Question about 2002 Honda Odyssey

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My 2002 Honda Odyssey is not blowing heat. First, i got the Mixer motor (genuine Honda part from dealership) replaced as they told me that it was not allowing me to control the temperature. It still wasn't working right. Now, it would start up and act like its getting hot, but not ever get very warm. The mechanic said while he was working on it, he noticed that the antifreeze overflow was empty. So, he told me to fill the overflow up and see if it stayed in, or if I had to refill it again, and if so, how soon did I have to refill it. So I filled the antifreeze overflow up, and had to refill it after driving around for a little while. When I called him back, I told him that the overflow was empty again, even after just refilling, and that also the car still was not heating. He said that it was probably because there were air pockets in the system because of me filling the antifreeze and not taking the radiator cap off will doing it. He said to let the car run, with the cap off, and I would see the antifreeze start to bubble and that would mean that the air was getting out the system. He said pour the antifreeze in the overflow while this was happening. He said this would probably fix the issue of the heat. But, the antifreeze not staying in the car is something that needs to be addressed. Needless to say, the car is still not heating, and the antifreeze won't stay in the vehicle. On a side note, I have never replaced the water pump and timing belt. I bought the van with 60,000 miles on it, and it now has 170,000 miles. Could the water pump be the cause of my problems? Could the antifreeze not staying in the car be the reason why the air won't heat? It seems like if I'm driving and pushing the gas, the air gets somewhat warm. Please help. Thanks.

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6 Suggested Answers

6ya6ya
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Posted on Jan 02, 2017

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MobyMech
  • 106 Answers

SOURCE: 95 Honda Passport running very poorly

Hi

There is a very good chance that driving your car with no coolant has caused at the very least a head gasket issue, if nothing worse (warped head or block etc...)

If there is an air lock in the cooling system and it sits around the coolant sensor then the gauge will register a low temperature because the air lock is not as hot as the actual coolant.

You need to get an independant report on the damage and then present it to the mechanic who carried out the initial belt and pump replacement, because the cost of the repair is down to him, be it a new head gasket or a replacement engine.

Very best regards

Geordie

Posted on Jun 17, 2008

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plopit40
  • 16 Answers

SOURCE: temperature gauge indicates overheating, but engine not overheating, coolant being push into reservoir.

hi my name is brad i see you are haveing a problem and i think i might know the problem. if you have done all of that to your car and it still over heating you might have a blown head gasket one way to check is to pull your thermostat out and fill your coolant leaving the cap off then start you car let it rrun a few minutes and if you see bubbles the radiator its the head gasket even though you wont have coolant in your oil or out the tail pipe. if you check that and ther is no bubbles i have one other spot for you to check ( dont know if you have the 1.5 or 1.6 sohc ) but if you have the 1.6 sohc with the mpfi you should check on the throttle body at the idle air control valve(IAC) you will see two small line`s that have coolant some times on hondas with high millage the line will fill with crud and that can cause a problem.. if you have any other honda needs please let me know

Brad Ross

Posted on Nov 15, 2008

  • 496 Answers

SOURCE: Left side driver heating not working

Its possible you have an air mix control motor malfunction or a mode control motor malfunction. To retrieve your trouble codes from the heater control panel do the following. 1. turn the ignition switch on. 2. Turn the fan switch off. 3. Press the recirc control button to select fresh, then continue to hold the button until the recirc indicator comes on for 2 seconds and then goes off. If the system is okay, the recirc indicator will stay off. If there is a problem, the recirc indicator will blink a trouble code. The codes are one blink=air mix motor/circuit problem. 2 blinks=mode control motor/circuit problem. 3 blinks=evaporator temp sensor circuit problem. Mice can and do get into cars and make nests in the air conditioning systems and cause blockages so the dealer was not making up a fairy tale. That is also a possibility but you would probably smell some bad odors if that were the case.

Posted on Feb 05, 2009

  • 491 Answers

SOURCE: 1994 Honda Civic LX\overheating within 2 mile drive

Remove and raise upper hose at thermostat end and remove lower rad hose.
Fill rad with a hose and watch for flow from bottom rad hose and/ or bottom rad hose connecton.......water should fall though rad easily.
Honda rads are cheap.....any restriction....replace rad.

Remove thermostat....fill thermostat housing with hose and watch for water flow at bottom rad hose.
Flush good.

Remove heater hoses.......flush back and forth until a good flow is present "With heater control set to hot" if no or poor flow....replace heater core.

Stop leak can plug everything.

Also.......not likely causing over heating....but ....at your mileage,if you do not know if the timing belt has been changed.....CHANGE IT NOW!
Water pump is optional at this mileage.

Posted on Aug 24, 2009

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morse008
  • 1111 Answers

SOURCE: 2005 honda civic radiator fills the overflow

Always remember and I "Stress" although its "New" don't mean it comes without "Defects"

However if fluid is going into the reserve tank it would indicate a need to replace the cap although sounds as if all the bases were covered along the way , but could be a faulty thermostat , and you from time to time watch the temperature gauge and its normal level correct ?

i would after a good few hours or even overnight allow the vehicle to cool and then 1st thing open the hood and remove the radiator cap , ensure the radiator is full and leaving the cap off put a piece of cardboard under the vehicle this will allow you to see if coolant is leaking anyplace else ...start the vehicle and after a few minutes it should begin to exchange and you will notice the exchange of fluid replace the cap unless it drops considerably then add fluid so keep it open and nearby , reconnect the cap and always watch out for moving parts and "Never " wear loose articles of clothing and keep you hands etc away from moving parts ..{just a reminder} and note as to when the fan"s engage .at this point look at your temperature readout is it normal range ...watch the reserve for fluid filling it
up .
as well look under the vehicle and watch for any leaks onto the cardboard !

if all else fails at this point take it to a parts store that will have a code reader ...it simply plugs into your vehicle and without starting it turn the key to the on position and allow it to communicate with your vehicle any codes or faults will appear and should be wrote down any and all of them ...they may tell you exactly what the codes read and if applicable you can purchase any parts needed at that point ..

however to me i am leaning towards improper fluid temperature settings and as well a faulty "Thermostat"..turn on all your heat switches and fan to full with the engine running are both hoses going into the heater core going into the firewall hot / if the top is hot and the bottom is cold then it suggests the heater-core is plugged and requires a flush if both are hot then the water pump is working "

if you have a bery high abnormal reading on the temperature gage and everything is normal otherwise it could be a faulty temperature plug

ensure any and all wires are not touching the engine block causing the Gage to ground out giving a false reading

but this is where i would begin hope it helps you somewhat

Posted on Jan 06, 2010

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