i saw a thread on the ignition coils, my son has inherited a 1998 s90 and i would like to check these cause we have a bit of a rough idle almost all the time, where might these be located. also the a/c doesn't blow very cold, although at one point i thought i felt it blow very cold for about 5 seconds, any help would be very much appreciated

thanks in advance for any help

 

The coils are under the plastic cover on the top of the engine.Also check the spark plugs.

The A/C is most likely low on freon.

 

thanks, i will check it out