died. I tried starting it back up and would get a crank no start. Sometimes it would fire up for a second and then immediately shut off again. I haven’t had the luxury to check out the fuel pressure yet, although I will get to it tomorrow. I’m wondering if anyone has experienced this issue, and if so, what the solution was. Or what steps I could take to narrow down the problem. I also know that the ground coming off the Oil Temp Sensor isn’t on right now (couldn’t reach in there and got lazy), but I can’t imagine that would be the problem because it started and ran fine for 2 heat cycles prior to the problem. Input would be appreciated!
Tech Contributor
Joined: Jan 2007
Posts: 19,362
Likes: 1,128
From: Dyer, IN
No, it's not.
Ya know what? ......go ahead and leave the G105 disconnected, and then troubleshoot the issue systematically and see what you come up with.
There is a wealth of knowledge on this forum that far exceeds my expertise.
Good luck.
There is a wealth of knowledge on this forum that far exceeds my expertise.
Good luck.
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Thread Starter
8th Gear
Joined: Oct 2024
Posts: 8
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Moderator, Tech Contributor
Joined: Sep 2013
Posts: 15,435
Likes: 3,982
From: Cape Coral, Florida
Unfortunately we won’t be able to diagnose this without gathering some evidence…a “start and stall” can be a serial data bus issue among some others…do you have a scan tool ??…if the scan tool can’t communicate with the car a serial data bus issue is suspect…yes, you can look at fuel pressure and maybe look at your MAP sensor…we had a member a while back with a MAP sensor issue that caused a no start…without a scan tool you are not going to be able to diagnose this…there are some sensors that operate differently between an LS2 and LS1 that will have to be looked at…an oil temp sensor wouldn’t cause the engine to shut down.
Thread Starter
8th Gear
Joined: Oct 2024
Posts: 8
Likes: 1
Unfortunately we won’t be able to diagnose this without gathering some evidence…a “start and stall” can be a serial data bus issue among some others…do you have a scan tool ??…yes, you can look at fuel pressure and maybe look at your MAP sensor…we had a member a while back with a MAP sensor issue that caused a no start…without a scan tool you are not going to be able to diagnose this…there are some sensors that operate differently between an LS2 and LS1 that will have to be looked at.
Moderator, Tech Contributor
Joined: Sep 2013
Posts: 15,435
Likes: 3,982
From: Cape Coral, Florida
Well if you can communicate we can take the data bus off the table…I’m not sure about the LQ4 but the LS1 uses a 24X crank reluctor and the cam is a 1X….you would to check what that engine uses for the cam and crank…the LS1 cam and crank sensor uses a 12 volt feed so again I don’t know about the LQ4…a MAP sensor key ON engine OFF should read 101 kPa (14.7 psi /29.8 inches of Mercury) at sea level.
Thread Starter
8th Gear
Joined: Oct 2024
Posts: 8
Likes: 1
Well if you can communicate we can take the data bus off the table…I’m not sure about the LQ4 but the LS1 uses a 24X crank reluctor and the cam is a 1X….you would to check what that engine uses for the cam and crank…the LS1 cam and crank sensor uses a 12 volt feed so again I don’t know about the LQ4…a MAP sensor key ON engine OFF should read 101 kPa (14.7 psi /29.8 inches of Mercury) at sea level.
Moderator, Tech Contributor
Joined: Sep 2013
Posts: 15,435
Likes: 3,982
From: Cape Coral, Florida
I’m not familiar with the LQ4…a bad crank sensor would only crank and if you look at the Tach it would not move if it’s that sensor.