Ok i bought dc2 teg and its throwing code 90 and the oringinal owner said it started throwing cel after he installed the skunk2 intake manifold, but i can reset the ECU and drive about 50 or so miles and then it will click back on....can some help me out im stumped

 

90 Evaporative Emission Control System leak detected in the fuel tank area


If it came on right after the skunk2 IM install, check out the evap solenoid on the IM....or lack there of.