I own a 1991 Mazda 929 and recently faced the same dilemma. The upper hose is a 'no-brainer' on mine because it is a simple bend located high on the firewall that continues to the left hand side of the engine. The lower hose drops down from its connection, disappearing beneath the exhaust manifold in the direction of the right hand side of the engine. I found that the only way to access it was from beneath the car. By removing the engine starter there is just enough room to reach the hose at its connection point on the engine block behind the motor mount. Good Luck!
OK the heater is not letting the heat into the cab of my truck-I think the switch that controls the deflection doors is broken what is my answer the best thing to do.
Heater core is located inside the H/AC "suitcase". It can be a chore, but you're best bet is to remove the 'suitcase' and remove the heater core once the suitcase is on the ground.
You do not repair the relay. It will be best to replace them with know good ones.
Take it to Best Buy
Rebuild. While the thing is taken apart it might as well be best to replace all seals.
Your best bet it to simple replace it... they are under $20, and they are really easy to do..
Best to get the shop manual but basically: Reomove Heater hoses from engine block and drain. Remove glove box. Disconnect cables that connect to heater core. Disconnect heater core from firewall. Disconnect hoses from heater core. Pull heater core from under dash.
The heat exchanger is the most expensive part to replace in your heater. The recommended thing to do would be contact a professional and have it installed. Maintaining proper water chemistry is the key to not having to replace it again. I have seen them be ruined in less that a week due to improper balance. Find your owner's manual that came with the heater and they give explicit advice on taking care of your pool heater.
You could if you had 1992, 1993 or 1994. 165/80/13 will be your best bet.
It would be best if you get the repair manual for this vehicle since there are 54 steps that would take to long to type and your local library should have it plus this jobs book time pays 7.5 hours to replace the heater core...
its not that hard but if someone asks how to replace something than the best thing for you to do is take it to a shop. it would be alot easyer and head ache free.
You will need to replace the quick disconnect fitting and it is best to use a steel one.