hello everyone.. i need some help here.. i have a 93 civic dx.. i bought with a down grad swap which is a d15b8.. i swapped the head to a 1.5 vtec.. the problem im having is 2 engine check lights..1 is code 21 and the other is 1.. i know what 1 is for.. but i dont know what 21 is for.. when i...
hello everyone.. i need some help here.. i have a 93 civic dx.. i bought with a down grad swap which is a d15b8.. i swapped the head to a 1.5 vtec.. the problem im having is 2 engine check lights..1 is code 21 and the other is 1.. i know what 1 is for.. but i dont know what 21 is for.. when i...
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