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| Fiero wont start, ran fine before. has proper fuel delivery but no spark, HELP (Page 1/2) |
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TheFieroKid
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JAN 12, 08:52 PM
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Ok, so I go outside to try to start my Fiero formula, but it did not start. I thought to myself "Oh, its no big deal, I'll just push it into the barn and put it on the car lift. so I finally get it on the lift and i begin doing the process of elimination. first, I checked if I had fuel pressure. Check. next i checked if I had spark. Na da. to test the spark I tried testing it by pulling the spark plug off the engine. when I found I wasn't getting spark to the plug, I unplugged the spark plug and tested the wire. still no spark. after that i checked the coil and it seemed to be working fine, but spark was still not getting to my engine. I checked the plug wires as well with a multi meter to see if they were functional, and yes indeed they were. clearly I'm getting a charge, but I'm not getting any spark.
hopefully someone else has any ideas, because i read through the sections in the chiltons, haynes AND the 1988 factory service manual to no prevail.
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Mike in Sydney
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JAN 12, 08:55 PM
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Just a hunch but try the Ignition control module (IGM). ------------------
Mike in Sydney
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Gall757
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JAN 12, 09:10 PM
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Patrick
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JAN 12, 09:26 PM
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| quote | Originally posted by TheFieroKid:
i checked the coil and it seemed to be working fine
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What does that even mean? How'd you check it? What is "seemed to be working fine"?[This message has been edited by Patrick (edited 01-12-2020).]
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sledcaddie
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JAN 12, 10:55 PM
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If you crank the engine over, and the tach still registers, I believe it's probably the ignition module in the distributor.
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fierosound
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JAN 12, 11:43 PM
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| quote | Originally posted by sledcaddie:
If you crank the engine over, and the tach still registers, I believe it's probably the ignition module in the distributor. |
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I've replaced dead distributor modules.
If you crank it over, and the tach DOES NOT even twitch - then it's the distributor module. (possibly pickup coil)
If tach moves, it's something else like coil or fuel problem.
------------------
My World of Wheels Winners (Click on links below)
3.4L Supercharged 87 GT and Super Duty 4 Indy #163[This message has been edited by fierosound (edited 01-12-2020).]
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TheFieroKid
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JAN 14, 02:35 PM
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Thank you for the help guys, turns out it was the distributor plug module. I think that's what its called at least. Now my Fiero is actually running better than it ever has before.
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Gall757
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JAN 14, 04:29 PM
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Ignition Control Module, or ICM
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Patrick
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JAN 14, 05:59 PM
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And hopefully you used the proper heat sink compound between the ICM and the base of the distributor.
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Raydar
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JAN 14, 06:00 PM
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| quote | Originally posted by TheFieroKid:
Thank you for the help guys, turns out it was the distributor plug module. I think that's what its called at least. Now my Fiero is actually running better than it ever has before. |
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Excellent! (Plug module?)
Regardless, thanks for popping back in and sharing what the fix was.
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