hey all, newbie to this forum. we just bought a 98 EX. it's in cherry like condition, but after my gf took it out the other night, she told me that the CEL was tripped but that the car was running fine. i took it for a spin and noticed that the idle becomes noticeably rougher once i switch the AC on while at stop.i wont be able to get the codes read until later on in the week, but i was wondering if anyone else has an idea of what may be causing this, or if this is a well known or common problem in these vehicles. i wouldnt call myself a gearhead by any means, but i am fairly mechanically inclined and understand your basic car jargon im not afraid to turn the wrenches, so fire away if you have any opinions, or info. thanks in advance.

 

Find out what the code is first, the computer may be running in default or there could be another reason for the low idle.
Adjusting idles before finding the real problem could be a waste of time.
You can find most of the codes in the DIY forum.