No Heating?

[Guest daddycool]

Hi there

 

I have a problem with the heating in my Gal. Its a 95 2l ghia.

When turning on the heating in the car it takes ages for it to get warm, half hour of driving then the air is room temp. We were driving for 2.5 hours the other day and when we got home, the end od our road i noticed that the car was getting warm. Defeats the object really.

 

Any ideas?

 

Many thanks

Mark :D

[Guest MATT]

is it a tdi or a petrol?

[johnb80]

So you really are daddycool or daddyfrozen at the minute :D

 

Does the engine get to it's normal running temp i.e. somewhere around half way on the temp guage ? If it does then you need to check for air locks to the heater matrix, blocked filters (if fitted) mixing flaps etc. My Gal is a diesel which doesn't have much in the way of waste heat but you can almost burn your feet with the heater.

 

Regards - John

[Guest daddycool]

hi

 

Its a 2l petrol.

The temp gauge shows the engine is still cold, however, if im on my own and i boot it :D for a while the temp stays the same, it only ever gets near the middle in summer when the engine is idling in traffic.

mixing flap is okay i think as when you press the switch you can hear a definate movement of the flap. :D

 

Many thanks

Mark

[marinabrid]

me would try a new thermostat.

[johnb80]

me too for sure, I bet you'll save petrol as well.

[Guest daddycool]

How does the thermostat save me fuel?

 

mark :D

[Goofygolfer]

:D warms the engine up quicker

[Ivor_E_Tower]

...because if the thermostat has "gone" engine is running cool, so ECU richens the mixture because petrol engines need more fuel to run properly when cold - this is one reason why diesels are so much better for mpg on short journeys when the engine does not have time to warm up. Also, internals of petrol engine wear faster when cold, you are ageing your engine unnecessarily.

[Guest daddycool]

Thankyou for all your help guys.

 

Ivor, your post has explained my exessive fuel consumption that the mechanics could not work out and said was normal.

Try and get/fit one tomorrow.

BTW, i was in your neck of the woods today ivor.

 

Many thanks

 

Mark

[Guest vr6galaxy]

...because if the thermostat has "gone" engine is running cool, so ECU richens the mixture because petrol engines need more fuel to run properly when cold - this is one reason why diesels are so much better for mpg on short journeys when the engine does not have time to warm up. Also, internals of petrol engine wear faster when cold, you are ageing your engine unnecessarily.

A tounge in cheek idea to blow your theory of TDI's being better on short journey's.......... isnt the cheap version of a tuneing chip a resistor stuck in the system to con the ECU that the engine is cold and hence it enriches the fuel mix to allow for this? so doesnt that mean when a TDI is cold it runs richer till the operating temp is reached and in doing so burns more fuel? and as it's a well known fact that they run cold and need the aux heater to boost the coolent temp and speed up the warm up period it burns even more fuel! :o

 

Jeez guys how do you ever manage to get these supposedly high MPG figures you bandy around :lol: also with all this cold running short journey's I'm not supprised you worry about using the correct oil to help prevent engine wear ! :lol:

[johnb80]

...because if the thermostat has "gone" engine is running cool, so ECU richens the mixture because petrol engines need more fuel to run properly when cold - this is one reason why diesels are so much better for mpg on short journeys when the engine does not have time to warm up.  Also, internals of petrol engine wear faster when cold, you are ageing your engine unnecessarily.

A tounge in cheek idea to blow your theory of TDI's being better on short journey's.......... isnt the cheap version of a tuneing chip a resistor stuck in the system to con the ECU that the engine is cold and hence it enriches the fuel mix to allow for this? so doesnt that mean when a TDI is cold it runs richer till the operating temp is reached and in doing so burns more fuel? and as it's a well known fact that they run cold and need the aux heater to boost the coolent temp and speed up the warm up period it burns even more fuel! :o

 

Jeez guys how do you ever manage to get these supposedly high MPG figures you bandy around :lol: also with all this cold running short journey's I'm not supprised you worry about using the correct oil to help prevent engine wear ! :lol:

It's very difficult to get a diesel to run rich, the more fuel you pour in the more power the engine develops. The cylinder has a full charge of air every time it's only the fuel content that determines the power until you approach full power, beyond that you then need more turbo boost to get more air then you can pour more fuel in. The resistor tuning mods are subject to much debate, my own personal view is that unless you change the turbo boost control you can do little to modify the real power output, you can move the apparent power further up the pedal but real power can only be gained by more air and more fuel.

The superior diesels are not as choosy as the weakling petrol engines that need exact fuel / air mixtures or they poison everyone and use up all of the earths fuel supply in a millisecond :o

[Guest MATT]

The superior diesels are not as choosy as the weakling petrol engines

100% agree

[Guest MATT]

or they poison everyone and use up all of the earths fuel supply in a millisecond

Don't they use up all the earths supply anyway? :lol:

[johnb80]

Yep.