TheAMCForum.com Homepage
Forum Home Forum Home > The Garage > AMC 6 Cylinder Engine Repair and Modifications
  New Posts New Posts RSS Feed - Hei problem
  FAQ FAQ  Forum Search   Events   Register Register  Login Login

Click for TheAMCForum Rules / Click for PDF version of Forum Rules
Your donations help keep this valuable resource free and growing. Thank you.

Hei problem

 Post Reply Post Reply Page  <12
Author
Message
Anthony2622 View Drop Down
AMC Apprentice
AMC Apprentice
Avatar

Joined: May/15/2015
Location: Tampa fl
Status: Offline
Points: 78
Post Options Post Options   Thanks (0) Thanks(0)   Quote Anthony2622 Quote  Post ReplyReply Direct Link To This Post Posted: Aug/28/2015 at 8:43pm
Hello thanks to everyone for giving assistance to my daughters boyfriend on his hei problem we installed an hei 1 wire hook up used the starter terminal (blue wire) key on positve worked great at first then would stay running with key off I would unplug hei wire to shut off checked voltage at wire 0 volts key off then I installed relay 25 amp utilizing starter wire same result then tried using original resistor wire to initite relay same result noticed 4.73 volts at relay key off engine running disconnected reistor wire engine shut off voltage at resistor wire 0 volts thinking at this point hei causing all of the problem should I ditch the hei and just go pertronics we were just looking for better reliability than points    Hey everybody a big Thankyou to all who responded the young man sold a real problematic honda accord and bought this rambler not to many 18 year olds want an old rambler these days im proud of him
Back to Top
304-dude View Drop Down
AMC Addicted
AMC Addicted
Avatar

Joined: Sep/29/2008
Location: Central Illinoi
Status: Offline
Points: 6595
Post Options Post Options   Thanks (0) Thanks(0)   Quote 304-dude Quote  Post ReplyReply Direct Link To This Post Posted: Aug/28/2015 at 9:00pm
I wonder if the HEI module is bad or the wrong type... Not an expert on HEI,  but know there are different modules and possibly different ways of how they connect in the circuit.

The HEI should not be self powered,  or bleed power  from the coil excitation.

Other than the issue at hand,  HEI is fairly reliable. 

Sorry to hear it has been a trouble from the get go.
71 Javelin SST body
390 69 crank, 70 block & heads
NASCAR SB2 rods & pistons
78 Jeep TH400 w/ 2.76 Low
50/50 Ford-AMC Suspension
79 F150 rear & 8.8 axles
Ford Racing 3.25 gears & 9" /w Detroit locker
Back to Top
73hornut View Drop Down
AMC Addicted
AMC Addicted
Avatar

Joined: Jul/03/2007
Location: Southern Oregon
Status: Offline
Points: 2698
Post Options Post Options   Thanks (0) Thanks(0)   Quote 73hornut Quote  Post ReplyReply Direct Link To This Post Posted: Aug/28/2015 at 10:47pm
Originally posted by Anthony2622 Anthony2622 wrote:

Ok so here is the deal. With my 1968 Rambler American straight 6, we have installed an HEI distributer to better the startup ect. We then had to install a relay to the frame because the hei was taking too much voltage to crank the starter. The car now started but we think that the hei is holding too much power an it is keeping the relay on. Whenever we turn the key to the off position the car stays running. The only way we can shut the car off is when we disconnect power to the battery or remove the hei wire from the relay to the battery. Any ideas what could be keeping the car on?
It's not "holding" power, you have it wired to constant hot, instead of keyed hot. Wire to fuse panel power on when ignition is in on position. HEI is supper simple, only needs 12v keyed hot.


Edited by 73hornut - Aug/28/2015 at 10:51pm
71 Javelin
74 Gremlin
86 Eagle wagon
Rogue Valley Rumblers
Like Us on FB
https://www.facebook.com/groups/1602825606650796
Back to Top
Anthony2622 View Drop Down
AMC Apprentice
AMC Apprentice
Avatar

Joined: May/15/2015
Location: Tampa fl
Status: Offline
Points: 78
Post Options Post Options   Thanks (0) Thanks(0)   Quote Anthony2622 Quote  Post ReplyReply Direct Link To This Post Posted: Aug/29/2015 at 7:04am
We wired the hei to the fuse panel as in held the wire connected to it an the car still only shut off when we removed the connection an not with the key switch. As for it being keyed constant "hot" we dont have that as the hei is connected to a relay an not a direct connection to the starter.
Back to Top
rocklandrambler View Drop Down
AMC Addicted
AMC Addicted
Avatar

Joined: Feb/09/2013
Location: Nanuet, NY
Status: Offline
Points: 3826
Post Options Post Options   Thanks (0) Thanks(0)   Quote rocklandrambler Quote  Post ReplyReply Direct Link To This Post Posted: Aug/29/2015 at 10:30am
Your posts are somewhat confusing. First you say that the HEI is connected to the fuse panel. WHERE on the fuse panel did you make the connection? Then you say it is connected to a relay and not a direct connection to the starter. Why would you want to hook up a distributor to the starter???
Past AMC's
1974 Hornet X (new)
1975 Gremlin X (new)
1964 Classic 660 Cross Country
1965 American 440-H
Back to Top
Anthony2622 View Drop Down
AMC Apprentice
AMC Apprentice
Avatar

Joined: May/15/2015
Location: Tampa fl
Status: Offline
Points: 78
Post Options Post Options   Thanks (0) Thanks(0)   Quote Anthony2622 Quote  Post ReplyReply Direct Link To This Post Posted: Aug/29/2015 at 11:37am
My bad, we never actually hooked up the hei to the fuse box, we only held the wire on a 12v fuse that starts with the engine on. So we held the connection on the 12v fuse, the car started but would only turn off if we move the wire off the connection. We decided to ditch the HEI an go with the petronic setup. Tired of the hassle. So reverting to this seems to be the simplest choice.
Back to Top
73hornut View Drop Down
AMC Addicted
AMC Addicted
Avatar

Joined: Jul/03/2007
Location: Southern Oregon
Status: Offline
Points: 2698
Post Options Post Options   Thanks (0) Thanks(0)   Quote 73hornut Quote  Post ReplyReply Direct Link To This Post Posted: Aug/29/2015 at 11:37am
Originally posted by Anthony2622 Anthony2622 wrote:

We wired the hei to the fuse panel as in held the wire connected to it an the car still only shut off when we removed the connection an not with the key switch. As for it being keyed constant "hot" we dont have that as the hei is connected to a relay an not a direct connection to the starter.
Some posts on the fuse panel, are constant hot, look for one that is only hot, when the key is in the run position. A light tester will tell you.
71 Javelin
74 Gremlin
86 Eagle wagon
Rogue Valley Rumblers
Like Us on FB
https://www.facebook.com/groups/1602825606650796
Back to Top
EagleFreek View Drop Down
AMC Addicted
AMC Addicted
Avatar

Joined: Oct/11/2008
Location: Fayetteville,TN
Status: Offline
Points: 828
Post Options Post Options   Thanks (0) Thanks(0)   Quote EagleFreek Quote  Post ReplyReply Direct Link To This Post Posted: Aug/29/2015 at 4:04pm
I know with an MSD ignition, it is common for engine run on and the fix is to install a diode after the alternator. Maybe that might fix your problem. http://www.msdignition.com/page.aspx?id=3296 A one amp 100v diode from Radio Shack should be sufficient. 
1986 AMC Eagle Wagon 4.2L/4.0L head, AW4,NP242, Chrysler 8.25" rear. SOLD
1981 AMC Eagle Wagon-As Seen On TV Lost in Transmission

Back to Top
FuzzFace2 View Drop Down
AMC Addicted
AMC Addicted
Avatar

Joined: Jul/05/2007
Location: Angier, N.C.
Status: Offline
Points: 10254
Post Options Post Options   Thanks (0) Thanks(0)   Quote FuzzFace2 Quote  Post ReplyReply Direct Link To This Post Posted: Aug/30/2015 at 10:34am
Originally posted by EagleFreek EagleFreek wrote:

I know with an MSD ignition, it is common for engine run on and the fix is to install a diode after the alternator. Maybe that might fix your problem. http://www.msdignition.com/page.aspx?id=3296 A one amp 100v diode from Radio Shack should be sufficient. 
FYI I heard on the radio yesterday that Radio Shack is no longer so don't know where you could find one now?

It did sound like the relay was wired wrong?
Use the old wire that went to the stock coil as the "switching" wire on the relay.
12 volt power all the time to power the HEI.
Ground wire to relay.

As other said never heard of others having issues wiring up an HEI dist.
Dave ----
TSM = Technical Service Manual

75 Gremlin X v8 for sale
70 Javelin 360/auto drag car
70 Javelin 360/T5 Street car
Back to Top
firefly View Drop Down
AMC Nut
AMC Nut
Avatar

Joined: Dec/23/2008
Location: wi.
Status: Offline
Points: 322
Post Options Post Options   Thanks (0) Thanks(0)   Quote firefly Quote  Post ReplyReply Direct Link To This Post Posted: Sep/05/2015 at 10:24am
SWITCHED 12 volt...it's that simple! It cannot give you any spark without power!
Back to Top
 Post Reply Post Reply Page  <12
  Share Topic   

Forum Jump Forum Permissions View Drop Down



This page was generated in 0.094 seconds.
All content of this site Copyright © 2012 TheAMCForum unless otherwise noted, all rights reserved.
PROBLEMS LOGGING IN or REGISTERING:
If you have problems logging in or registering, then please contact a Moderator or