ALFA 147 : Problem low engine temperature , as soon as I turn the hot air!

[demolitionMan]

Hello guys, I'm desperate.
I have the following problem with my 147 1.9 jtdm 150 hp.

machine hot (90 ? engine temperature, as soon as I turn the ricaldamenti, the temperature goes up to 50-60? with tempereatura external 8 ? about! in about 1-2 minutes the temperature drops and in the passenger compartment only gets warm (almost cold)!...

if I have the hot air on and walk into town? the temperature of the engine at every red light falls in the range of 10-15 ? .of course, if I'm stationary with the engine on if I want hot air in the cockpit, I have to accelerate the car up to 2000 rpm so constant !


I changed the thermostat valve 2 times .

up to a month ago, even with the machine stopped, I had the hot temperature and the engine temperature was fixed at 90? even at temperatures + rigid!

Thanks to all of you.

[Chris156]

from the diagnosis you have the same temperatures?

[neo]

Check with the diagnosis of the temperature on the instrument panel and the temperature in the engine control unit, and if they are equal, sure that the thermostatic valve and defective.

[demolitionMan]

Check with the diagnosis of the temperature on the instrument panel and the temperature in the engine control unit, and if they are equal, sure that the thermostatic valve and defective.

diagnosis and all true! even why? when the temperature drops to 60 degrees feels that it is cold in the car! the hand on the picture ? busted! the thermostatic valve I have replaced it 2 times with a marked Vernet and another alfa! everything remains the same!

usually the problem! I open the warm air and the temperature drops! if you do not open the air temperature is fixed at 90?

[dvdtuning]

Do you drink water? maybe you have air in the heating circuit? I also have a 147 but jtd 115 and does a similar job but not when ? 90?, he does this when ? around 60-70 that as soon as I turn on the hot air the temperature drops suddenly!

[michele30]

circulates the water well in the radiators? the entire machine?
from the tube back into the vachetta download good

[neo]

And one thing that is very strana.Doveva be to force the valve termostatica.Controlla if there is not some manigotto reversed

[rondella72]

circulates the water well in the radiators? the entire machine?
from the tube back into the vachetta download good

Anchio contollerei well as circulates the water on the same type of engine to another car I found the water pump vanes broken in the impeller that ? of plastic:)

[demolitionMan]

The water circulates very well, not eating certainly! if it was the pump the car should warm up ! but this is cool! not ? a normal thing! usually all of have the opposite problem! it heats up! but to me it cools!

[demolitionMan]

You will soon pubblicher? a video of how it lowers the temperature when I open the hot air..

[Backgroop]

Replace the thermostat and go quiet, surely ? perfectly calibrated, and opens at low temperatures or when it opens it stays open..

[munro]

from what I read, considering also the thermostat ori seems to have changed 3 in all of these components.....
now..I don't think that all 3 thermostats are faulty.....or don't read the topic??all you do is read the last post in question and write so much to increase the counter of the post???
maaahhhh??!!???

[Tom79]

depends if thermostatic radiator valves included in the thermostat...

[munro]

sorry tom79, because thou in the thermostatic valves of the 147 you can change only the thermostatic valve without replacing the entire thermostat????

[munro]

and anyway since you want to do the picky....thermostat or thermostatic valve shall indicate in the automotive sector is the same component.

[Backgroop]

the problem over to the thermostat could be linked to the pressure switch on the air conditioning not functioning properly, start the fans and, consequently, lower the operating temperature.

[demolitionMan]

the problem over to the thermostat could be linked to the pressure switch on the air conditioning not functioning properly, start the fans and, consequently, lower the operating temperature.


But as a fan you mean the ones of the cooling radiator of the water? well, to me, those don't run ever!.. the thermostat I replaced it 2 times! the valves I try to do open and close to tour, by heating a pot of water, I set the valves (monitoring the temperature of the water)but it seems to work perfectly!. thanks to all for the answers.

[freddyecu]

Try to verify the return of water ( with the car in motion check that the tube and the small one on the bowl water comes out) if not, proceed to the cleaning ... it often happens that it becomes clogged

[demolitionMan]

Try to verify the return of water ( with the car in motion check that the tube and the small one on the bowl water comes out) if not, proceed to the cleaning ... it often happens that it becomes clogged

comes out perfectly! unfortunately.

[munro]

but the bleed air out of the system you do demolitionman??

[demolitionMan]

but the bleed air out of the system you do demolitionman??

You! and I think that if there was it would not give this problem! or am I wrong?

[munro]

in fact..ragionandoci..of all the things said so far to check if it was cos? for all,apart from the thermostat,the primary symptom would be to raise the temperature..not down...strange..very,very strange....

[demolitionMan]

in fact..ragionandoci..of all the things said so far to check if it was cos? for all,apart from the thermostat,the primary symptom would be to raise the temperature..not down...strange..very,very strange....

In FACT :( . I can not continue to change thermostatic radiator valves! something c'? that is not to be!!..I do not understand!

[mafani]

hello I what can I say ? to make up its mind to when you have had this problem,or have you always had,and they gradually return to what you've done so far ,why? ? really strange because the defect of the thermostatic valve must be present when you are walking and takes the wind in front of the radiator,but not using the hot air that you tend to cool only a small radiator

[demolitionMan]

In practice I have not done anything in a physical way! except for change of the friction and the normal service! the defect does when I walk but the well-known start pushing! maybe at every traffic light cala 10-15 degrees when I get the car stops at the traffic lights! but when the engine runs at 2000 rpm and I don't feel the drop in temperature!

[goku]

Maybe I didn't understand a thing.. But the decline of the temperaratura, and real or only reporting from instrumentation??I had a similar problem on bravo.. But it was due to of the masses behind the instrument cluster,just turned on the fan in the hand of the temperature moved up, then gave him a pat on the dashboard and reposition... Try it..

[demolitionMan]

Maybe I didn't understand a thing.. But the decline of the temperaratura, and real or only reporting from instrumentation??I had a similar problem on bravo.. But it was due to of the masses behind the instrument cluster,just turned on the fan in the hand of the temperature moved up, then gave him a pat on the dashboard and reposition... Try it..

The decline ? real.. the hand reflects accurately the temperature.

[sportknight]

Check if when you lower the temperature the fans start to run

[demolitionMan]

Check if when you lower the temperature the fans start to run



Gi? answered on page 2! the fans do not run ever!

[motorsport]

yesterday I stumbled upon a 147 150 hp with the same fault of your own, I have changed the thermostat valve that had always had the low temperature!!

[demolitionMan]

yesterday I stumbled upon a 147 150 hp with the same fault of your own, I have changed the thermostat valve that had always had the low temperature!!

to me if I open the air I have a temp of 90? fixed always.. I don't know what to say..I think that the terr? so if I can't find a solution! I don't believe that ? the radiatorino that is in the dashboard!

[munro]

yesterday I stumbled upon a 147 150 hp with the same fault of your own, I have changed the thermostat valve that had always had the low temperature!!
?.....from.....thermostatic valves has changed 3!!!

[motorsport]

Lucio from dead, if you remember all his soul!!

[progress]

disassemble the water pump and the impeller spins a minimum, and then you have a little bit of water on the return to the tank, however, is crap, that the hand of the temperature reflects the real-ecm

[sportknight]

according to me also the climatizzatoreci sar? some problem in the control unit of the climate

[goku]

disassemble the water pump and the impeller spins a minimum, and then you have a little bit of water on the return to the tank, however, is crap, that the hand of the temperature reflects the real-ecm
I agree with progress..disassemble the pump...

[rondella72]

There are new? demolitionman?

[demolitionMan]

disassemble the water pump and the impeller spins a minimum, and then you have a little bit of water on the return to the tank, however, is crap, that the hand of the temperature reflects the real-ecm

Noncredo that are cavolate. in diagnosis, I can see the temperature of the water and the hour hand indicates + or - the same temperature!the return I believe that it is right to see who falls to the fountain of the liquid in the tank! I have compared it with a 159 I saw a one-minute minimum return had.. by comparing the returns are similar!

[demolitionMan]

according to me also the climatizzatoreci sar? some problem in the control unit of the climate

the climate is not a part of! why? if you attack the climate of my own free will? I feel starting the compressor! but if you do not attack the climate everything is silent! and then I with the climate attacked, I feel the air warm, but not hot air like when I open only the hot air and the car ? to temp the engine of 90?.

[abberello]

I had the same problem on an Audi a3 2.0 tdi, as soon as I opened the hot air (without operating the climate, the water temperature of the engine is lowered, while now on g.p. 1.3 mjet if I open the hot air when the temperature of the liquid ? on 30?, to get the temperature to 90? it takes a nice p?..if I have the fan turned off ? much more? fast, if you instead want to turn the internal recycling (which in practice it does not get air from the outside) puts us even less! Do you think it may be the tap water? Why? what if I'm not mistaken, is the water hot (or cold) from the radiator inside. If it doesn't work well and makes cold water when the radiator is in need of hot water and then the temperature is lowered as it passes the cold water in the circuit. If you know any autodemolitore try to get a used one in order to understand if ? that or not...

[carlo abarth]

would have done just the opposite, I think!!!
disassemble the water pump and the impeller spins a minimum, and then you have a little bit of water on the return to the tank, however, is crap, that the hand of the temperature reflects the real-ecm

[progress]

if I remember correctly, the last machine that had the faucet was the panda old by then the exchange of hot air and the cold is only a door, I think in all the machines, or at least as far as those of the FGA

[progress]

* carlo abarth
it may happen that a little circulates but too little, and therefore, when operating the internal fan tends to lower the temperature and also because the hose back from the radiator and connected in the vicinity of the thermostat, and then where is located the temperature sensor

[progress]

the other thing that comes to mind could be a*******) be that they have reversed the two tubes of the heating

[abberello]

I sold 3 days ago a faucet of a fiesta 2005...saw that at the moment I'm on vacation and I have no chance? to check if the alpha in question c'? the faucet or not but definitely ? a problem of any sensor that when you open the hot air (nn climate), run the cold water in the circuit, and then lowers the temperature of the coolant. I'm not a mechanic, but a autoricambista, and then I go to intuition.

[pinotuning]

I sold 3 days ago a faucet of a fiesta 2005...saw that at the moment I'm on vacation and I have no chance? to check if the alpha in question c'? the faucet or not but definitely ? a problem of any sensor that when you open the hot air (nn climate), run the cold water in the circuit, and then lowers the temperature of the coolant. I'm not a mechanic, but a autoricambista, and then I go to intuition.
:confused::confused::confused:

[demolitionMan]

the other thing that comes to mind could be a*******) be that they have reversed the two tubes of the heating

impossible! have the different diameters! and then I had the problem since before! that's why? I replaced the thermostatic valve..

[demolitionMan]

The guys I'm working all day and I can't seem to make you a video of how does the temperature of the car! cerch? to do it as soon as possible! .,.thanks to all for the interest..

[staffilo500]

I had the same problem on a y baby elephant after having the head and then changed the pump and thermostat in it warmed up and the temperature drops a bit. I solved it with the tempoprobabilmente was only air in the radiator inside. in your case I'd watch the pump and the pipes of the heating if you heat both the thermostat is not from that fault, the faucet is not there ? a shovel that closes and opens

[rondella72]

The guys I'm working all day and I can't seem to make you a video of how does the temperature of the car! cerch? to do it as soon as possible! .,.thanks to all for the interest..

can you post the year of the car and the engine type?

[cicciocar]

Hi,the first thing there, and no faucet,second I would check the water pump and verificherei also the heating pipes, which are not reversed.

[easyalbert]

According to me, or is some return of liquid that you do not know how to bypass the thermostat, or is there some voodoo that you want good, these machines anyway, to me have come to various problems with thermostats bought new...and since ? too much and say too absurd to cooling a bit oversized) a thread is enough movement in addition to the cooling of the stove, which is able to cool the engine....but if you leave it stops to a minimum after a p? attack of the fan and the temperature marks 92??

[demolitionMan]

According to me, or is some return of liquid that you do not know how to bypass the thermostat, or is there some voodoo that you want good, these machines anyway, to me have come to various problems with thermostats bought new...and since ? too much and say too absurd to cooling a bit oversized) a thread is enough movement in addition to the cooling of the stove, which is able to cool the engine....but if you leave it stops to a minimum after a p? attack of the fan and the temperature marks 92??


Never, never attack the fan! remains fixed in 88-89 ?. but if I open the hot air in 2 minutes and get to 55? -60 ? .

[pinotuning]

change again the thermostat ? perfectly calibrated !!
I was on my own, I have already changed 2 and now I have to change the third !!
this car have a thermostatic valve that is' quite disgusting !!

[cinqueturbo]

Then..
let's see if you or understand you you stop at a junction and the temperature of the stove and hand down?

[eismann]

I confirm! change the thermostat!!!!

[MultiBravo]

Also I'd recommend you to change the thermostat.
On an engine generator set I have changed 2 in 2 years, maybe we are born evil, or defective...

[maku1977]

sotituisci the thermostat.... or try it if it opens and closes properly

[ecucilacunta]

Change the thermostat!! I have the same car since 2003 and I have changed 5. (sar? loser). The original to me ? broke after 3 years and I have replaced it with one of the competition ? lasted 6 months. I've tried several brands. The last one I put the original after they were modified(change the code ) ? 2 and a half years that it works. Unfortunately, the thermostatic valves of these cars lack a bit. It is also useless to try them in hot water why? when they begin to starare just that little pressure that comes from the cylinder head to get it to open at very low temperatures.

[progress]

Change the thermostat!! I have the same car since 2003 and I have changed 5. (sar? loser). The original to me ? broke after 3 years and I have replaced it with one of the competition ? lasted 6 months. I've tried several brands. The last one I put the original after they were modified(change the code ) ? 2 and a half years that it works. Unfortunately, the thermostatic valves of these cars lack a bit. It is also useless to try them in hot water why? when they begin to starare just that little pressure that comes from the cylinder head to get it to open at very low temperatures.

when the thermostat opens under the pressure?

thermostats has changed already 2/3 if I remember correctly

[demolitionMan]

when the thermostat opens under the pressure?

thermostats has changed already 2/3 if I remember correctly

Memories good ? the third change!

Answer ecucilacunta : if you put hot water in a bucket and dip the valve if it does not reach the temperature does not open!
changing all three of the bulbs I have not noticed any differences!

I think it's the pump that perhaps at lower rpm the engine is not f? the circular well of the liquid! prover? to change it!

[sportknight]

sorry but how many km has the car? the pump ? been changed to a distribution?

[ecucilacunta]

when the thermostat opens under the pressure?

thermostats has changed already 2/3 if I remember correctly

I have not said that the thermostats are open to pressure, I meant to say that that little bit of pressure that comes on the valve helps to open it.

[ecucilacunta]

Memories good ? the third change!

Answer ecucilacunta : if you put hot water in a bucket and dip the valve if it does not reach the temperature does not open!
changing all three of the bulbs I have not noticed any differences!

I think it's the pump that perhaps at lower rpm the engine is not f? the circular well of the liquid! prover? to change it!

I try do it differently. I put the valve in a pot with two thermostats analog, one inside the valve body and one in the water. I turn on a fornelleto under the pot and look. I do not remember exactly the temperatures of opening and closing. However, you can search for the e-learn of the 147 and li c'? written all over it .

[igor]

excuse the question, but when you changed the thermostat valve have you noticed differences in the first few days (with two valves), if a is the difference? probably ? still the valve
I think that maybe the valve is not off, but that fails to close completely, and then a small amount? water circles still, even if not enough to lower the temperature, but by opening the heating of the water flow increases and the engine at idle is not able to generate enough heat to maintain the temperature
another question, do you have deleted one or more? catalysts from the exhaust? if ? cos? having less pressure against the engine download the hot gases pi? easily, and then not being "slowed down" generates less heat, this is the s? why? on my 147 when I removed the cat ? become much more? slow to get up to temperature
try to limit the air flow to the radiator with cardboard or another, get the machine to the 90's? then turn on the heating without the fan to see if cos? cala, you then remove the cardboard and repeat the test, if cala means that in the radiator and turn the water that should not, and the only thing that circulates the water and the thermostatic valve
from what s? the 147 as the 156 are very subject to breakage of the valves even after a few months or even days but do not s? why?.
hope that was useful

[cinqueturbo]

But when you open the cap of the bottle, ec pressure?

I got a stylus 115hp and same symptoms, and pressure in the cooling circuit after having taken or found the head corroded...
Anti-freeze or anti-Corrosion Always!!...

[ecucilacunta]

You should give a look also to the egr, why? c'? the heat exchanger on the pipe that leads the exhaust gas to the intake. I was on my own I noticed a bit of slowness to warm up after the removal of the egr .

[demolitionMan]

You should give a look also to the egr, why? c'? the heat exchanger on the pipe that leads the exhaust gas to the intake. I was on my own I noticed a bit of slowness to warm up after the removal of the egr .


you can feel the slowness . but then never drops in temperature when heated!

to me it's not this! to me, warms up and then goes down with a hot-air open!

anyway, when it will change? lapompa you will upgrade? on the result!

thanks to all