need help with lt1 check engine light
#1
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i have a 94 camaro with the lt1 swap well this is the 1st time in 2 years the check engine light came on and when i put the diagnostic snap on tool on it and it says no communication. but what it is doing is about 20 seconds after its running the check engine light comes on and the fans kick on can anybody help me i've replaced the coolant temp switch, coolant sensor, map sensor, maf sensor, tps sensor idk what else to try i need help...