When you click on links to various merchants on this site and make a purchase, this can result in this site earning a commission. Affiliate programs and affiliations include, but are not limited to, the eBay Partner Network.
First post here but long time reader, I have a c6 corvette base that is having some issues. Recently it failed to start the car although it turns over and sometime starts but soon dies. The strange thing is the times it does start it runs fine it seems to have no pattern to when it has the episodes, but when it does it usually takes about 10 min for the car to start. I looked for answers but couldn’t seem to find any if anyone has any suggestions I would be greatly appreciative.
Also: The car had a check engine light for EVAP vent, but I fixed that and the car is displaying no error codes?
Last edited by SilverC6MN6; Jun 3, 2018 at 10:12 PM.
Reason: More info
Not sure if I'm any help but the only time mine wouldn't start it wouldn't turn over. Turned out the computer wanted a reboot.
Is it trying to turn over the every time just not catching? It's not throwing any codes at all? That seems weird to me but I'm new to these things too.
Not sure if I'm any help but the only time mine wouldn't start it wouldn't turn over. Turned out the computer wanted a reboot.
Is it trying to turn over the every time just not catching? It's not throwing any codes at all? That seems weird to me but I'm new to these things too.
Thanks for replying, I have gotten the codes checked twice once while it wouldn't start no codes he even reset them and it made no difference. With it starting sometimes it will seem to start and began to choke and spit like it isn't getting fuel and then other times it will just turn over and never start.
Thanks for replying, I have gotten the codes checked twice once while it wouldn't start no codes he even reset them and it made no difference. With it starting sometimes it will seem to start and began to choke and spit like it isn't getting fuel and then other times it will just turn over and never start.
You did not mention battery condition. Even though it seems unlikely, it could still be bad. If you have a weak battery and a weak alternator, you could get some of the other conditions you mention.
Last edited by buckmeister2; Jun 3, 2018 at 11:40 PM.
Any number of things w/could cause this, no codes makes it a whole lot trickier. IF it's repeatable a good LS tech c/would trace issue, problem is finding a competent tech...of anything.
Who's doing your wrenching now?
Starting point might be having battery load tested, ruled out first.
If good have alternator tested, next.
Get under hood for a slow, close look around, use a flashlight.
Look for any loose coil pack wire(s), insure spark plugs securely booted. Check MAF lines. Might get lucky & catch something obvious.
Betting most if not all trigger a CEL, but never know w/ C6.
As C6 ages we're seeing never before seen crap, 'mysterious' symptoms often enough w/ no codes, also.
Plausible a valve spring broke, very similar symptoms w/ another member <year ago. Was a broken valve spring, car ran like crap, wouldn't idle.
Pop valve covers, inspect for breakage.
Trento, GA sounds rural. SOS here, HP shops w/ quality techs w/in 50-100 miles nonexistent.
I'd be over my head w/ this if all above checked-out, best left to a pro --if one can be located. The search for one promises to be as interesting as the problem.
Any number of things w/could cause this, no codes makes it a whole lot trickier. IF it's repeatable a good LS tech c/would trace issue, problem is finding a competent tech...of anything.
Who's doing your wrenching now?
Starting point might be having battery load tested, ruled out first.
If good have alternator tested, next.
Get under hood for a slow, close look around, use a flashlight.
Look for any loose coil pack wire(s), insure spark plugs securely booted. Check MAF lines. Might get lucky & catch something obvious.
Betting most if not all trigger a CEL, but never know w/ C6.
As C6 ages we're seeing never before seen crap, 'mysterious' symptoms often enough w/ no codes, also.
Plausible a valve spring broke, very similar symptoms w/ another member <year ago. Was a broken valve spring, car ran like crap, wouldn't idle.
Pop valve covers, inspect for breakage.
Trento, GA sounds rural. SOS here, HP shops w/ quality techs w/in 50-100 miles nonexistent.
I'd be over my head w/ this if all above checked-out, best left to a pro --if one can be located. The search for one promises to be as interesting as the problem.
G/L, update w/ any new info.
I'll run through some of the things you mentioned tonight, but luckily I found a man that used to work at the Chevrolet dealership in Chattanooga TN. I personally changed the EVAP check valve, but I just got the car a couple months ago and it recently started doing this, but the guy was the "corvette man" there in Chattanooga so we will see what he can come up with. Also I had a C5 prior to this car and traded up to get the C6 and it is a very high mileage car All I could afford I'm 19. Just a tick over 136k on the odometer runs perfect besides this.
I'll run through some of the things you mentioned tonight, but luckily I found a man that used to work at the Chevrolet dealership in Chattanooga TN.
Perfect.
Lead a Blessed life.
When checking your location noticed Chatt was closest metro area.
I personally changed the EVAP check valve, but I just got the car a couple months ago and it recently started doing this, but the guy was the "corvette man" there in Chattanooga so we will see what he can come up with.
Make sure he checks valve springs.
A solid Chevy tech might know this but do suggest it.
Also I had a C5 prior to this car and traded up to get the C6 and it is a very high mileage car All I could afford I'm 19. Just a tick over 136k on the odometer runs perfect besides this.
Congrats, my first Corvette at 18, when Jesus was a Private. '69 roadster. Fun-fun-fun. Fast.
In the end it broke me, too.
More than a few over the years learned this, especially w/ C6.
Important the right guy figures this out w/o throwing parts at it.
136K...check valve springs, if only to rule 'em out.
Hardly a pricey repair, new springs, but left unchecked a potential disaster looms.
FWIW, wouldn't drive it 'til this gets sorted.
My C6 started doing the same kind of thing. I took apart the fuse block in the engine bay and found the connector for one of the fuel relay pins on the gray harness was way too open.
I was able to bent it back and now it starts like normal.
a
My C6 started doing the same kind of thing. I took apart the fuse block in the engine bay and found the connector for one of the fuel relay pins on the gray harness was way too open.
I was able to bent it back and now it starts like normal.
a
Any tips on removing the top cover of the fuse box I cant seem to get the 4 bolts out
Took the car to the shop and he checked power to fuel relay said I had 12 volts, but when the car failed to start it was only pumping 10 psi (needs 60) of fuel. He said I need a new fuel pump and informed me he diddn't have the tools to do it and recommended I take it to the dealership, but I couldn't get the car to start to leave the shop so I opened the fuse box and pulled the fuse for fuel relay and reinserted it and like nothing the car starts back up. So it turned out to be what mktx01 suggested. It was not making good connection so not enough power was going to the fuel pump so we fixed that and all is well!
Took the car to the shop and he checked power to fuel relay said I had 12 volts, but when the car failed to start it was only pumping 10 psi (needs 60) of fuel. He said I need a new fuel pump and informed me he diddn't have the tools to do it and recommended I take it to the dealership, but I couldn't get the car to start to leave the shop so I opened the fuse box and pulled the fuse for fuel relay and reinserted it and like nothing the car starts back up. So it turned out to be what mktx01 suggested. It was not making good connection so not enough power was going to the fuel pump so we fixed that and all is well!
You should probably be aware that the new relay may only e a temporary fix. I chased the problem for quite a while when I eventually replaced the fuse block due to the damage done by improper BAP install ages ago. You don’t have a BAP but the constant over heating can severely damage the block.
Took the car to the shop and he checked power to fuel relay said I had 12 volts, but when the car failed to start it was only pumping 10 psi (needs 60) of fuel. He said I need a new fuel pump and informed me he diddn't have the tools to do it and recommended I take it to the dealership, but I couldn't get the car to start to leave the shop so I opened the fuse box and pulled the fuse for fuel relay and reinserted it and like nothing the car starts back up. So it turned out to be what mktx01 suggested. It was not making good connection so not enough power was going to the fuel pump so we fixed that and all is well!
so I opened the fuse box and pulled the fuse for fuel relay and reinserted it and like nothing the car starts back up. So it turned out to be what mktx01 suggested. It was not making good connection so not enough power was going to the fuel pump so we fixed that and all is well!
Man, that is like taking your jeans out of the dryer, and finding $1000 in the pocket. Great for you.
Replacing the fuse helped me some but it would randomly not start different places. After taking the block apart and fixing that pin, it's been working. I did an a touch of solder to the fuse side pin to help make connection to the harness connector.
Replacing the fuse helped me some but it would randomly not start different places. After taking the block apart and fixing that pin, it's been working. I did an a touch of solder to the fuse side pin to help make connection to the harness connector.
Real value of this place is due to people like you, mk.
W/could cost a LOT of $, cause a LOT of stress trying to trace this issue after throwing parts at it when real issue & fix is simple as this.
C6 corvette starting problems
but I'm new to these things too.
