Why might the blower motor on a 1989 Oldsmobile run all the time?

Answer 1

The relay for the blower motor might be stuck , or the switch is bad . I have a 1983 Oldsmobile 88. A few days ago the blower motor for the A/C, Vent, Heater kept running after I turned off the ignition and got out of the car. It is located under the front hood in the engine compartment against the firewall. I went into the store and when I returned it was still running. Later that day the A/C stopped working. Well it wasn't the AC it was the blower. It didn't work on AC, heater, or vent. The manual I got at the autoparts store indicated a couple of relays under the hood, under the dash on the right and left sides, and fuses also. I swapped all the relays to find out if it would start working and something else would stop but the blower still would not run. The next day I went outside to find the blower was running when I walked up to the car. I started the engine and the a/c worked fine. I disconnected the blower plug under the hood to prevent the battery from going dead. So I have two problems. The blower running with the engin off, then it not working at all for two days. If anyone has had a similar problem please comment. Also where specifically is the blower relay. I don't think I have found the correct one. Thank you, Mark