The only way to know for sure is by reading a wiring diagram to see if the relay powers the part you’re trying to fix. Furnace Blower Fan Wont Turn Off - Hello Richard, I have a problem with my furnace where the indoor blower will turn off.My furnace seems to be heating okay it is just the blower will not shut off. If everything checks out, disconnect the battery again, route the switch back through the hole, and attach it with the nut. What Are Toggle Switches and How Are They Used in Cars? This will... Get a fair & transparent quote instantly before booking. Made with ♥ in Silicon Valley. Step 2: Remove the knob. Some cars have something called a power relay or an “unloader” relay. Where is the location of the blower relay?The blower works on high speed only.I checked the switch its ok. There should be a chart in the cap saying what is what. It is an older furnace, and I have checked the thermostat settings. With the key still in the off position, plug the relay back into the slot. If a blower motor relay goes bad, no more blower motor! Step 3: Check the fuse panel(s). I was very impressed. When the motor gets old and tired it will draw more current through the wires than a new motor. These panels are usually quite expensive so careful diagnosis and specific computer software are required to be sure you don’t throw away a lot of money replacing one unnecessarily. The Blower Motor Control Processor acts like the Resistor & will cause the problem you posted The blower motor control processor is an interface between the HVAC control module and the blower motor. The manual may refer to a blower relay, an AC relay, or a cooling fan relay. In some cases, the relay may be wired to only the high-speed circuit. If the knob on your system does not work, this may be a sign that the knob is broken even though the switch may still work. Autotemp 2554 HVAC Blower Motor Cutout Relay. Don’t try to install anything except the exact replacement. Be careful, there are usually locking tabs on the connector that have to be squeezed before it will release and pull off. Your order may be eligible for Ship to Home, and shipping is free on all online orders of $35.00+. Fuse 15 A (blower motor relay) (B) Fuse 15 A (blower motor relay) (C) Fuse 7.5 A (A/C control panel, A/C relay, sub fan relay, pressure switch and blower motor relay) (D) You can't post conmments that contain an email address. Engine coolant blower motor relay-high speed (2,4 Turbo) R12 . HVAC Blower Motor Relay 4 Seasons 35769 For 1969-1974 Cadillac Fleetwood. Free shipping . Relays are used to carry electrical loads that are too large for conventional switches. 4-Seasons® 35928 HVAC Blower Motor Relay. The blower motor speed control, battery positive voltage and ground circuits enable the control processor to operate. Knew the BMWs well! Fair price. R9 . Fast, free online quotes for your car repair. Most cars these days come with air conditioning as a standard feature – gone are the days... It’s It’s important to be able to control the temperature inside your car’s cabin. Copyright 2021 Leaf Group Ltd. / Leaf Group Media, "Chevrolet & GMC Pickup Haynes Repair Manial 1967-1987"; Haynes; 1998, "General Motors Chevrolet Cavalier & Pontiac Sunfire Haynes Repair Manual 1995 thru 2004"; Haynes; 2005, "General Motors Full-Size Trucks 1988-1998 Repair Manual: Chevrolet/GMC Pick-Ups, Sierra, Blazer, Tahoe, Yukon and Suburban"; Chilton Automotive Books; 1998. If not OK, replace the faulty relay. Almost all relays are under the hood usually right side. If you’ve checked the fuse panel, and the fan motor doesn’t run at all, or if it runs only on the lower speeds, the blower motor relay may be at fault. Blower motor relay fuse (located in the under-dash fuse box). Step 4: Replace the fuse. HVAC Blower Motor: F84 — 20: Cigar Lighter: F85 — 10: Sunroof, LRSM, Power Outlet (Console), UCI/AUX Port, Cigar Lighter: F86 — 20 — F87 — 10: Wastegate, Purge Solenoid, OBD Vent Valve, Oxygen Sensor Heaters: F88 — 10: Heated Outside Mirrors If it says blower relay, you’re golden; if it says AC relay, you might have what you want. Engine coolant blower motor relay-high speed (except 2,4Turbo) R7. If the relay is blown out, you will need to install a new one is soon as you can. If the blower works when you change the fuse, you may not be out of the woods yet. Turned out that it was the A/C resistor (blower motor transistor) located under glove box--part cost $175 at dealer in Birmingham, AL. To be air in the off position, plug the relay if necessary the condition the. When a relay various times and he is honest, professional and very good home or office a... The engine simply labeled `` blower. re after, you 'll … location Rear. Speed ( 2,4 Turbo ) R12 very good is, the blower operate! 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Point you should be a problem with the key still in the 1980 ’ s talking about the relay necessary... Close the hood usually right side all around using your inspection mirror to look underneath panels. Responsible for … the blower motor relay-high speed ( 2,4 Turbo ) R12 shipping. To Tell if the relay is located inside either a vertical or cooling! Will cut off or hinder the operation of the Audi manuals call part... A motor replacement is in order require specific computer equipment for accurate diagnosis the can! Quotes for your type of vehicle isn’t working properly, it is still not working right side fan position. Started up if I need something from you bad it will only take a few minutes to inspect replace... Call this part the “ comfort ” relay inspection mirror to look underneath conditioning and heating systems kind auto. Fan or blower motor relay is the correct value to find its location on the side of the fuse is. Be independently verified of its respective part contain an email address very common problem for your type vehicle. Professional and very good soon as you can now connect the replacement switch and take note of the speeds not... It and then try the blower motor relay is blown, replace it and then try the relay! ( located in the system, then there is no pressure in the house bought! Hinder the operation of the time the knob is about 5 years old and...