Question about 2001 Honda Accord

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Anti freeze not circulating

One of my fans is not working and the other one only works when I turn on the heater. I checked to see if it was the thermostat and found out that it had already been moved. can anyone help.

honda civic vp 1999

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Ok , when you turn on the a/c its normal to work one of fan (condenser), now, when the engine temp is high be work the other fan,if not work ,chek fuse , temp sensor or connection , its normal condition not circulates anti freeze when engine is cold

Posted on Apr 24, 2009

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2003 chevy impala that overheats

It could be a number of things:
a. Radiator partly plugged, check to see if water circulates with engine running and cap off.
b. Thermostat not opening
c. Heater plugged.
d. Anti-freeze low in radiator
You can feel the heater hoses and see if water is circulating or if hoses are hot water is going through them.

May 19, 2017 | Cars & Trucks

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The top hose was leaking on my 1999 plymouth breeze. i flushed the system, changed the thermostat, and top hose, and replaced the anti-freeze. after starting and driving the vehicle, it ran hot. what did...

Start from cold engine and remove cap and refill rad with heater turned on. Keep topping it up and make sure rad fan comes on once or twice to be sure it has circulated good and all air is out of system.

Jul 26, 2011 | Plymouth Breeze Cars & Trucks

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I have a 2001 Jimmy. back in Sept the heat just blew out cold air I took it in and they did a Antifreeze Reverse Flush Heater core and about a month ago it stopped working agian. Its - 28 and Im freezing...

WEll, it is unlikely that the heater core plugged up again, moe likely you are low on coolant. There are also water valves and heater doors that can cause what you describe.

You do need to be makeing enough temperature, check that the thermostat is allowing you to get warm enough.

Mar 02, 2011 | 2001 GMC Jimmy

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Changed water pump & thermostat. Still only blowing cool air. Fan motor blows fine Jeep is in good condition other than this. Someone mentioned using some different antifreeze?

if you were the person that changed the water pump and t'stat this will be more of a 'follow-on'
A word of warning and advice, if you are going to work on the cooling system when it is in operating range, ie hot! Wewar a long sleeved work shirt /coveralls, work gloves and eye protection. If a hose 'blow's" when you are in proximity to it, it will cause injury. if you are caught like that, wash the affected with cool water a.s.a.p. and for a minimum of 15 mins. One, the washing will remove any anti-freeze, (bad for the skin etc) Two, the cool water will reduce the temp and thus the damage to the outer and inner skin formation. Most important to cool the UNDERLYING skin, it will greatly reduce reaction and damage.
Ok, here we go. If you8 have an assistant it will save you some tiome. The engine is warmed up and is at operating temp. Briefly check the top rad hose between thermostat and rad. If it's hot to the touch, the T'stat has opened, if cool to the touch the T'stat has NOT opened. Re'check the T'stat installation.

All is well, rad top and bottom hose are hot, coolant is circulating. Find and follow the heater hose from engine to bulkhead. Sometimes there will be quite a few hoses sharing a common center. Again, check that the inlet hose to the bulkhead and the return line are hot to the touch. This equates to coolant circulating. if inlet is hot and outlet cool, then the coolant is not circulating correctly through the heater box / matrix.

Under the hood, find and trace the vacuum line (s) which run from the engine to the bulkhead and check for leaks, a broken connector or a split hose. The underhood temps cook vacuum lines fairly easily, making them brittle. No problems found? Obtain /rent a hand powered vacuum pump, disconnect the main vacuum feed to the bulkhead, (under hood), attach it to the hand powered vacuum pump and operate the pump. If you have an assistant, have them sit in the vehicle as you operate the pump, WITHOUT the engine running. They should be able to hear the flaps on the airbox open and close. if they cannot hear them operate, there may be a vacuum leak inside the dash from a damaged line T-piece etc. To double check, start the engine, and operate the vacuum hand pump. Ensuring that you have plugged the vacuum source on the engine otherwise you may have poor starting, and a lumpy erratic idle.

Have your assistant operate the heater controls whilst you operate the vacuum pump. If the air flaps operate with the vacuum which you supply, and the heater mode directs hot air to the interior of the vehicle, then you have narrowed the problem down to a faulty vacuum feed at the engine supply.

Anti=Freeze enables the boiling point of the coolant system to be raised, and of course, depending on the mix, prevents the coolant from freezing at low temps. Do not mix the Anti-Freeze more than 50% Glycol and 50% water. Odd thing about anti-freeze, if you increase the glycol content, the engine will start to operate at a higher temp, with the usual problems which come with that situation. Certain Anti-Freeze mixtures have additive's included which are kinder to cooling systems which have a high aluminium content. In any case, after two years continous useage, Anti-Freeze properties start to decline and the coolant system requires draining /re-filling with new Anti-Freeze.

Hope that info is of some help.

Jan 25, 2011 | 1998 Jeep Cherokee

2 Answers

Runs hot and hearter not blowing hot air

a heater uses the temperature of the cars water, running threw a heat exchanger if the heater core has failed water will not circulate threw the engine properly this will and can cause over heating as well as nothing blowing from the heater. good luck.heater cores are generally inexpensive parts to replace.

last thing you can check if heater core is ok. is the thermostat.

Feb 18, 2010 | 1999 Pontiac Montana

1 Answer

I have a 97 Dodge Carvan my heater is blowing cold air and the anti-freeze is leaking and the fan is blowing steady.

if the fan is running as soon as you tuirn the key on,thats the resistor,
no heat will happen if the coolant is low and can't circulate ,you need to fill the radiator and over flow container and fix the leak.

Jan 18, 2010 | 1997 Dodge Caravan

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No heat

My 2005 Nissan Sentra 1.8s with 55,000 mi. blows cold air from the heater. Coolant not circulating in engine. Lower hose stays cool to touch. Both heater hoses cold. Changed thermostat - didn't fix it. Coolant not leaking or dirty. None in oil - no oil in radiator. Changed worn water pump belt - pump spins freely with no noise or resistance. Cooling fans come on after warm-up. Temperature gauge stays in normal range then jumps to hot and back again. Coolant good to 10 below - didn't freeze here yet. No other problems or repairs to car. Afraid to drive and make worse. Help!

Oct 10, 2009 | 2005 Nissan Sentra

1 Answer

My 2002 hyundai sonata, help:)

cold weather won't usually hurt anything in your heater, it will just take longer to warm up the cabin.

the lack of heat is a sign that you're probably not getting the proper circulation in your cooling system, that is, the radiator, anti-feeze/coolant, fan, etc.

bad circulation means your anti-freeze level could be low from a leak, or a hose that popped off. or you could have a bad water pump, which is what circulates the coolant through the engine and radiator, even though we don't use water anymore.

the solution is to have someone who knows how check the thermostat, radiator, coolant level, hoses, and water pump to make sure everything is working.

be sure to address the problem soon, because if it's a coolant system problem, the more your drive, the more damage your engien will suffer.

Dec 29, 2008 | Hyundai Motor 2002 Sonata

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