So i just bought a eg sedan d15b7 when i got it check engine light was on and when i turned on the a/c it would idle really low to the point of almost bogging out a couple days later the ecu fried on me i bought a new ecu and the check engine light that was on turned off with the new ecu first it blinked a few times then shut off and
Still when i turn on the a/c it idles really to the point of bogging out what could be the issue ?

 

take it to a mechanic