HEI ignition module fails at high temp??
Thread Starter
Instructor
Joined: May 2016
Posts: 154
Likes: 2
From: Europe
HEI ignition module fails at high temp??
Hello!
I have this issue with my C3 -74 that it randomly stops when I have been driving for a while in hot weather.
It just stops like that, no sputtering just a "clean" stop...when it stops I just let it roll to the side of the road and then I just start it up again and it would work fine for the rest of the ride....
Anyone else had a similar problem and the fault was found in the HEI ignition module??
IF that ignition module overheats will it cool down that fast (about 30 sec.) and the work fine again for a long time??
I have this issue with my C3 -74 that it randomly stops when I have been driving for a while in hot weather.
It just stops like that, no sputtering just a "clean" stop...when it stops I just let it roll to the side of the road and then I just start it up again and it would work fine for the rest of the ride....
Anyone else had a similar problem and the fault was found in the HEI ignition module??
IF that ignition module overheats will it cool down that fast (about 30 sec.) and the work fine again for a long time??
Last edited by cromwell74; May 31, 2020 at 02:52 PM.
Dr. Detroit
Joined: Mar 2012
Posts: 10,097
Likes: 4,027
From: New Braunfels Texas
It is possible but also can be a collapsed hose back by the fuel tank to the steel line..........if it quits again, keep a spark tester in the car and roll it over, if it does not light, then yes.....the module may be getting hot. The module is cooled by the distributor housing and a smooth coating of heat sink grease is necessary for proper heat transfer. If it does spark, then remove the air cleaner and crack the throttle a few times to see if you are getting accel pump squirt......if not, then it is fuel supply of course.
Jebby
Jebby
Drifting
Joined: Mar 2006
Posts: 1,263
Likes: 188
From: Wabasha Mn
Hello!
I have this issue with my C3 -74 that it randomly stops when I have been driving for a while in hot weather.
It just stops like that, no sputtering just a "clean" stop...when it stops I just let it roll to the side of the road and then I just start it up again and it would work fine for the rest of the ride....
Anyone else had a similar problem and the fault was found in the HEI ignition module??
IF that ignition module overheats will it cool down that fast (about 30 sec.) and the work fine again for a long time??
I have this issue with my C3 -74 that it randomly stops when I have been driving for a while in hot weather.
It just stops like that, no sputtering just a "clean" stop...when it stops I just let it roll to the side of the road and then I just start it up again and it would work fine for the rest of the ride....
Anyone else had a similar problem and the fault was found in the HEI ignition module??
IF that ignition module overheats will it cool down that fast (about 30 sec.) and the work fine again for a long time??
Safety Car
Joined: Nov 2005
Posts: 3,532
Likes: 1,185
From: Arizona - If you don’t know CFI, STOP proliferating the myths around it...
Le Mans Master
Joined: Sep 2001
Posts: 7,739
Likes: 630
From: Unreconstructed, South Carolina
OP Finland
Perhaps R&R module
FYI Very same module maybe available locally as it's also OE in following European cars (No sh7t):
Bertone X-1/9 (89-84)
Fiat 124 (83-77)Fiat 128 (79-77)Fiat 131 (78-77)Fiat Brava (81-79)Fiat Strada (82-79)Fiat X-1/9 (83-79)
Lancia Beta (81, 79-76)
Peugeot 505 (83-80) Peugeot 604 (80-77)
Renault Fuego (85-82)Renault LeCar (84-80)Renault R18 (81)Renault R18i (83-81)
Perhaps R&R module
FYI Very same module maybe available locally as it's also OE in following European cars (No sh7t):
Bertone X-1/9 (89-84)
Fiat 124 (83-77)Fiat 128 (79-77)Fiat 131 (78-77)Fiat Brava (81-79)Fiat Strada (82-79)Fiat X-1/9 (83-79)
Lancia Beta (81, 79-76)
Peugeot 505 (83-80) Peugeot 604 (80-77)
Renault Fuego (85-82)Renault LeCar (84-80)Renault R18 (81)Renault R18i (83-81)
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