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Old 07-06-2006, 09:46 PM
bigpoppaspo's Avatar
bigpoppaspo bigpoppaspo is offline
Join Date: Jul 24, 2005
Location: Locust, NJ
Posts: 37
driving down the road... then nothing

my '90 gw stalled on me down the road, which hasn't happened really ever since i have installed tfi and the msd 6a. Still, it usually starts back up when I crank it (it was a good sign that it was still cranking). However, there was no spark at all when I checked it out. What do you think happened? It has the MSD tfi coil as well. I replaced the coil with one from NAPA and still got nothing. I checked for spark at the end of one of the wires, but still nothing. This has never happened to me before. And ideas? Thanks.
'90 Grand Wagoneer 166k (ORIGINAL OWNER), TFI , MSD 6A
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Old 07-06-2006, 10:04 PM
Eugene 1's Avatar
Eugene 1 Eugene 1 is offline
Bleedin' Gasoline
Join Date: Feb 04, 2006
Location: La Crosse,Wisconsin ,Wichita ks, Oklahoma City
Posts: 1,845
voltage regulator ? alternator? bad connection?
1970 Charger Daytona
2005 Ram 1500 Hemi
1979 Cherokee Dodge CTD with running Gear Build thread
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Old 07-06-2006, 10:15 PM
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Jayrodoh Jayrodoh is offline
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Join Date: Sep 07, 2004
Location: Cleveland
Posts: 3,221
I've heard some stories of MSD's crapping out early. Not built like they used to be. Mines been good for 2 years, but I've only put 10K on it in two years.

Are yo uusing the factory ignition module to trigger it or are you wired directly to the dist. If direct, try disconecting the purple and green wires from the dist and touch/release the white wire from the MSD module to ground and see of you get a spark. This will rule out the MSD module. If you have 12 volts to the MSD on the batt wires, 12 volts on the smaller red, you should get a spark when you remove the white wire from ground.

If you're still using the factory igntion module to trigger the MSD, rewire it so you don't, hook the MSD directly to the dist, eliminates one link in the chain. Keep it simple.
Honey?? What happened to the savings account? You bought a Jeep what??

86 Grand Wag Stock with Bulltear HEI
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