| FAQ |
| Members List |
| Social Groups |
| Calendar |
| Search |
| Today's Posts |
|
#1
07-12-2020, 09:15 PM
|
|||
|
|||
70 trans am wiring harness HEATING UP
A buddy with a 20,000 mile 1970 Trans am is having underhood wiring harness issues.The harness from the firewall to the coil is too hot to touch. Bad coil maybe ?? Any help would be awesome.
Thanks in advance
__________________
Steve Thomas  Dallas, GA 1950 Chevy truck red/original drive train 1967 Camaro SS silver w/black stripes 8.91@153mph 1969 Camaro SS 350 white w/black stripes 1971 Firebird 350 matching #'s white/blue int. 1975 Trans Am Blown 509 blk. 1975 Trans Am 400 matching #'s silver,loaded 1979 Trans Am 301 matching #'s,black 1980 Trans Am 301 matching #'s,t-tops,blue 1982 Mitsubishi drag truck 383 sb runs 9.92@ 133mph |
|
#2
07-12-2020, 10:18 PM
|
||||
|
||||
|
If stock, somewhere in that circuit is a piece of "resistance wire". Takes the place of a ballast resistor. It will run hot. High performance coil will make it even hotter.
__________________
My Pontiac is a '57 GMC with its original 347" Pontiac V8 and dual-range Hydra-Matic. |
|
#3
07-13-2020, 10:34 AM
|
|||
|
|||
|
The resistance wire Bill mentioned is where your harness is heating up.
Is the engine running like it's suppose to? Under what conditions are you feeling of the wires? Point distributor or electronic? A narrow point gap will make the resistance wire get hotter than normal with engine running. Key 'on', engine off, points closed... And the resistance wire can get smoking hot. Key 'on', engine off, points open... The resistance wire shouldn't heat up at all. Clay |
| Reply |
|
|
The PY Online Forums is the largest online gathering of Pontiac enthusiasts anywhere in the world. Founded in 1991, it was also the first online forum for people to gather and talk about their Pontiacs. Since then, it has become the mecca of Pontiac technical data and knowledge that no other place can surpass.
Linear Mode
