I have a 2001 Ford Ranger 4.0 ,4wd. I replaced the 10 amp heater fuse, blower motor relay, blower motor, and three way dash switch. I also swapped around the under the hood relays. Still nothing? I used a test light and it seems there is no power to anything (relays, blower motor, dash switch). Also my air bag light is on. I was told the seat belt relay was bad a month ago, but then I replaced the fuse and the air bag light went out. This happened many times and now the fan is not working at all after replacing all of the parts listed above.
There are a couple of Ranger Forums that may be helpful. I've gone to them in the past and sometimes gleaned helpful info that helped me fix my 2008 Ford Ranger. One of them is ranger-forums.com. Also, there is 1aauto.com. 1aauto sells parts but they also have a "online chat" option where you might find some answers.
I have a 2009 Ford Ranger 2.3 liter 4 cyl 5-speed manual and the temperature control stopped working. The A/C and defrost work fine, but blow only cold air. The vent and heat are lukewarm to lukecool at best. There is no change when the knob is turned to max cold (blue) or max heat (red). Any thoughts on how to fix this problem?
My 94 Ranger has a heater problem that I can not figure out. First off the the temp gauge does the windshield wiper thing, up and down, up and down. To make matters worse, often there is no heat. I have changed the thermostat and that didn't help. The top hose from the radiator does get warm, sometimes the heater hose gets hot. I've flushed the system once already. Any ideas?
Richard from Waterford, CT
You could check for a broken head gasket. Check the oil on the dip stick and see if there is any water mixing with the oil. Or take it to your mechanic and he will check the oil.
Any one have any ideas why my heat will not work and what I mean is sometimes the air will blow and sometimes it won't. It's a Ranger XLT.
I replaced the unit under the hood and the button on dash and the heater still does not work.
By Mike from Diamond Bar, CA
You do not provide the truck make, year, model, etc. so difficult to offer an answer. All brands are different with specific designs and parts. You can search online for the truck brand website and request help from customer service. Or, of course, try a mechanic experienced in repairing your truck type.
My truck heater will only blow cold air. Why?
By Martin S from Reno, NV
Bad Control Module, $5 - part; $100/hour for repair ande there is no guarantee that it will do it again. My solution: I have a 1998 Ford Ranger Truck that the Heater Module Switch went bad. A/C works fine but it doesn't do much good as a defroster. The 12 volt Defroster that are sold are about 12 Watts and don't do anything, don't waste your money.
What I did was buy a 400/800 Peak Watt Inverter (Harbor Freight), an extension cord and a 200 Watt Lashko Heater (War-Mart), total cost $60. Hook Inverter cables to battery posts, secure Inverter with zip ties away from engine heat, zip tie extension cord so it doesn't get caught in moving parts, run cord into cab is easiest and hook up Heater. I place the heater on the dash on a rubber mat so it doesn't slide (Velcro will work too) and turn on the heater and use the blower on low to distribute the heat. It dried up the moisture and defrosted my windshield just fine. My girl friend placed it on the floor boards and heated up the cab in no time. It was made to handle a office cubicle so a truck cab is no problem. There is no tip over switch on the heater so care must be used. It's only 200 Watts and the Inverter handled it with no problem. When I shut down, I shut off the Inverter so it doesn't drain my battery. Only problem it scrambles the AM radio signals but not FM, I can live with that when its freezing C-O-L-D. You get instant heat without having to wait for engine to warm up.
I own a 2005 Ford ranger. How do I tell which is screwed up, the temp control switch or the blend door actuator?
Have you checked the fuses? Mine are on the firewall on the driver's side. Easy to access.
I have a 2009 Ford F-150. My heater does not blow hot air when the heater is on. The blower is working fine. Air comes out both sides. The driver side is just a little warmer than the passenger side.
By Allen B.
You might be able to get an answer at this site:
My 2004 Ford Ranger heating doesn't work. The coil does not leak. I have opened and closes the damper door manually. I have opened and closed the bypass valve under the hood, at different times while opening and closing the damper door. It still doesn't work. Any suggestions?
By firedog658 from Cleveland, GA
I think this is a question for your mechanic?
I have a '97 Ford Ranger truck. The blower works on high, but doesn't blow heat. The a/c works fine. I replaced the thermostat; that didn't work. Any ideas would be a help. Thank you.
It sounds like your heater core is clogged.. It's usually very expensive and time consuming to repair a clogged heater core. It usually involves taking your dashboard off on the passenger side to get to the core... I would recommend getting a flush kit from your auto parts store (I usually get two) and where the hoses go to the heater core in the engine compartment, hook the flush kit up to both hoses coming from the heater core and flush it in both directions.
I usually try to hook my hose up to hot water to help break any gunk loose. You might also try pouring some coolant flush in prior and let sit to break up any gunk before flushing.
How do I back flush a heater core for 99 Ford Ranger? Can I do damage, if I do it wrong?
By Mike H. from Boston, MA
What I normally do is buy two flush kits that you can normally get at walmart or you auto parts store. I hook the "T" connector to both hoses going to the heater core in the engine compartment. I personally try to hook my Jose up to a hot water source, I also like to pour coolant flush into the core prior to flushing to help break up any gunk.
Also you want to punch off the hose on opposite side of "T" connector to force the water towards the heater core and not the toward the engine as this can mess up the thermostat and make sure that the second hose coming from core can dump into a container and is not attached towards motor or the gunk that will break free can go into motor and cause damage.
I've done this a hundred times and have saved tons of money from having to replace heater core. Total cost with new antifreeze and two flush kits should be around $30 rather than $400 for new heater core and $1500 for labor. It's definitely worth doing. You can also find videos YouTube and other sources (some prefer to use compressed air rather than water).
The only time you really need to replace heater core, is if it is leaking which in this case, your passenger side floor will most likely be wet).
My 1993 Ranger won't heat up. I've put in 3 different thermometers, drained and flushed the radiator, new heater core, new temperature sending unit and still no heat. The temperature gauge won't rise above the "C" and the heater blows cold air. Any suggestions?
By TG from Mcdonough, GA
Most vehicles have some sort of valve in the heater hose to allow water to pass through the heater core , it can be not working. Then there is the mixing door for the heater and AC. It could be stuck in the AC position (either works by vacuum or electric). It also could be the controls in the dash.
The block won't even heat up. I replaced the thermostat today and the old one was in pieces so I thought that was it but it still won't heat up. Any advice?
My 1996 Ford Ranger heater will not blow hot air. Any suggestions?