did hei mod and still having problems

dillon · Post by **dillon** » May 30th, 2007, 9:20 pm

i installed the new ignition modual from a 82 chevette as per the write up, wired it up all ok, double,triple checked it and it still wont start, it worked fine for 1 day and now its dead, just will roll over, it seems now like it was a problem that was getting worse and worse, and now what ever was going is gone, i didnt pull and codes yet, there were none the day before it crapped the bed,

any ides, any other common problems. fuel filter or pump mabey, i need my wheels, thanks

Post by **Custommx3** » May 31st, 2007, 9:40 am

Same problem as before the HEI mod?
Did the mod and it worked for 1 day and back again? or worked fine till the HEI mod?

ho bag · Post by **ho bag** » May 31st, 2007, 5:31 pm

Custommx3 wrote:Same problem as before the HEI mod?
Did the mod and it worked for 1 day and back again? or worked fine till the HEI mod?

The car was dieing intermitently, random...Then after a random amout of time it woudl start again, Sometimes minutes....some times days.

He did the hei mod as per the faw, cut the orange wire (top of 6pin connector) and its still no better. I believe he got a cam sensor code before the mod as well (or was it crank sensor?)

Next step is probally to try an external coil incase thats what died. Or maybe a new crank sensor.

BTW, this is my old car thats why i know all this

dillon · Post by **dillon** » May 31st, 2007, 8:12 pm

yeah hobag said it better, but is there anything else to try other than the external coil, any other test i can run before i burn the heap

tehbrookzorz · Post by **tehbrookzorz** » May 31st, 2007, 8:28 pm

Isn't there a strap in the distribuotr that needs to be disconnected?

ho bag · Post by **ho bag** » May 31st, 2007, 8:29 pm

Thats for if your running an external coil

tehbrookzorz · Post by **tehbrookzorz** » May 31st, 2007, 8:32 pm

Ah, I thought the stock ignition module grounded through it as well. Oops.

mx3autozam · Post by **mx3autozam** » May 31st, 2007, 8:48 pm

maybe you need to do the external coil as well

ho bag · Post by **ho bag** » May 31st, 2007, 8:49 pm

He cut the orange 6pin wire off, that stops the ecu signal from getting to the stock modual.

dillon · Post by **dillon** » June 2nd, 2007, 7:16 am

anyother ideas, i got all weekend to mess with it, thanks

dillon · Post by **dillon** » July 8th, 2007, 7:13 am

ok added the external coil, still nothing, i drilled the cap, added the power tower, took off the metal strap inside the dist, wired it up and nothing, im lost

dillon · Post by **dillon** » July 8th, 2007, 12:26 pm

also after cranking for awhile the coil get very hot

dillon · Post by **dillon** » July 11th, 2007, 4:23 pm

no one?

Tunes67 · Post by **Tunes67** » July 11th, 2007, 4:47 pm

Click Here

This is another thread on the HEI mod.. its a fun read and there are some diagrams in there that may help you double check your setup. Not sure why Mnemonics diagrams arent showing up though.. maybe he can get those fixed

Tunes67

Mnemonic · Post by **Mnemonic** » July 11th, 2007, 5:07 pm

maybe i will!