1984 Silverado ECM?

Grapejuice1998 · 01-29-2009, 01:07 PM

Hello all! I'm new here. I'll post up an intro in a few minutes, but I need to get some info as fast as I can, so I wanted to post my problemn first.

I know there is some kind of ECM behind the glove box on my 1984 Chevy Silverado, because it has gone bad on me before. I special ordered it for about $200. It appears that less than a year later, it has gone bad on me again. I know it's not the module, as I has swapped modules and even entire distributors. The only thing that will make it fire, is that stupid box.

I have heard of wiring past the box. Exactly how is that done? Can anyone help me out with that?

Thanks for any info!

Alan
Dallas, TX
1984 1/2 ton with upgrades

silverhairdeere · 01-29-2009, 02:28 PM

where did you get it , did it have a guarantee ,if not you might try junk yard or ebay , as far as rewiring ,it might be done but do to all the sensors very very hard , if yours is carb you could wind up with points or early electronic ignition all this is far far above my head . try a INTERNET search .

shd

batty1214 · 01-29-2009, 03:12 PM

I didn't know that 84 chevys came with an ecm...... huh.. learn something new everyday....I didnt know carbs had to have them either

Grapejuice1998 · 01-29-2009, 05:22 PM

Quote:

Originally Posted by silverhairdeere

where did you get it , did it have a guarantee ,if not you might try junk yard or ebay , as far as rewiring ,it might be done but do to all the sensors very very hard , if yours is carb you could wind up with points or early electronic ignition all this is far far above my head . try a INTERNET search .

shd

Tried the search. Then after finding nothing, I searched for truck forums.

Grapejuice1998 · 01-29-2009, 05:28 PM

[quote=batty1214;90366]I didn't know that 84 chevys came with an ecm...... huh.. learn something new everyday....I didnt know carbs had to have them either[/quote

It is a carb'd truck.

I didn't know they had an ECM either, until it quit the first time. It's not that complicated, just a few wires in and out. I believe it's more of a spark knock controller, but there are resistors and diodes on a circuit board inside and one of them must be the + to the distributor.
I have also considered trying to fix it. I may still give that a shot, but I'd rather just be able to get rid of it.

bradrhale · 01-30-2009, 06:44 AM

is this a spark control module??

silverhairdeere · 01-30-2009, 07:28 AM

Quote:

Originally Posted by bradrhale

is this a spark control module??

when i looked it up it is a ecm . and expensive

shd

silverhairdeere · 01-30-2009, 10:18 AM

i found this at advance , don't know which motor you have , so this is for a 5.7 (350_ they also have a interchange list too.
While we find your parts, please enter your ZIP Code at PartsAmerica.com

shd

Grapejuice1998 · 01-30-2009, 11:49 AM

Quote:

Originally Posted by silverhairdeere

i found this at advance , don't know which motor you have , so this is for a 5.7 (350_ they also have a interchange list too.
While we find your parts, please enter your ZIP Code at PartsAmerica.com

shd

Hey, that's pretty slick and not very expensive. Thanks shd!!

batty1214 · 01-30-2009, 07:49 PM

huh.... maybe I sold my 84 for nothing big.... dang it.....

01-29-2009, 01:07 PM	#1
Grapejuice1998 Full Member Join Date: Jan 2009 Location: Dallas, TX Posts: 34	1984 Silverado ECM? Hello all! I'm new here. I'll post up an intro in a few minutes, but I need to get some info as fast as I can, so I wanted to post my problemn first. I know there is some kind of ECM behind the glove box on my 1984 Chevy Silverado, because it has gone bad on me before. I special ordered it for about $200. It appears that less than a year later, it has gone bad on me again. I know it's not the module, as I has swapped modules and even entire distributors. The only thing that will make it fire, is that stupid box. I have heard of wiring past the box. Exactly how is that done? Can anyone help me out with that? Thanks for any info! Alan Dallas, TX 1984 1/2 ton with upgrades

Thread Tools	Search this Thread
Show Printable Version Email this Page	Search this Thread: Advanced Search

Similar Threads
Thread	Thread Starter	Forum	Replies	Last Post
1984 Chevy Silverado	flashover1357	Chevy Truck Forum	3	07-14-2008 05:58 AM
1984 C-30	bigolchevy	Chevy Truck Forum	1	06-12-2008 06:06 PM
1984 Nissan 720	84-720	Nissan Truck Forum	1	01-25-2008 12:02 AM
1984 Suburban Silverado, good deal?	air1mtt	Chevy Truck Forum	14	07-17-2007 01:13 PM
1984 Ford	Nick_F150	Ford Truck Forum	30	06-16-2006 09:34 AM

01-29-2009, 02:28 PM	#2
silverhairdeere Senior Member Join Date: Feb 2008 Location: land between the lakes tn Posts: 1,184	where did you get it , did it have a guarantee ,if not you might try junk yard or ebay , as far as rewiring ,it might be done but do to all the sensors very very hard , if yours is carb you could wind up with points or early electronic ignition all this is far far above my head . try a INTERNET search . shd

01-29-2009, 03:12 PM	#3
batty1214 Senior Member Join Date: Nov 2008 Location: Vernal Utah Posts: 1,135	I didn't know that 84 chevys came with an ecm...... huh.. learn something new everyday....I didnt know carbs had to have them either

01-29-2009, 05:28 PM	#5
Grapejuice1998 Full Member Join Date: Jan 2009 Location: Dallas, TX Posts: 34	[quote=batty1214;90366]I didn't know that 84 chevys came with an ecm...... huh.. learn something new everyday....I didnt know carbs had to have them either[/quote It is a carb'd truck. I didn't know they had an ECM either, until it quit the first time. It's not that complicated, just a few wires in and out. I believe it's more of a spark knock controller, but there are resistors and diodes on a circuit board inside and one of them must be the + to the distributor. I have also considered trying to fix it. I may still give that a shot, but I'd rather just be able to get rid of it.

01-30-2009, 06:44 AM	#6
bradrhale Senior Moderator Join Date: Apr 2006 Location: Texas Posts: 8,030	is this a spark control module??

01-30-2009, 10:18 AM	#8
silverhairdeere Senior Member Join Date: Feb 2008 Location: land between the lakes tn Posts: 1,184	i found this at advance , don't know which motor you have , so this is for a 5.7 (350_ they also have a interchange list too. While we find your parts, please enter your ZIP Code at PartsAmerica.com shd

01-30-2009, 07:49 PM	#10
batty1214 Senior Member Join Date: Nov 2008 Location: Vernal Utah Posts: 1,135	huh.... maybe I sold my 84 for nothing big.... dang it.....