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Honda thermostat fixed + how to test your thermostat...
See my original message below:
So after taking the car into the dealer for a total of seven times (3 of which were to have them flush the radiator because they couldn't seem to remember to fill the reservoir tank...), I finally got fed up with the lack of service from my dealer and called Honda Canada. After explaining the problem, they called the dealer on my behalf. The dealer ordered a new thermostat, and installed it when it arrived. My car heats up fine now. Even at -30. The service manager said it must have been 'selectively sticking'. (Probably just when the engine was running). FYI: From what I can tell, there is only one temperature of thermostat available for the 06+ generation civic at this point, (set at 170 degrees) I've called jobber shops and most don't even stock the part because its a new style. (They usually start making parts once the warranties are up). Canadian tire carries the right thermostat. If you get a chance to order a hotter thermostat (190 degrees), they work great- very nice investment for the wintertime. You will however notice a small drop in fuel economy and performance. My advice: If your car reaches normal temperature and then the temperature drops during long downhills or when your heater is on full- then your thermostat is shot. My test was the 'two mile hill' test. Once the engine is at full temperature, drop the car in neutral at the top of a large hill (keep the load on the engine minimal), turn the heater on full and watch the temperature gauge. You shouldn't notice the temperature drop. The thermostat is there to keep your engine at proper temperature- that's it's only purpose. Once the coolant temperature starts dropping, the thermostat closes to keep the engine at proper temp. If your temperature drops, then the thermostat is stuck open. The only way to know for sure what is going on is to remove the thermostat. The factory service manual describes removing the thermostat, place it in a pot of water with a thermometer, and heat it up. (suspend the thermostat/thermometer off the bottom of the pot). The thermostat should be closed initially, and start opening at about 155 or 160, fully open at 170 and visa-versa. Part of my frustration was because every time I brought the car in, I'd ask what they did. They refused to pull the thermostat just to test it- even though it says to do so in the dealers' service manual. If they aren't doing that- what are they doing? If your dealer isn't honoring your warranty, call Honda Canada. It worked for me. Other than that, I've resolved to sell my car. I've owned honda's all my life and they've been great- but right now I'm worried that if something serious happens, I'll be left in the cold (... yeah I know). At least I won't be buying a new car without a warranty. Corry (OLD Message Below) > Yes, > I'm having the exact same problem. I've taken my car in four times > this fall and still haveproblemsreaching temperature. I'm 95% sure > the problem is thethermostat. Every time I ask them to check thethermostat, and they haven't removed thethermostatonce (which is the > recommended method in the dealer service manual). My old Acura Integra > (also an aluminum 1.8L) had the same problem once, I replaced thethermostatand she was fine. > My problem is with the dealer here in Whitehorse- they keep telling me > not to run the heater at full, or that 'these little engines don't > produce as much heat'. It doesn't make sense. If the engine is at > temperature, thethermostatshould open and close to keep it at > temperature. I'm paying them to replace thethermostatat my cost, > and save the parts for me. (If I get an openthermostatback I'll be > getting unglued). Thethermostatshould be in this week, I'll let you > know how it goes. > I'm sure you've noticed your gas consumption increase as well- I'm > getting about 250km to a tank right now, just slightly better than my > friends Land Rover. You may have also noticed the temperature drop on > long downhill roads... I can usually drop the temp from 1/2 to 1/6 on > a good hill. > FYI: I've installed some cardboard in front of the bumper, at least > now it reaches temperature when I'm on the highway... I'll keep you > posted. > Corry Forgot to mention that I drive an 07 Civic. This is its first cold winter, so I'm only noticing the problem now. C |
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Honda thermostat fixed + how to test your thermostat...
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#4
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Honda thermostat fixed + how to test your thermostat...
Tegger ) writes:
> wrote in > : > >> See my original message below: >> >> So after taking the car into the dealer for a total of seven times (3 >> of which were to have them flush the radiator because they couldn't >> seem to remember to fill the reservoir tank...), I finally got fed up >> with the lack of service from my dealer and called Honda Canada. >> >> After explaining the problem, they called the dealer on my behalf. >> The dealer ordered a new thermostat, and installed it when it >> arrived. My car heats up fine now. Even at -30. The service manager >> said it must have been 'selectively sticking'. (Probably just when >> the engine was running). > > > > > Like I've said all along: There's surely a TSB coming soon. > > > >> >> FYI: From what I can tell, there is only one temperature of >> thermostat available for the 06+ generation civic at this point, > > > > No Honda has an "optional" OEM thermostat. The cooling system works just > fine with the single one that's specified. > From the 1986 Canadian Honda Accord Shop Manual (First Edition 9/85) Honda No.'s 62SE300C and (SM)C3408706G Page 10-7 STANDARD THERMOSTAT Lift height: 8 mm (0.31 in.) Starts opening: Primary: 82 Deg. C plus or minus 2 (180F + or - 3) Secondary: 85 C + or- 2 (185F + or - 3) Fully open: 95 C (203F) OPTIONAL THERMOSTAT Lift height: 8 mm (0.32 in.) Starts opening: 86--90 Deg C (187--194F) Fully open: 100 C (212F) Happy St. Paddy's (Mar.17) > > >> (set >> at 170 degrees) I've called jobber shops and most don't even stock the >> part because its a new style. > > > > > That's interesting. I wonder what's the difference between old and new? > > > > >> (They usually start making parts once >> the warranties are up). Canadian tire carries the right thermostat. >> If you get a chance to order a hotter thermostat (190 degrees), they >> work great- very nice investment for the wintertime. You will however >> notice a small drop in fuel economy and performance. > > > > Bad idea. Never install a hotter thermostat than what was specified for > your car. > > Your car is meant to take a thermostat that says "78C" on it, which > translates to 170F. That's the temperature at which it starts to open. A > 170 is fully open at 90C, or 194F. > > A thermostat that says 90C or 194F on it will be fully open at about > 215. WAY too hot. > > > -- > Tegger > > The Unofficial Honda/Acura FAQ > www.tegger.com/hondafaq/ |
#5
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Honda thermostat fixed + how to test your thermostat...
(M.A. Stewart) wrote in
: > Tegger ) writes: >> >> No Honda has an "optional" OEM thermostat. The cooling system works >> just fine with the single one that's specified. >> > > > From the 1986 Canadian Honda Accord Shop Manual (First Edition 9/85) > Honda No.'s 62SE300C and (SM)C3408706G > > Page 10-7 > > STANDARD THERMOSTAT > Lift height: 8 mm (0.31 in.) > Starts opening: Primary: 82 Deg. C plus or minus 2 (180F + or - 3) > Secondary: 85 C + or- 2 (185F + or - 3) > Fully open: 95 C (203F) > > OPTIONAL THERMOSTAT > Lift height: 8 mm (0.32 in.) > Starts opening: 86--90 Deg C (187--194F) > Fully open: 100 C (212F) > Well, if you want to go THAT far back... Let me a bit more precise, then: No Honda made _after 1989_ had an "optional" thermostat. None of my numerous Honda shop manuals list any optional thermostat. Except the one for the '86-'89 Accord. Certainly, however, the OP's '07 Civic takes only one specified thermostat rating, so your point is moot. > > Happy St. Paddy's (Mar.17) > I'd be happier if St. Paddy's was on the weekend. It's tough getting hammered when you have to go to work the next day. -- Tegger The Unofficial Honda/Acura FAQ www.tegger.com/hondafaq/ |
#6
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Honda thermostat fixed + how to test your thermostat...
M.A. Stewart wrote:
> Tegger ) writes: >> wrote in >> : >> >>> See my original message below: >>> >>> So after taking the car into the dealer for a total of seven times (3 >>> of which were to have them flush the radiator because they couldn't >>> seem to remember to fill the reservoir tank...), I finally got fed up >>> with the lack of service from my dealer and called Honda Canada. >>> >>> After explaining the problem, they called the dealer on my behalf. >>> The dealer ordered a new thermostat, and installed it when it >>> arrived. My car heats up fine now. Even at -30. The service manager >>> said it must have been 'selectively sticking'. (Probably just when >>> the engine was running). >> >> >> >> Like I've said all along: There's surely a TSB coming soon. >> >> >> >>> FYI: From what I can tell, there is only one temperature of >>> thermostat available for the 06+ generation civic at this point, >> >> >> No Honda has an "optional" OEM thermostat. The cooling system works just >> fine with the single one that's specified. >> > > > From the 1986 Canadian Honda Accord Shop Manual (First Edition 9/85) > Honda No.'s 62SE300C and (SM)C3408706G > > Page 10-7 > > STANDARD THERMOSTAT > Lift height: 8 mm (0.31 in.) > Starts opening: Primary: 82 Deg. C plus or minus 2 (180F + or - 3) > Secondary: 85 C + or- 2 (185F + or - 3) > Fully open: 95 C (203F) > > OPTIONAL THERMOSTAT > Lift height: 8 mm (0.32 in.) > Starts opening: 86--90 Deg C (187--194F) > Fully open: 100 C (212F) > that's a carburetted vehicle though. fuel injection vehicles are very particular on coolant temperature being correctly maintained. that's why defects like sensor drift or thermostat drift have such significant consequences. > > Happy St. Paddy's (Mar.17) > > > >> >>> (set >>> at 170 degrees) I've called jobber shops and most don't even stock the >>> part because its a new style. >> >> >> >> That's interesting. I wonder what's the difference between old and new? >> >> >> >> >>> (They usually start making parts once >>> the warranties are up). Canadian tire carries the right thermostat. >>> If you get a chance to order a hotter thermostat (190 degrees), they >>> work great- very nice investment for the wintertime. You will however >>> notice a small drop in fuel economy and performance. >> >> >> Bad idea. Never install a hotter thermostat than what was specified for >> your car. >> >> Your car is meant to take a thermostat that says "78C" on it, which >> translates to 170F. That's the temperature at which it starts to open. A >> 170 is fully open at 90C, or 194F. >> >> A thermostat that says 90C or 194F on it will be fully open at about >> 215. WAY too hot. >> >> >> -- >> Tegger >> >> The Unofficial Honda/Acura FAQ >> www.tegger.com/hondafaq/ > > |
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