Should be IF the car A/C fan isn't on (you could be feeling the air exhausting out the end where it exits the car). If it is blowing with the car A/C fan off then it is blowing enough. So, something may be causing a thermal shutdown, is there any dirt/sand/debris around the amp? If not, is there a bad impedance mismatch on the output to the speakers (ohm the coils from the plug at the amp going to the speakers not the amp side, the values/pinouts are somewhere in the service manual available for download). Is there any specs for how much current the amp draws? Can you measure that value to compare it?


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