I've got a heating problem in my Toyota Corolla (97). I've checked the relay under the hood (about the limit of my skills) but cannot see any problem. I cannot however find a fuse for the heater (again just within my limits) so was wondering if anyone can point me in the direction of such a fuse or any other "unplug and check" type things I can try before calling on my very reliable mechanic. I just can't take the "can you fix nothing?" looks that he always gives me when I drop the car off with a small problem.
- If you need clarification, ask it in the comment box above.
- Better answers use proper spelling and grammar.
- Provide details, support with references or personal experience.
Tell us some more! Your answer needs to include more details to help people.You can't post answers that contain an email address.Please enter a valid email address.The email address entered is already associated to an account.Login to postPlease use English characters only.
Tip: The max point reward for answering a question is 15.
With engine warmed up, feel of heater hoses under hood to see if both are warm (careful don't burn yourself). If they both are warm, flapper door which directs airflow through heater is not working, probably because the actuator is bad or you have a vacuum leak. Check line under hood which goes to vacuum reservoir for vacuum, and check one way valve(check valve). Replace any old soft or cracked vacuum lines.
You've figured out by now the blinking light means the system has a problem. You'll need to find out if the system is low on freon or if a relay or electrical part is failing. The cooling fan could also be failing to come on, which would make the high side pressure exceed the limit and shut down the system.
clean or replace the in cabin air filter located behind the glove box. Remove the screw that holds the limit rod the the glove box, then squeeze both sides of the glvoe box to remove from dash. The air filter is behind the removable rectangular panel. See owner's manual for complete directions. Replace the AC clutch relay, $11 from rockauto.com. The relay is located in the under hood fuse box next to the battery. It is labeled M/G CLT.
Sounds like you have air trapped in the heater core when you flushed the heater core. loosen the upper most heater core hose and run the engine untill coolant seeps out. Wait until the coolant has reached running temperature.
You may need to recharge your AC. The AC clutch relay seems to be a high failure item for this car. You can test by swapping relays under the hood. The AC clutch relay is located next to the negative battery post in the fuse box under the hood on the driver's side fender. It is the smaller relay marked "M/G CLT". This is available from Rockauto.com, $11.