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Car Forum / Honda Cars / January 20072003 Honda Civic Heater Not Working Properly
The heater in my 2003 Honda Civic only heats up after continuous driving for 15+ minutes. Additionally, even after highway driving for 2+ hours, the heater sometimes blows cold air when I slow down and do city driving. Any ideas?  SignaturePosted at author's request, using http://www.AutoBoardz.com interface Articles individually verified to usenet standards. Visit URL to contact author/report abuse Thread archive: http://www.AutoBoardz.com/2003-Civic-Heater-Working-Properly-Honda-ftopict202173.html > The heater in my 2003 Honda Civic only heats up after continuous > driving for 15+ minutes. Additionally, even after highway driving for > 2+ hours, the heater sometimes blows cold air when I slow down and do > city driving. > > Any ideas? when did you last check the coolant level in the radiator? it needs to be full to the top. the expansion bottle needs to be to the "max" mark too. >> The heater in my 2003 Honda Civic only heats up after continuous >> driving for 15+ minutes. Additionally, even after highway driving for [quoted text clipped - 5 lines] > when did you last check the coolant level in the radiator? it needs to be > full to the top. the expansion bottle needs to be to the "max" mark too. Well, to the "max" mark when fully warm. That's why it's an 'expansion bottle.' ;-) Mike >>> The heater in my 2003 Honda Civic only heats up after continuous >>> driving for 15+ minutes. Additionally, even after highway driving for [quoted text clipped - 10 lines] > > Mike no, it needs to be at "max" when cold. that line is less than half way down the bottle. the /rest/ of the bottle is for expansion. do you keep your oil at the bottom line or the top? Coolant level in expansion bottle is at max when cold. I already checked that. Oil level is between the top and bottom lines. Oil has been completely changed since the problem was first encountered and no difference. I’m beginning to think its an electrical problem or possibly the thermostat > Michael Pardee wrote: > >>> The heater in my 2003 Honda Civic only heats up after [quoted text clipped - 23 lines] > > do you keep your oil at the bottom line or the top? SignaturePosted at author's request, using http://www.AutoBoardz.com interface Articles individually verified to usenet standards. Visit URL to contact author/report abuse Thread archive: http://www.AutoBoardz.com/2003-Civic-Heater-Working-Properly-Honda-ftopict202173.html mikebuckle <none@000.com> wrote in news:958500_ 3277fdfe439f5759e31cf59239eaadb4@autoboardz.com: > Coolant level in expansion bottle is at max when cold. I already > checked that. Oil level is between the top and bottom lines. Oil has [quoted text clipped - 3 lines] > I’m beginning to think its an electrical problem or possibly the > thermostat? Then it's the thermostat. SignatureTegger The Unofficial Honda/Acura FAQ www.tegger.com/hondafaq/ mikebuckle <none@000.com> wrote in news:958315_ 1397ed5493ce3b93e32b31362b7b8c85@autoboardz.com: > The heater in my 2003 Honda Civic only heats up after continuous > driving for 15+ minutes. Additionally, even after highway driving for > 2+ hours, the heater sometimes blows cold air when I slow down and do > city driving. > > Any ideas? Most likely the coolant level is very low in the radiator. As others have pointed out, check this first. Driving with low coolant level will damage the engine. DO NOT rely on the reservoir level as a judge of coolant level! Check it in the rad once the engine is cold. It should be right up to the bottom of the rad cap; that rad cap should be dripping wet. SignatureTegger The Unofficial Honda/Acura FAQ www.tegger.com/hondafaq/ > The heater in my 2003 Honda Civic only heats up after continuous > driving for 15+ minutes. Additionally, even after highway driving for > 2+ hours, the heater sometimes blows cold air when I slow down and do > city driving. My sister had that in her Prelude. It turned out to be a stuck open thermostat. Bruce. |
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