truck fires and operates fine Coil will last about 12 to 15 starts depending on distanced traveled. truck will run find, shut it down and it will not refire. You can replace the coil and it will fire right up eventually the module will fry and have to be replaced . I have added a ballist resistor, this lowered the operating temp. 20 to 30 degrees but did not solve the problem. Help!!! I've been thru 5 or 6 coils and three ignition modules.
2007-05-19 05:29:51 · 4 answers · asked by Anonymous in Cars & Transportation ➔ Maintenance & Repairs
Wrong spark plugs, or impropperly gapped spark plugs.
Worn distributor cap center core?
Missing little spring under the coil inside dist. cap?
2007-05-19 05:34:14 · answer #1 · answered by Mr. KnowItAll 7 · 0⤊ 0⤋
GM High Energy Ignition ( HEI ) have had module problem in their history. BUT ...you said when you hit a bump....might be the Pick- Up Coil in the distributor...that's the little white looking thing that the distributor shaft goes down the center of. If you truck has lots of miles it may need a whole new distributor. Rebuilts are common and not that expensive and usually come with a pick up coil and module .
2016-05-17 10:41:41 · answer #2 · answered by ? 3 · 0⤊ 0⤋
i own a repair shop,and i can tell you whats causing this ,most likely you have a bad ground to the engine and to the body,and its using the distributor as a ground point,that's why its burning coils up like that ,i have seen the same problem a few other times,you need a good ground from the battery to the body ,and also to the engine,and also one to the frame,and then it will stop this,that's going to get real expensive after a while,but it must have good ground wires so it doesn't try to pull a ground through the distributor,that's real important on gm products especially when they have hei ignition,good luck with it hope this helps,
2007-05-19 05:39:46 · answer #3 · answered by dodge man 7 · 1⤊ 0⤋
a hei distributor does not need a ballast resistor! it needs a full 12v going to it at all times. now when you changed your ignition module, did you put that white stuff on the bottom of it before you mounted it inside the dist.? if i remember right, it's to help dissipate the heat. if you did not, then this is why you are going thru components.
2007-05-19 05:35:04 · answer #4 · answered by sosaman 3 · 0⤊ 0⤋