Engine Grounds
Burning Brakes
Joined: Jan 2008
Posts: 911
Likes: 1
From: mobile alabama
wow
just did a rebuild and had the drive line out.
low oil level with no code on the reader .no fuel at rail but pump primes(whines).i just bought the 04 service man..looks like this ground issue will fix me.
thanks,
mike
low oil level with no code on the reader .no fuel at rail but pump primes(whines).i just bought the 04 service man..looks like this ground issue will fix me.
thanks,
mike
Team Owner
Joined: May 2001
Posts: 36,836
Likes: 243
From: Dear Karma, I have a list of people you missed.
St. Jude Donor '08-'09-'10-'11-'12-'13-'14-'15-'16
Bump for a very worthwhile post from Luck. 
Grounds (or lack of) can be a real source of headaches for us guys with our plastic cars.
I think too many people take them for granted until they have a problem and then wind up chasing a problem that many times is intermittent in nature. The worst kind.
Despite not having any current electrical issues (other than an apparent flaky ignition switch that will get replaced later this week), I have chosen to take the precautionary step of adding a couple extra grounds. One from the case of the alternator to ground stud at G101 and the other from the R/H cylinder head to ground stud G102. These are very easy to add and only need approx 14" of wire with a ring terminal on each end, 5/16" on one end and 3/8" on the other. An "Ounce of prevention" kind of thing.
Grounds (or lack of) can be a real source of headaches for us guys with our plastic cars.
I think too many people take them for granted until they have a problem and then wind up chasing a problem that many times is intermittent in nature. The worst kind. Despite not having any current electrical issues (other than an apparent flaky ignition switch that will get replaced later this week), I have chosen to take the precautionary step of adding a couple extra grounds. One from the case of the alternator to ground stud at G101 and the other from the R/H cylinder head to ground stud G102. These are very easy to add and only need approx 14" of wire with a ring terminal on each end, 5/16" on one end and 3/8" on the other. An "Ounce of prevention" kind of thing.
Veteran
Joined: Jan 2000
Posts: 2,082
Likes: 1
From: Louisville KY
Bump for a very worthwhile post from Luck.
Grounds (or lack of) can be a real source of headaches for us guys with our plastic cars. I think too many people take them for granted until they have a problem and then wind up chasing a problem that many times is intermittent in nature. The worst kind.
Despite not having any current electrical issues (other than an apparent flaky ignition switch that will get replaced later this week), I have chosen to take the precautionary step of adding a couple extra grounds. One from the case of the alternator to ground stud at G101 and the other from the R/H cylinder head to ground stud G102. These are very easy to add and only need approx 14" of wire with a ring terminal on each end, 5/16" on one end and 3/8" on the other. An "Ounce of prevention" kind of thing.
Grounds (or lack of) can be a real source of headaches for us guys with our plastic cars.
I think too many people take them for granted until they have a problem and then wind up chasing a problem that many times is intermittent in nature. The worst kind. Despite not having any current electrical issues (other than an apparent flaky ignition switch that will get replaced later this week), I have chosen to take the precautionary step of adding a couple extra grounds. One from the case of the alternator to ground stud at G101 and the other from the R/H cylinder head to ground stud G102. These are very easy to add and only need approx 14" of wire with a ring terminal on each end, 5/16" on one end and 3/8" on the other. An "Ounce of prevention" kind of thing.
That's what fixed my column lock problem. I ran a ground wire from G202 to the negative side of the battery cable.
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Tech Contributor
Joined: Dec 1999
Posts: 32,910
Likes: 2,402
From: Anthony TX
CI 6,7,8,9,11 Vet
St. Jude Donor '08
Hell YES!! You would be amazed at the number of people that either leave G-106 OFF or Connect it to the SOLENOID +12 Terminal. We are continuously providing assistance with ground issues and the ones Lucky has highlighted are frequently high on the list!The Engine grounds are LOW, out of sight and difficult to get to
People often have no idea that there there or even important.
OUTSTANDING Job Lucky!!!!!!
Bill
Tech Contributor
Joined: Dec 1999
Posts: 32,910
Likes: 2,402
From: Anthony TX
CI 6,7,8,9,11 Vet
St. Jude Donor '08
Nver2loud
This post was posted earlier today!!!
http://forums.corvetteforum.com/c5-t...post1579202653
See.... It happens ALL THE TIME!
Bill
Tech Contributor
Joined: Dec 1999
Posts: 32,910
Likes: 2,402
From: Anthony TX
CI 6,7,8,9,11 Vet
St. Jude Donor '08
Race Director
Joined: Dec 2004
Posts: 13,760
Likes: 75
From: Haymarket VA
I've already gone through the ground blocks on the front of the frame by the hood hinges. When I went to put the battery back in I noticed the brass adapter bolt I have so I can hook up the amps is stripped and wouldn't tighten up. I didn't notice it loose when I took it out but it's highly possible it was. I'll get it back together tomorrow and see what happens. If that doesn't do it....it's into the driver's door accordian.
Thanks to both Bill and Lucky!
Thanks to both Bill and Lucky!
Tech Contributor
Joined: Dec 1999
Posts: 32,910
Likes: 2,402
From: Anthony TX
CI 6,7,8,9,11 Vet
St. Jude Donor '08
The most common ground mistakes are G105 G106 and G107. There easy to forget about. Quite frequently people often put the wire for ground G106 on the STARTER SOLENOID!!!
You will be amazed the FUN that causes!
You will be amazed the FUN that causes!
Tech Contributor
Joined: May 2008
Posts: 3,100
Likes: 17
From: Somers, CT and Clermont, FL
St. Jude Donor '09-'10-'11-'12-'13-'14-'15-'16
Excellent info. and wiring diagrams lucky!
Bill Curlee has also been preaching the importance of good electrical grounds for many years.
Ground connections can be so easily overlooked when you're anxious to get that new engine bolted in and fired up.
Bill Curlee has also been preaching the importance of good electrical grounds for many years.
Ground connections can be so easily overlooked when you're anxious to get that new engine bolted in and fired up.
Tech Contributor
Joined: Dec 1999
Posts: 32,910
Likes: 2,402
From: Anthony TX
CI 6,7,8,9,11 Vet
St. Jude Donor '08
Something else to consider or should I say watch out for is, Make sure that you don't attach ground wire G-106 to the starter solenoid by mistake. It has an eyelet on the wire that fits on the starter lug just fine.
Mike and I have seen this issue too many times not to warn people in advance of the mistake.
Yep, All the engine grounds are very important and frequently overlooked or discarded as insignificant wires.
Far from the truth!
BC
Mike and I have seen this issue too many times not to warn people in advance of the mistake.
Yep, All the engine grounds are very important and frequently overlooked or discarded as insignificant wires.
Far from the truth!
BC
