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Vauxhall astra 1.7 td heater not getting hot

Cooling sestem back flushe new stat fitted pies to heater matrix one hot other cool

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Assuming the fan works ok, it sounds like the cable from hand control to heater valve has come off or needs adjusting or replacing. Or (less likely) there is a problem with the mechanical valve. The valve needs to open to allow hot water to flow through to the mini radiator (heater radiator) and then both coolant pipes and mini radiator get hot with a warm engine. Try moving the valve lever by hand (somewhere above the clutch pedal).and If you start getting heat with the fan on the fault is the cable..

Posted on Dec 19, 2013

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Posted on Jan 02, 2017

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Richie_asg1
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SOURCE: astravan cooling fan problems

Hi there,

When cold, remove plug of the temperature sensor usually found at the top of the radiator (but may be on thermostat area)

Check sensor with a meter - should be normally open (non conducting)

If faulty, fit a replacement. (undo cap of coolant system, then retighten, undo and replace sensor quickly to avoid too much coolant loss, then top up system.) You can drain the system, but sometimes causes airlocks and more problems.

Posted on Jun 13, 2008

  • 11 Answers

SOURCE: heater problem / engine over heating 5.7 hemi 2004

Test for blown head gaskets, combustion gases can be tested at the radiator neck with engine running

Posted on Mar 11, 2009

j_del
  • 1586 Answers

SOURCE: BOTTOM RAD HOSE COLD TOP HOT. ENGINE TEMP ABOUT

Did you burp the air out of the system after changing those parts? It sounds like the thermostat isn't opening which is why the lower hose is still cold. Click my screenname, go to my tips and tricks, and choose the one about burping the cooling system - it may help you out.

Posted on Jan 28, 2010

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I have Opel Astra 1996 F.Engine code C14NZ.


Vauxhall/Opel range usually had a single pin coolant temp sensor in the top of the intake manifold and removing it while filling the cooling system allowed the majority of the air to escape, but it had to be refitted quickly as soon as coolant appears.

It does have a radiator cap, except it is to be found on the degassing tank (clear plastic bottle with either yellow or black screw cap) and not directly on the radiator.

Once the system is filled and the majority of the air expelled through the temp sensor hole it should be run until hot with the pressure cap fitted and bleeding will be complete shortly after the thermostat opens - except for the heater.

Mostly the above is sufficient but sometimes just enough air will remain trapped in the heater to cause gurgling noises. What is needed is a vacuum cooling system filler that sucks out all the air from the cooling system and then atmospheric pressure forces the coolant into the system.

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Recently had a new water pump fitted to my jeep Cherokee but it's still overheating and the heater in the car doesn't work. Any idea what might be causing this


if no leaks in hoses, then flush out the radiator etc, there maybe a plug up in system. also change thermostat. God-Bless! and hope this helps you.

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1 Answer

Has very little heat has new thermostat!


Was the heater working ok before you fitted the new thermostat?
If no, you probably have a blocked heater matrix. That means you have to either try flushing the coolant system to remove the blockage .. or.. replace the heater matrix, which isn't an easy task.

If the heater was working ok before you changed the thermostat then it's likely you still have air in the system.

Set the heater controls to hot, remove the radiator cap/coolant bottle cap and start the engine. Let it tickover and warm up. Hopefully any trapped air will be purged from the cooling system.

Are you sure that the thermostat is okay? Thermostats have a small valve in that allows air to pass through. If your thermostat is mounted like a clock ..i.e .. the face looking out - the air valve must be at the top.



very-little-heat-new-thermostat-ahrx0qfsie03zk2o1xektuii-4-0.jpeg

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1 Answer

Vauxhall Astra 1.7 petrol over heating had new pump fitted still over heating thermo stat working any ideas


Is thermostat fitted the correct way, If coil sensor is mounted on radiator side it will only see temperature in radiator and block off flow from engine.

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2005 pontiac grand prix no heat until i rev it up and down in park if i dont keep doing this it goes back to cool if i drive it no heat doesnt overhat and i have bled the system several times and...


Could be a clogged heater-core, or it could be a bad thermostat. Waterpumps hardly ever fail, unless it is leaking. The pump mechanism is direct-drive, so if it is turning, it is working...
Try checking the thermostat in a pan of water, on the stove, with a thermometer to see when (IF) it opens. If it's NOT the thermostat try flushing the heater-core (buy a kit and use a garden hose).

Feb 28, 2014 | Cars & Trucks

1 Answer

Heater not getting hot


You need to check the car t cold start up by checking both the lower and upper radiator hoses. After a few minutes one should be hotter than the other. If not the themostat may be stuck open. also chech to ee if there is heater contro valve from the engine to one of the hoses going to the heater core and see if it actuates by moving the temperature control from cold to warm.

Dec 15, 2013 | Cars & Trucks

1 Answer

Rad hot top to bottom new stat fitted pies into heater matrix one hot other cool rad back flushed and heater mattrix


Be sure that cooling system has been bled properly after . Start engine while cold with cap off, and heater on. Let engine get up to normal operating temperature and allow thermostat to open and close 2 or 3 times and rev engine slightly once in a while for 5 seconds or so to help improve flow. If you have rad where you can actually look in and see flow, that's better otherwise watch coolant return bottle and temperature gauge. Feel if any difference at heater as you bleed air out. Once you start to feel better /good heat, then it should be bled properly, then top up coolant return bottle and re-install cap properly. Let me know if that helps.

Nov 25, 2013 | 1999 Dodge Ram

1 Answer

Vauxhall corsa problems


You will probably need to have the air lock removed from the cooling system. Have a radiator shop do this for you.

Oct 30, 2013 | Cars & Trucks

1 Answer

Have a 2000 chevy cavalier. new water pump, new t-stat, new head gasket , new coolant, still running hot


Two ideas.

1. Try a new radiator reservoir cap (trust me, it is very important in holding pressure which keeps the coolant from boiling out).

2. This one you will need an entire weekend to spend on this. You need to remove the thermostat and replace the thermostat housing. pull one of the radiator hoses and attach a garden hose with good pressure. It needs to flush for at least 20 minutes. Then switch directions and flush water where was coming out. Then put it back together and drive until it gets hot. Allow it to cool for 45mins (to prevent engine from cracking due to rapid cooling) and repeat until no crud comes out when flushing.

May 30, 2011 | 2000 Chevrolet Cavalier

1 Answer

Will a 2.5 td fit into my astravan 2004 1.7 tdi


Forget it to costly, a BMW is a in line 6, the Astra has aV 6 engine.

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