The 1947 - Present Chevrolet & GMC Truck Message Board Network







Register or Log In To remove these advertisements.

Go Back   The 1947 - Present Chevrolet & GMC Truck Message Board Network > 47 - Current classic GM Trucks > The 1973 - 1987 Chevrolet & GMC Squarebody Pickups Message Board > Squarebody Projects and Builds

Web 67-72chevytrucks.com


Reply
 
Thread Tools Display Modes
Old 01-01-2016, 11:02 AM   #726
swampbog
Registered User
 
swampbog's Avatar
 
Join Date: Dec 2015
Location: Detroit
Posts: 114
Re: 1976 Square "Simple Green"

Quote:
Originally Posted by ray1970 View Post
Ray here.
When I was having the battery problem was the only time my screen went BLANK.....every time I tried to start it..
Low voltage.....
has never happened again.

Ray.
Ray,
Blank as in black or white?
swampbog is offline   Reply With Quote
Old 01-01-2016, 11:05 AM   #727
RodsGreen10
Registered User
 
RodsGreen10's Avatar
 
Join Date: Jun 2015
Location: Richmond,KY and Knoxville,TN
Posts: 1,584
Re: 1976 Square "Simple Green"

Quote:
Originally Posted by swampbog View Post
They don't have this grounding thorough the throttle body itself do they?
I imagine you have a none conductive gasket between the body and the intake, so the only ground it gets is through the "carb to intake" bolts. Which is basically electrically hampered by the powder coating they have on the throttle body.?.
Yep that's how it grounds. Felpro gaskets and a carb space and a throttle bracket also lol. They did tell me to run a ground from the carb stud direct to the battery yesterday. I know the carb studs are grounding verified that when I did the HEI module upgrade. Cause I grounded it to the carb studs.
RodsGreen10 is offline   Reply With Quote
Old 01-01-2016, 11:06 AM   #728
RodsGreen10
Registered User
 
RodsGreen10's Avatar
 
Join Date: Jun 2015
Location: Richmond,KY and Knoxville,TN
Posts: 1,584
Re: 1976 Square "Simple Green"

Quote:
Originally Posted by ray1970 View Post
Ray here.
When I was having the battery problem was the only time my screen went BLANK.....every time I tried to start it..
Low voltage.....
has never happened again.

Ray.
Ok. Well I know the battery is good. And like I said even with a jumper on it.
RodsGreen10 is offline   Reply With Quote
Old 01-01-2016, 11:12 AM   #729
swampbog
Registered User
 
swampbog's Avatar
 
Join Date: Dec 2015
Location: Detroit
Posts: 114
Re: 1976 Square "Simple Green"

Quote:
Originally Posted by RodsGreen10 View Post
Yep that's how it grounds.
Well, that's a ****ty ground.
Maybe (and this is a stretch) when it's cold the only areas that are making good "ground" have shrunk due to the cold and when it gets around 100 degrees it warms up and grows and makes contact (thermal dynamics).
Everything moves when it comes to temperature, granted it may be only .001 but even a .001 can make a difference.
You edited your post as I was typing
The studs do have a good ground but the studs are threaded in to the intake. The throttle body coating could possibly not make electrical contact to the studs or not make a good enough one for the ECU.
Again it is a stretch but it could be an issue.

Last edited by swampbog; 01-01-2016 at 11:18 AM.
swampbog is offline   Reply With Quote
Old 01-01-2016, 11:18 AM   #730
ray1970
Registered User
 
Join Date: Dec 2015
Location: madbury nh
Posts: 93
Re: 1976 Square "Simple Green"

Ray here.

Went gray kind of.....And I hade my best bake your batty charger on it.
and it spun over good..

The way I finally saw it was if my battery was any good I would not need a charger..
for more than a short time....

Ray.
ray1970 is offline   Reply With Quote
Old 01-01-2016, 11:26 AM   #731
swampbog
Registered User
 
swampbog's Avatar
 
Join Date: Dec 2015
Location: Detroit
Posts: 114
Re: 1976 Square "Simple Green"

I looked at some pics of the FiTech body and I do see none coated areas at the base where the studs go, or are they coted but in a clear only?
Is there only one area that is "non coated"? The few pics I saw it looks like only one area is bare.
swampbog is offline   Reply With Quote
Old 01-01-2016, 11:31 AM   #732
RodsGreen10
Registered User
 
RodsGreen10's Avatar
 
Join Date: Jun 2015
Location: Richmond,KY and Knoxville,TN
Posts: 1,584
Re: 1976 Square "Simple Green"

Quote:
Originally Posted by swampbog View Post
I looked at some pics of the FiTech body and I do see none coated areas at the base where the studs go, or are they coted but in a clear only?
Is there only one area that is "non coated"? The few pics I saw it looks like only one area is bare.
Yep how mine is only 1 bare area. It has 2 but how mine bolts in it is only contacting 1 bare spot. I believe that may be why they said run a ground from the carb stud.
RodsGreen10 is offline   Reply With Quote
Old 01-01-2016, 11:32 AM   #733
swampbog
Registered User
 
swampbog's Avatar
 
Join Date: Dec 2015
Location: Detroit
Posts: 114
Re: 1976 Square "Simple Green"

I looked at your video again, (it's one of the videos that popped up on a search) and I think I found a issue.
It's that damn clear air cleaner cover you have. The FiTech unit can see that it's crappy outside and it doesn't want to get out of bed.
https://youtu.be/rfauqfN8m7c?t=18s
swampbog is offline   Reply With Quote
Old 01-01-2016, 11:34 AM   #734
swampbog
Registered User
 
swampbog's Avatar
 
Join Date: Dec 2015
Location: Detroit
Posts: 114
Re: 1976 Square "Simple Green"

Quote:
Originally Posted by RodsGreen10 View Post
Yep how mine is only 1 bare area. I believe that may be why they said run a ground from the carb stud.
Gotta ask.
Is that the one you put the ground to and made sure it electrically contacts the bare area?
swampbog is offline   Reply With Quote
Old 01-01-2016, 11:36 AM   #735
swampbog
Registered User
 
swampbog's Avatar
 
Join Date: Dec 2015
Location: Detroit
Posts: 114
Re: 1976 Square "Simple Green"

Quote:
Originally Posted by RodsGreen10 View Post
Yep how mine is only 1 bare area. I believe that may be why they said run a ground from the carb stud.
Quote:
Originally Posted by RodsGreen10 View Post
Yep how mine is only 1 bare area. It has 2 but how mine bolts in it is only contacting 1 bare spot. I believe that may be why they said run a ground from the carb stud.
You and your damn edits....
swampbog is offline   Reply With Quote
Old 01-01-2016, 11:42 AM   #736
RodsGreen10
Registered User
 
RodsGreen10's Avatar
 
Join Date: Jun 2015
Location: Richmond,KY and Knoxville,TN
Posts: 1,584
Re: 1976 Square "Simple Green"

Quote:
Originally Posted by swampbog View Post
I looked at your video again, (it's one of the videos that popped up on a search) and I think I found a issue.
It's that damn clear air cleaner cover you have. The FiTech unit can see that it's crappy outside and it doesn't want to get out of bed.
https://youtu.be/rfauqfN8m7c?t=18s
Lol.
RodsGreen10 is offline   Reply With Quote
Old 01-01-2016, 11:42 AM   #737
RodsGreen10
Registered User
 
RodsGreen10's Avatar
 
Join Date: Jun 2015
Location: Richmond,KY and Knoxville,TN
Posts: 1,584
Re: 1976 Square "Simple Green"

Quote:
Originally Posted by swampbog View Post
Gotta ask.
Is that the one you put the ground to and made sure it electrically contacts the bare area?
No. I hooked the HEI module to a back carb stud and its is grounded. Also just checked the bare are it is getting ground also.

Last edited by RodsGreen10; 01-01-2016 at 11:51 AM.
RodsGreen10 is offline   Reply With Quote
Old 01-01-2016, 11:51 AM   #738
ray1970
Registered User
 
Join Date: Dec 2015
Location: madbury nh
Posts: 93
Re: 1976 Square "Simple Green"

Ray here.

I'm done beating this horse after this...For it my not be your problem.

Lets go back in time when Yamaha made the XS650 twins late 70s
They would not e-start when cold unless the battery was less than two months old
but would go off first kick.....when warm they fired rite up it drove me crazy and the customers weren't real happy.....The Ing.would not work over the draw of the starter..

I'm glad those days are over...

Well its time to load my snowmobiles and go for a ride.


You do have a kick starter...Well maybe a hand crank....just kidding....

Ray. OUT

Last edited by ray1970; 01-01-2016 at 11:57 AM.
ray1970 is offline   Reply With Quote
Old 01-01-2016, 12:24 PM   #739
swampbog
Registered User
 
swampbog's Avatar
 
Join Date: Dec 2015
Location: Detroit
Posts: 114
Re: 1976 Square "Simple Green"

Quote:
Originally Posted by RodsGreen10 View Post
No. I hooked the HEI module to a back carb stud and its is grounded. Also just checked the bare are it is getting ground also.
Hmm..I wonder if it's not making a proper ground on the inside of the unit.
Or could it still be a fuel issue. But the screen going white (or gray for Ray) kinda makes me think it's electrical somehow.

Some of what I've been reading
http://www.chevelles.com/forums/show...835633&page=10 Post 142 to 169 and it continues on with others stating no issues.

And another who fiddle with the IAC and had 12V issues
http://gmc.mybirdfeeder.net/GMCforum...o=292259&rid=0

http://www.corvetteforum.com/forums/...-review-4.html Post 65 talking about ground issues with cold start

Seems to be something with the 12V and ground.
I still say try the direct wire for hot and ground and on the ground try all the studs just to put that to rest.
We have a few more months of cold to get this figured out. Just what you wanted to hear, isn't it.
swampbog is offline   Reply With Quote
Old 01-01-2016, 12:28 PM   #740
RodsGreen10
Registered User
 
RodsGreen10's Avatar
 
Join Date: Jun 2015
Location: Richmond,KY and Knoxville,TN
Posts: 1,584
Re: 1976 Square "Simple Green"

Quote:
Originally Posted by swampbog View Post
Hmm..I wonder if it's not making a proper ground on the inside of the unit.
Or could it still be a fuel issue. But the screen going white (or gray for Ray) kinda makes me think it's electrical somehow.

Some of what I've been reading
http://www.chevelles.com/forums/show...835633&page=10 Post 142 to 169 and it continues on with others stating no issues.

And another who fiddle with the IAC and had 12V issues
http://gmc.mybirdfeeder.net/GMCforum...o=292259&rid=0

http://www.corvetteforum.com/forums/...-review-4.html Post 65 talking about ground issues with cold start

Seems to be something with the 12V and ground.
I still say try the direct wire for hot and ground and on the ground try all the studs just to put that to rest.
We have a few more months of cold to get this figured out. Just what you wanted to hear, isn't it.
Thanks man I appreciate that. I hate the cold weather. Got some reading ahead of me. Plus funeral which I dread.
RodsGreen10 is offline   Reply With Quote
Old 01-01-2016, 12:35 PM   #741
diceman50
Registered User
 
Join Date: Nov 2013
Location: Midland, Texas
Posts: 203
Re: 1976 Square "Simple Green"

Quote:
Originally Posted by swampbog View Post
I really believe in a dedicated grounds and running the biggest wire I can to the starter and alternator.
I'm with you swampbog. Sometimes I ground my grounds!
__________________
"In an insane world a sane man must appear insane" ~Spock~
diceman50 is offline   Reply With Quote
Old 01-01-2016, 12:41 PM   #742
swampbog
Registered User
 
swampbog's Avatar
 
Join Date: Dec 2015
Location: Detroit
Posts: 114
Re: 1976 Square "Simple Green"

Like I said i get to mess with yours to fix any problems when I finally get mine.
It's just me thinking of myself.

Speaking of myself...

Have you seen Holleys' new Hydra Mat
https://www.youtube.com/watch?v=yfE1v65fNZI
I'm thinking of getting one for me or maybe even going to Tanks Inc fuel pump module http://www.tanksinc.com/index.cfm/pa...prod/prd84.htm
But I kinda like the idea of having the fuel pump externally mounted so if it goes bad on a trail I can easily replace it without dropping the tank.
But the Hydra Mat isn't cheap either and they say 5-10 years before you should replace it depending on the dirtiness of the fuel and how often you drive it. Again dropping the tank to replace it.
But if I cut an access panel in the floor I can do either easily.

Oh and I'm running all PTFE line from tank to the EFI.
swampbog is offline   Reply With Quote
Old 01-01-2016, 12:42 PM   #743
RodsGreen10
Registered User
 
RodsGreen10's Avatar
 
Join Date: Jun 2015
Location: Richmond,KY and Knoxville,TN
Posts: 1,584
Re: 1976 Square "Simple Green"

Quote:
Originally Posted by swampbog View Post
Hmm..I wonder if it's not making a proper ground on the inside of the unit.
Or could it still be a fuel issue. But the screen going white (or gray for Ray) kinda makes me think it's electrical somehow.

Some of what I've been reading
http://www.chevelles.com/forums/show...835633&page=10 Post 142 to 169 and it continues on with others stating no issues.

And another who fiddle with the IAC and had 12V issues
http://gmc.mybirdfeeder.net/GMCforum...o=292259&rid=0

http://www.corvetteforum.com/forums/...-review-4.html Post 65 talking about ground issues with cold start

Seems to be something with the 12V and ground.
I still say try the direct wire for hot and ground and on the ground try all the studs just to put that to rest.
We have a few more months of cold to get this figured out. Just what you wanted to hear, isn't it.
Well looks like a damn ground issue. Ordered up some grounds from Amazon.
RodsGreen10 is offline   Reply With Quote
Old 01-01-2016, 12:43 PM   #744
LostMy65
But Found Her 25yrs Later!
 
LostMy65's Avatar
 
Join Date: Oct 2010
Location: Oregon City, Oregon
Posts: 10,482
Re: 1976 Square "Simple Green"

Quote:
Originally Posted by Crushkrew View Post
... clip......I have heard that other FI systems like to be hooked directly to battery...yes 12v is 12v...but when cranking I would imagine that every AMP to the FI counts....shortest distance and least amount of draw on a wire and all that.....
.
I've been watching installation videos for some of the other guys units, and I noticed that also. Their computer units have a large black wire and a large red wire, and they want them both wired directly to the battery terminals.
__________________
I lost my 65 - Found it 25 years later:
http://67-72chevytrucks.com/vboard/s...d.php?t=426650

66 C20 Service Truck:
http://67-72chevytrucks.com/vboard/s...d.php?t=428035
LostMy65 is offline   Reply With Quote
Old 01-01-2016, 12:46 PM   #745
RodsGreen10
Registered User
 
RodsGreen10's Avatar
 
Join Date: Jun 2015
Location: Richmond,KY and Knoxville,TN
Posts: 1,584
Re: 1976 Square "Simple Green"

Quote:
Originally Posted by swampbog View Post
Like I said i get to mess with yours to fix any problems when I finally get mine.
It's just me thinking of myself.

Speaking of myself...

Have you seen Holleys' new Hydra Mat
https://www.youtube.com/watch?v=yfE1v65fNZI
I'm thinking of getting one for me or maybe even going to Tanks Inc fuel pump module http://www.tanksinc.com/index.cfm/pa...prod/prd84.htm
But I kinda like the idea of having the fuel pump externally mounted so if it goes bad on a trail I can easily replace it without dropping the tank.
But the Hydra Mat isn't cheap either and they say 5-10 years before you should replace it depending on the dirtiness of the fuel and how often you drive it. Again dropping the tank to replace it.
But if I cut an access panel in the floor I can do either easily.

Oh and I'm running all PTFE line from tank to the EFI.
Yep I saw that. Good choice on fuel line!!
RodsGreen10 is offline   Reply With Quote
Old 01-01-2016, 12:48 PM   #746
RodsGreen10
Registered User
 
RodsGreen10's Avatar
 
Join Date: Jun 2015
Location: Richmond,KY and Knoxville,TN
Posts: 1,584
Re: 1976 Square "Simple Green"

Quote:
Originally Posted by LostMy65 View Post
.
I've been watching installation videos for some of the other guys units, and I noticed that also. Their computer units have a large black wire and a large red wire, and they want them both wired directly to the battery terminals.
The FiTech does not have a ground wire it ground thought the studs on the intake. And I will argue until I am blue in the face about how I have it hooked up. Lol. The junction block is tied into the battery.
RodsGreen10 is offline   Reply With Quote
Old 01-01-2016, 12:48 PM   #747
swampbog
Registered User
 
swampbog's Avatar
 
Join Date: Dec 2015
Location: Detroit
Posts: 114
Re: 1976 Square "Simple Green"

Quote:
Originally Posted by diceman50 View Post
I'm with you swampbog. Sometimes I ground my grounds!
I have a Jeep with a fiberglass body so I know all about grounds. Plus the older CJs were known to have ground issues. If you wanted brighter headlamps the easiest thing to do was run a dedicated ground from each light and taa-daa you look like your running your high beams and now your high beams are actually blinding people.
On my Jeep everything has a dedicated ground or it's clustered to a dedicated ground.
I have ground lugs everywhere and it's ridiculous.
swampbog is offline   Reply With Quote
Old 01-01-2016, 12:50 PM   #748
diceman50
Registered User
 
Join Date: Nov 2013
Location: Midland, Texas
Posts: 203
Re: 1976 Square "Simple Green"

I have a friend who installed one on a Bronco. Engine would start and then die. Changed the battery and it ran great for a while. Then it wouldn't start at all. It burned up a couple of the pins in the power connector. (the yellow one) He sent it back to FiTech and I have not heard the outcome.

I am getting ready to put one on a friends 69 Camaro. We have already decided if we have any of these issues we will just use the throttle body and the injectors and run it with a GM computer like we are doing with the Retrotec throttle bodies on my Apache. I hope it doesn't come to that.
__________________
"In an insane world a sane man must appear insane" ~Spock~
diceman50 is offline   Reply With Quote
Old 01-01-2016, 12:51 PM   #749
RodsGreen10
Registered User
 
RodsGreen10's Avatar
 
Join Date: Jun 2015
Location: Richmond,KY and Knoxville,TN
Posts: 1,584
Re: 1976 Square "Simple Green"

This is how I described it to Jeremy from FiTech. Imagine it like this battery on the left junction box on the right starter in the middle. They all connect at the start which is the center point. So what would it make a difference connecting at battery vs junction box. It all runs to the starter.
RodsGreen10 is offline   Reply With Quote
Old 01-01-2016, 12:54 PM   #750
RodsGreen10
Registered User
 
RodsGreen10's Avatar
 
Join Date: Jun 2015
Location: Richmond,KY and Knoxville,TN
Posts: 1,584
Re: 1976 Square "Simple Green"

Looks like this. So you have a visual. The batter terminal and the terminal from the junction block connect on the same stud on the starter. So how in the hell is connecting direct to be battery different that how I have it hooked it is getting the same voltage it is tied into the battery?
Attached Images
 
RodsGreen10 is offline   Reply With Quote
Reply

Bookmarks


Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off

Forum Jump


All times are GMT -4. The time now is 04:15 AM.


Powered by vBulletin® Version 3.8.11
Copyright ©2000 - 2024, vBulletin Solutions Inc.
Copyright 1997-2022 67-72chevytrucks.com