LT1 Based Engine Tech 1993-1997 LT1/LT4 Engine Related

SES light on

Old Apr 9, 2008 | 10:18 AM
  #1  
darlandz's Avatar
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Posts: 95
From: ohio
SES light on

So maybe someone else has had this problem my service engine light is on and here is what it does i must hold the key down for id say 5 seconds then i stop and and do it again and it usually starts up around 3 seconds after the second time. Also when it starts the rpms kinda hang around 2k then slowly drop also and when the car is running the fans are also running right from the get go. i took it to the dealership and they hooked it up to a computer for a short time and said theres a problem with the high or low signal s with the wires im not sure where i think it was around the coil and optispark. Any help would be appreciated. o yeah and it drives fine
Old Apr 9, 2008 | 11:30 AM
  #2  
moparman's Avatar
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Posts: 2,761
From: Louisville, KY
Did they give you the code number? It's important to know that. It sound like with the high and low signals it might be the optispark.
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