Weird problem on the way home from work tonight. I set the temp to 40 on the aircon pod and normally i would start to feel some heat after 5 mins of driving. It was only blowing c.old air. equally to that my internal temp guage was sat on the C and didnt even budge!! Gave the car a good rag and still nothing. when i got home i lifted the bonnet and felt the rad and it felt only luke warm... any ideas?? Thermostat possibly?? Car running fine apart from that!

Setting your aircon pod that high, will leave the valve to the matrix closed until that temp has been reached, i would set it to about 22 and the heat will come through quicker.

You might have some corrosion on the temp sender spade, give both senders a clean and try again.

Check your water level in the rad, if the thermostat is closed/stuck, the rad wont be getting the hot water from the block to cool down.

Check for air lock in the water system.

Try all the easy fixes before going down the thermostat replacement route.

Thanks Groover! Did check the temp spade and its clean as a pin... noticed on the way home last night it took longer than normal to warm up but it did in the end.. the temp guage tho instead of sitting half way up was only sat a quarter of the way up.. doing the same run home tonight it didnt move from the bottom of the guage. not even slightly and that was after a full boost run up the road!

Might have a dodgy gauge, its not that common for the temp gauge to die but it has been known. Ive got a few spares if you want me to send you one to try, at least eliminate the gauge

A low water level can cause this as the heater matrix supply is high up the back of the engine and the water temp sensor is high up at the front too, if the water level is ok then the thermostat is the next thing to suspect.

 

If the stat is stuck wide open the engine coolant will be regulated and normal working temp will not be achieved, this can also have the knock on effect of lower boost if the boost solenoids are still connected.

 

Jeff TT

Might have a dodgy gauge, its not that common for the temp gauge to die but it has been known. Ive got a few spares if you want me to send you one to try, at least eliminate the gauge

 

Might have a dodgy gauge, its not that common for the temp gauge to die but it has been known. Ive got a few spares if you want me to send you one to try, at least eliminate the gauge

 

Thank you very much for the kind offer! Gonna have a quick look tomorrow if I can as the thing that concern's me most is why the engine seemed cold after that quick blast I had home, and also why the Temp gauge didn't even move from it's cold starting position and also when I put my hand on the Rad it only felt a little warm!!!

 

If my thermostat had jammed mostly shut then can understand why the radiator could feel only slightly warm but also it doesn't explain why no heat is coming through the vents!! Surley the water that's in the engine would get hot very quickly as it only has a smaller amount to boil...

 

Obviously the Temp senders are before the engine so if the Rad is staying cool then maybe that's why I'm getting a cold reading??? Hopefully my Conzult unit will turn up soon so I can see what's going on!!

 

A low water level can cause this as the heater matrix supply is high up the back of the engine and the water temp sensor is high up at the front too, if the water level is ok then the thermostat is the next thing to suspect.

 

If the stat is stuck wide open the engine coolant will be regulated and normal working temp will not be achieved, this can also have the knock on effect of lower boost if the boost solenoids are still connected.

 

Jeff TT

 

Thanks for the advise Jeff! Will check the water level tomorrow to see if it's topped up.. Only thing I did do last Friday was do a clutch vaccume assist tank booster removal.. The round thing under the wiper contol box. Removed associated piping to it and the big long pipe that comes out of it the goes around the back of the engine... Had to give that a good tug to get it out so just hope i've not disturbed the water pipes that go through the firewall to the heater matrix...

Thank you very much for the kind offer! Gonna have a quick look tomorrow if I can as the thing that concern's me most is why the engine seemed cold after that quick blast I had home, and also why the Temp gauge didn't even move from it's cold starting position and also when I put my hand on the Rad it only felt a little warm!!!

 

If my thermostat had jammed mostly shut then can understand why the radiator could feel only slightly warm but also it doesn't explain why no heat is coming through the vents!! Surley the water that's in the engine would get hot very quickly as it only has a smaller amount to boil...

 

Obviously the Temp senders are before the engine so if the Rad is staying cool then maybe that's why I'm getting a cold reading??? Hopefully my Conzult unit will turn up soon so I can see what's going on!!

 

 

 

Thanks for the advise Jeff! Will check the water level tomorrow to see if it's topped up.. Only thing I did do last Friday was do a clutch vaccume assist tank booster removal.. The round thing under the wiper contol box. Removed associated piping to it and the big long pipe that comes out of it the goes around the back of the engine... Had to give that a good tug to get it out so just hope i've not disturbed the water pipes that go through the firewall to the heater matrix...

 

In that case, also check the sensors on top of the heater ducting under the dash and sensor pipe as that will affect the heating inside the car, i had a similar issue when i removed the said ducting to fit a clutch pedal and left it a few days before refitting.

if i can help give me a shout jon.

 

dan.:thumbup1:

if i can help give me a shout jon.

 

dan.:thumbup1:

 

Thank you Super Dan!! Had a quick look this morning before work but couldn't see a lot... Radiator was all but bone dry, only had a little water in it which would explain why my heaters we're cold.. Toped it up to the max with the engine off but noticed underneath the car towards the back passenger side of the engine it is dripping a little...

 

Started the engine to let it take that amount of water and topped it up again... Drove to work and when i got there had a look under the engine with it still running and it was only dripping a little... Temperature back to normal now on the guage and heaters working...

 

Topped it up again before driving home and it didn't need much water, only half a pint...

 

So tomorrow on my day off gonna take off my undertray, get it on my mates ramps and have a look... Can't see anything looking down the back of the engine dripping and the heater pipe the goes through the firewall to the heater matrix looks ok and dry when i rub my fingures around it!!!

 

Any suggestions to where it may be comming from would be usefull tho!!! Thank you kind people of the Zed community!! :bow:

you had a plenum bypass done not long ago what about checking all the clamps are tight they do work loose and a hose has not got a split in under pressure!

 

dan.:biggrin:

Thanks Dan! Yeah will check that tomorrow.. the dribbles to appeat to be comning from the passenger side.. just hope we can get to the hoses without plenum off!!

Thanks Dan! Yeah will check that tomorrow.. the dribbles to appeat to be comning from the passenger side.. just hope we can get to the hoses without plenum off!!

 

should do coz thats the point!:lol:

 

dan.:cool3: