I've got a '90 100Q with 125k on it, and the cooling fan doesn't work. Lately, it's been in the '90s and I've had to turn on the heat to HI to avoid overheating. The fusible link is OK, and turning on the A/C doesn't run the fan. Is this a possible problem with the climate control unit, or is there something easy to check? TIA for any help, Don