Question about Cars & Trucks

Open Question

Drained system to fit new rad valve Rads work fine but hot water to cylinder is not circulating.

Loosend off nuts on HWC to purge air got hot water up to that point but when closed went cold still no circulation?

Posted by Anonymous on


6 Suggested Answers

  • 2 Answers

SOURCE: I have freestanding Series 8 dishwasher. Lately during the filling cycle water hammer is occurring. How can this be resolved

A 6ya expert can help you resolve that issue over the phone in a minute or two.
Best thing about this new service is that you are never placed on hold and get to talk to real repairmen in the US.
The service is completely free and covers almost anything you can think of (from cars to computers, handyman, and even drones).
click here to download the app (for users in the US for now) and get all the help you need.
Good luck!

Posted on Jan 02, 2017

  • 1779 Answers

SOURCE: no heat,ch.thermostat,water is circulating,blower goin strong .

Check the 'heater control valve'. This valve opens when u turn on the heat switch on the dash, so the hot coolant will flow thru the heater core and provide heat. So although the coolant is circulating in the engine, the valve controlling the flow to the heater core is stuck closed, or not working.

Posted on Nov 15, 2008

  • 57 Answers

SOURCE: 2003 sable heater not working

Warm up vehicle. Then, from the engine compartment, grip each heater hose to check if they are HOT. Not warm HOT. If they are both hot, then the BLEND DOOR is stuck to the cold position. Access this thru glove box area.

If they are not HOT, then check radiator hoses for proper heat. If radiator hoses are not HOT then thermostat is stuck OPEN.

If they are HOT then there may be a restriction in circulation to the heater hoses and heater core.

Posted on Dec 15, 2008

  • 3 Answers

SOURCE: 04 civic heater blows cold air at idle

you should have hot water on all rad. hoses when the motor is running at a norm. temp. the water is not going through the heater core like it should. you have cutoff valve bad low water are a stopped heater.try a hoter thermostat if none of the above are true.

Posted on Jan 18, 2009

  • 105 Answers

SOURCE: engine running hot. Water in radiator is not circulating

sounds like you need to replace the therostat

Posted on Mar 20, 2009

  • 42 Answers

SOURCE: water is not circulating in radiator. Engine is running hot.

sounds like the thermostat. the thermostat lets the water flow from the block to the top of the radiator.

Posted on Mar 20, 2009

Add Your Answer

Uploading: 0%


Complete. Click "Add" to insert your video. Add



Related Questions:

1 Answer

I have gas central heating, one radiator doesn't get hot, the valves are open, the outlet valve is a Drayton TRV4, any ideas?

Does the non working radiator get warm at bottom of rad?, or do the pipes leading o it get warm?. If this is the case the rad is probably in need of leeding, to blee a radiator look at the ends of the radiator at the top. Older models will have a square protrusion that you need to turn, newer ones tend to have a slotted screw. Undo this until you hear a hissing sound, this is the air coming out, be careful though as the radiator fills back up with water you will need to be ready to close these down. Note the heating is best on when you do this, and combi boilers will need topping up so that the presure is between 1 and 2 atm. Hope this helps.

Oct 29, 2015 | Cars & Trucks

1 Answer

Trying to locate drain plug for antifreeze. Just had work done on my 1998 ford club wagon and need to drain water and add antifreeze.

As far as I know there are no drains in the cooling systems any more. I took the bottom rad hose off and drained my Buick. They say you should not put water in car rads any more.

Nov 03, 2014 | Cars & Trucks

3 Answers

Is car engine ok without thremostat

Have you considered power flushing the block to remove buildup of oxidation which insulates and holds heat? I assume you have replaced the thermostat with no results. There are opinions about operating with not thermostat. Some say it prevents the engine from reaching operating temperature and therefore is running ineffectually and won't meet emissions.

Mar 20, 2014 | 1997 Pontiac Grand Am

2 Answers

Heater just buts out cold air

Any leaks in the system(do you have to add water regularly?)? Check the heater control valve- it allows hot water to circulate through the heater core. Could be bad.

Jan 14, 2013 | 1999 Ford Taurus

3 Answers

Replaced thermostat but still overheating?

Coolant system have bleed points. There is air in your system that needs to be purged out through the purge valves.. There maybe a few. You have to slightly open them when you first fill the system and let the coolant circulate till a little bit of coolant comes from bleed valves then you close them. Letting the system purge air by leaving the radiator cap open is not enough. Are you sure you put the correct temperature thermostat in , and facing the correct way?

Oct 04, 2017 | 1990 Mazda MPV

1 Answer

2007 hyundai santa fe 2.2 crdi.the coolant is filling the expansion tank to the point of overflow.The temp of the car is fine.heater works perfect.there was a new rad fitted about 2 months ago.I bled the...

Hi Mark, I've just had the same problem with my 2007 Sante Fe. After replacing water pump, radiator, thermostat, etc, turns out it was the cylinder head gasket. No water in oil, but engine pressurises the water system, blowing water out the overflow. Cheers

Oct 08, 2011 | 2007 Hyundai Santa Fe Limited

3 Answers

My Toyota Hiace high roof with 3L Diesel Engine heats up. This was after the cylinder head was skimmed and had new valves replaced. Please help me. How can I stop this heating up? Cannon

Your thermostat may be staying closed, if the top coolant hose becomes hot after the engine running for a while, then thermostat is opening ok. Next check to see if the bottom hose going to the rad is getting warm. If its staying cold then you may have a problem with the water pump not circulating the water around the cooling system. If thats ok check the rad cap is sealing ok. when the engine gets up to normal engine temperture remove the reservoir top filling cap which has a rubber pipe going to the thermostat housing. with the engine running there should be no water coming down the pipe and exiting the filler cap. If there is it could be the rad cap not holding pressure which it would need to be replaced or the head gasket is leaking and pressurising the coolant system.. hope this helps you..

Jul 31, 2010 | 1987 Toyota Land Cruiser

2 Answers

Cooling system air valve

there is a velve in the top hose look at the higest hose in the engine bay you will fine a screw or a nut in one of the hoses take the rad cap off and top the rad up fully run the engine up and undo this screw till the water pumps out it should let the air out first, when only water comes out the engine is bled free of air, keep the rad uped up at all times

Jul 22, 2010 | 2007 Chevrolet Impala LS Sedan New Cars

2 Answers

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

Aug 23, 2009 | 1998 Honda Civic

1 Answer

04 civic heater blows cold air at idle

you should have hot water on all rad. hoses when the motor is running at a norm. temp. the water is not going through the heater core like it should. you have cutoff valve bad low water are a stopped heater.try a hoter thermostat if none of the above are true.

Jan 18, 2009 | 2004 Honda Civic

Not finding what you are looking for?
Cars & Trucks Logo

Related Topics:

16 people viewed this question

Ask a Question

Usually answered in minutes!

Top Cars & Trucks Experts


Level 3 Expert

79186 Answers

Colin Stickland
Colin Stickland

Level 3 Expert

22326 Answers

john h

Level 3 Expert

13735 Answers

Are you a Car and Truck Expert? Answer questions, earn points and help others

Answer questions

Manuals & User Guides