Need Advice On Hei - The 1947 - Present Chevrolet & GMC Truck Message Board Network

beaterC10 · 05-04-2005, 10:27 AM

Please help.

My truck has apparently killed another HEI module. This is the 3rd or 4th time in about a year this has happened. Last time I replaced the cap, rotor, coil, module, and center button in the cap.

The truck is an 84, the ESC has been disconnected and has a non-ESC HEI installed. The ESC plug was not jumpered, simply disconnected. The dizzy module harness was replaced within the past year. The truck has a 350, accel 8.8 wires and accel header plugs.

Is there a chance something related to the power lead to the dizzy is the culprit?

I am getting close to stuffing a rag in the gas tank and lighting it.

NeCrOmAnCeR · 05-04-2005, 12:25 PM

Have you been using the recomended heat conducting paste under the module? If not that is more than likely the problem, those modules can't take the heat.

beaterC10 · 05-04-2005, 12:30 PM

Every time I have replaced the module.

86 GMG · 05-04-2005, 03:34 PM

have you checked for maybe a bare spot in the wiring that is grounding out and killing your module??? other than that are you pushing some kind of big stereo

that might be serging the system of the truck? good luck!!!!

86swb · 05-04-2005, 04:55 PM

I had my heads worked on and after the HEI was put back in the truck went only about 100 miles and the HEI went out. Had mecanic put another in and he told me I needed to have a spacer put under the HEI because of the head being taken down. Did not make since to me but no more problems. Go figure.

Tom · 05-04-2005, 05:30 PM

I want to say its because of the accel stuff your running, I had nothing but problems with that company when I used to use them. I would suggest putting a standerd hei distributor in there and see what happens. Only around $20 from a u-pull junkyard if you already have your own internals.

05-04-2005, 10:27 AM	#1
beaterC10 Senior Member Join Date: Jul 2003 Location: Indianapolis, IN Posts: 1,277	Need Advice On Hei Please help. My truck has apparently killed another HEI module. This is the 3rd or 4th time in about a year this has happened. Last time I replaced the cap, rotor, coil, module, and center button in the cap. The truck is an 84, the ESC has been disconnected and has a non-ESC HEI installed. The ESC plug was not jumpered, simply disconnected. The dizzy module harness was replaced within the past year. The truck has a 350, accel 8.8 wires and accel header plugs. Is there a chance something related to the power lead to the dizzy is the culprit? I am getting close to stuffing a rag in the gas tank and lighting it.

05-04-2005, 03:34 PM	#4
86 GMG Registered User Join Date: Apr 2005 Location: Tulsa Oklahoma Posts: 943	have you checked for maybe a bare spot in the wiring that is grounding out and killing your module??? other than that are you pushing some kind of big stereo that might be serging the system of the truck? good luck!!!! __________________ square body trucks an addiction or an investment either way they consume all my extra time and money

05-04-2005, 05:30 PM	#6
Tom driving is in my blood Join Date: Dec 1999 Location: Mesa AZ Posts: 5,748	I want to say its because of the accel stuff your running, I had nothing but problems with that company when I used to use them. I would suggest putting a standerd hei distributor in there and see what happens. Only around $20 from a u-pull junkyard if you already have your own internals. __________________ -78 c10 short/step: 388cid, M20, 5/5 drop, lots more. Playtoy and first vehicle. -98 c1500 x-cab: 5.7L, 17" rims, 5/6 drop, flowmaster, helper bags,NBS rear disk brakes. -02 Suburban 4x4: leveled front -CBR600F4i, CBR600RR, CBR1000RR, and standup skis DISCLAIMER: I cant spell for the life of me.

05-04-2005, 12:25 PM	#2
NeCrOmAnCeR Registered User Join Date: Feb 2004 Location: Hodgenville, Ky Posts: 735	Have you been using the recomended heat conducting paste under the module? If not that is more than likely the problem, those modules can't take the heat.

05-04-2005, 12:30 PM	#3
beaterC10 Senior Member Join Date: Jul 2003 Location: Indianapolis, IN Posts: 1,277	Every time I have replaced the module.

05-04-2005, 04:55 PM	#5
86swb Born a Chevy Man Join Date: Apr 2005 Location: Navarre, Florida Posts: 10,221	I had my heads worked on and after the HEI was put back in the truck went only about 100 miles and the HEI went out. Had mecanic put another in and he told me I needed to have a spacer put under the HEI because of the head being taken down. Did not make since to me but no more problems. Go figure.



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