Question about 2003 Honda Civic

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Heater not blowing out strong air - 2003 Honda Civic

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Is the cabin air filter plugged.

Posted on Nov 09, 2010

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Posted on Jan 02, 2017

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My 1993 Z28 camaro blows strong air but not cold in summer and defrost will not clean the windows. What could be the cause of this problem?


My Camaro's are all victoms of the air flow control vaulve. My 77 had a cable that phyisically opened and shut off air flowfrom the heat and cold side and operated as I moved it from cold to heat. Then they came out with Vacuum assisted air control units that when the rubber vaccum tube dehydraded, it would be stuck in what ever it was in last, say A/C, or if u had the heater on that day. You have either cables or air hoses that open and close certain doors under your dash according to where you place the enviromental control to. 9 times out of 10, that control mechinisim froze up, a plennum door could have broken off leaving that area always open and the heater is always off. Check the book, im not 100% but it may be all electronic in the 93's if so, first check your fuses. Also check the passenger floor board for dampness. If the passenger floor board is wet, then your heater core ruptured also. It's a mini radiator under the pass. side dash. But the real deal is the air vents that open and close according to your input are not moving at all, and if they are electronic well Don't rip the dash out, that is a pain to reinstall LOL, Best bet is to take it to the chevy house because if you get the book, u'll see theres quite a few moving parts and with old plastic and them dehydrating, you can easly brake a door control and make matters worse. Good luck.

Sep 18, 2012 | 1993 Chevrolet Camaro

1 Answer

When i get in my jimmy to go to work its blowing hot air( with the heater on of course) and then there is a creaking noise coming from the blower motor area, then the heater will start blowing cold air...


Because the Main Gear in the Blend Motor has cracked or teeth have chipped and is now not keeping the heat/cold door to the Hot position. 3 fixes: Buy a new Blend motor, takes about 5mins to replace. Buy a new Blend Motor Gear, will take about 30mins to fix. Repair current gear with Epoxy, takes about 30mins and 12hrs for the glue to set up strong enough to use it.

Feb 24, 2011 | 1998 GMC Jimmy

1 Answer

1997 jeep wrangler will not blow hot air from heater,,, i replaced the thermostat ,, heater core isnt leaking, and my heater knobs are working,, it blows somewhat warm air , but doesnt get completely hot,


sounds like either the antifreeze solution is to strong [ shouldn't be more then a 70% mixture ] or the heater core is plugged [ some "stop leak" products will cause this.

Dec 29, 2010 | Jeep Wrangler Cars & Trucks

3 Answers

Truck heats up, leaks water from the muffler, and blows cold air when heater is on


water out the exhaust is normal it means your engine is running strong and cooling correctly. your heater blowing cold air is because your heater failed what you do is turn the fan on and were you here the fan motor turn on the heater core is in that box to find were it is pop the hood and look for the coolant hoses going in to the firewall thats your heater core cap the lines remove the dash open the blower motor box and pull the core out note the way it came out because the lines are supply and return usually one is bigger than the other the bigger is the supply

Feb 15, 2010 | 2003 Ford F150 Regular Cab

1 Answer

Air flow weak when set to heat


check for dirty cab air inlet or "HVAC" filter, or heater core is plugged from debris and air is being restricted and wont blow through. it works like a radiator, air ducts can also be getting stuck.

Jan 06, 2009 | 1983 Toyota Camry

1 Answer

2001 Aztek blowing cold air (strong) on left side of the car.


This is a blend door problem, this door diverts air either throgh the heater core or the AC accumulator core, it either provides hot, cold or a mixture or blend, this door is deep in the dash and in most cases the dash must be removed to service the little electric motor that operated the door.

Nov 20, 2008 | 2002 Pontiac Aztek

1 Answer

Heater keeps blowing hot air for awhile then it blows cold. replaced thermostat and did not fix the problem. was suggested to change heat sensor. need to know where it is located.


if youre driving down the road with decent heat and all of a sudden it gets cooler, and the engine temperature remains normal, i would strongly suggest flushing out the heater core at the firewall in engine compartment, very common problem due to the dex-cool antefreeze used be GM.

Nov 17, 2008 | 1999 Chevrolet Blazer

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