4.3 TBI.... 1 Injector doesn't fire randomly!

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Jboy2
I sleep in my van
I sleep in my van
Posts: 272
Joined: Tue Jun 05, 2007 12:23 pm
Location: Scarborough, Ontario

4.3 TBI.... 1 Injector doesn't fire randomly!

Post by Jboy2 »

Hello,

91 astro with a 4.3 TBI motor. Randomly the truck will hesitate (could be for a second or over 40 seconds) and sometime stall when sitting at a light. (When stalled, it will start back up right away)
Well, i did some investigating and found out that when this happens, one of the injectors stops working. So i swapped the injector wiring around, and now the other injector stops working randomly. This means it has to be an electrical issue. I've traced the wire and checked for breaks.


Anyone have any suggestions on what would cause this?

Thanks! :D
1991 Chevy Astro Extended- Stock 4.3

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