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09-16-2008, 11:09 PM
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#1 |
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Registered User
Join Date: Feb 2008
Location: Surprise, Ariz.
Posts: 186
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hei dist
What are the symptoms of a bad dist module? 73 gmc lbed
 engine running rough |
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09-16-2008, 11:27 PM
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#2 |
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Robert Olson Transport
 
Join Date: Oct 2002
Location: recent transplant to NC USA
Posts: 20,310
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Re: hei dist
pickup coil or the module? usually modules either work or dont you get no spark... the pickup coil that usually means there is weak spark or you get no spark when you try to give the motor gas
__________________
Bob 1951 International running on a squarebody chassis "If a man's worth is judged by the people he associates himself with, then i am the richest man in the world knowing some of the fine people of this board" http://67-72chevytrucks.com/vboard/a...t.php?f=25&a=9 (you can review the site rules here!) PM Me for your vehicle/parts hauling needs in the North East US or see my Facebook page Robert Olson Transport Live each day to the fullest.. you never know when fate is going to pull the rug out from under you... I hate cancer!! |
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09-17-2008, 02:14 PM
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#3 |
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huh ???
Join Date: Nov 2002
Location: Fredericksburg,Va.
Posts: 3,368
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Re: hei dist
I sit a swap you just did, or has it been in a while? 73 originally had points...
Chuck
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90 Blazer Silverado 350w/ 700R4 and 32" Kelly's "I am a bomb technician. If you see me running try to keep up!" |
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09-17-2008, 07:47 PM
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#4 |
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Tonawanda 454
Join Date: Mar 2004
Location: Liquid Sunshine State
Posts: 2,754
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Re: hei dist
if it is a HEI setup: when I had the problem (on my 76 C1500) the truck would run until it got hot and then just die... if it was hot summer day it would be a matter of 5 minutes, if it was a cooler day it would run for 20 minutes... either way it would just die. I could let it sit for a minute then it would fire right back up and die again 2 minutes later... had to do this on my way to work which is usually a 7 minute drive... took me 20 minutes to get there... Luckily it was cool that night on the way home so I got 2 houses away before it died so I just put it in Neutral and coasted home.
I tried the coil, HEI, rotor, dist cap, plugs, plug wires... until I talked with a chevy tech down the street (he works at a chevy dealer/repair shop and has for 20 years) and he said on these older ones check the module or the fuel pump. Sure enough as soon as I replaced it the module it worked fine, never had a problem since (well I sold it a year later but still see it around town). In your case, I would say check the usual plugs, wires, rotor, etc... and the coil may not be giving enough spark causing the roughness... or it could be the fuel pump getting ready to go out... I am sure it could be a few other things but we would need more info.
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91 Chevy Suburban Tonawanda 454 R2500 - SOLD!!!  04 Dodge Durango 5.7L Hemi 2WD, 24K miles (as of July 2011) In the past 30 years about 90% of Fords are still on the road, the other 10% made it home. ------------------- Last edited by screwballl; 09-17-2008 at 07:49 PM. |
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09-27-2008, 09:15 AM
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#5 |
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Registered User
 
Join Date: Oct 2006
Location: Southern Kalifornia
Posts: 3,066
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Re: hei dist
does it "POP" through the carb or exhaust? Run a compression test. I have had several trucks the ran rouhg and did COMPLETE tune-ups just to find out I had a burnt valve.
-Lance
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------------------------------------------------------ -Lance 2000 Chevy C2500, 5.7, 4L80e 1999 Suburban K2500, 7.4, 4L80e 1980 Camaro..son's car...PROJECT |
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