Water temp problem after thermostat change
Re: Water temp problem after thermostat change
Cool thanks a lot m8!!
B7 RS4 saloon Misano red, comfy seats, JHM tune & JHM full exhaust with cats and resonators - gone.
C5 RS6 Avant Daytona/Cognac - gone.
981 Cayman GTS Gray/Orange.
My youtube
C5 RS6 Avant Daytona/Cognac - gone.
981 Cayman GTS Gray/Orange.
My youtube
Re: Water temp problem after thermostat change
Right, this is what you do:
Ignition on
Press and hold recirculate (the top one)
Press and release the up arrow (vents)
You should see C on the left display and 06 on the right. Or similar numerical value.
Use the driver's side temp +/- buttons to navigate to channel 34 and press recirc to select. On the right the coolant temp will be displayed.
However, having just tried this, I don't get the impression that the refresh rate is very high, but that might be because my sender is working fine.
I watched the temp in the Vagcom, too, and the climate control displayed trailed behind the dash value, so I'm not sure what's going on there. I might have a look at the elec diagrams to see if the sender is sending to one place and then being relayed or whether several devices are using the sendor information directly.
Ignition on
Press and hold recirculate (the top one)
Press and release the up arrow (vents)
You should see C on the left display and 06 on the right. Or similar numerical value.
Use the driver's side temp +/- buttons to navigate to channel 34 and press recirc to select. On the right the coolant temp will be displayed.
However, having just tried this, I don't get the impression that the refresh rate is very high, but that might be because my sender is working fine.
I watched the temp in the Vagcom, too, and the climate control displayed trailed behind the dash value, so I'm not sure what's going on there. I might have a look at the elec diagrams to see if the sender is sending to one place and then being relayed or whether several devices are using the sendor information directly.
Daytona RS6 C5 Avant. Viper'd, Billies, Waggers, MTM box brain, C6 stoppers, xcarlink, R8 coolant cap (woohoo)
///M3 E46 | XC90 (V8, natch) | Passat GTE | RR Classic V8 flapper
"The major difference between a thing that might go wrong and a thing that cannot possibly go wrong is that when a thing that cannot possibly go wrong goes wrong it usually turns out to be impossible to get at and repair."
///M3 E46 | XC90 (V8, natch) | Passat GTE | RR Classic V8 flapper
"The major difference between a thing that might go wrong and a thing that cannot possibly go wrong is that when a thing that cannot possibly go wrong goes wrong it usually turns out to be impossible to get at and repair."
Re: Water temp problem after thermostat change
Just had a look and there's a vent valve on the thermostat that has to be installed with the valve at 12 o'clock. Might be worth asking the garage how they installed it and if they get all shifty there's a clue right thereShoppinit wrote:I wonder if the thermostat was put in in the wrong position. There's a way it goes in.
Daytona RS6 C5 Avant. Viper'd, Billies, Waggers, MTM box brain, C6 stoppers, xcarlink, R8 coolant cap (woohoo)
///M3 E46 | XC90 (V8, natch) | Passat GTE | RR Classic V8 flapper
"The major difference between a thing that might go wrong and a thing that cannot possibly go wrong is that when a thing that cannot possibly go wrong goes wrong it usually turns out to be impossible to get at and repair."
///M3 E46 | XC90 (V8, natch) | Passat GTE | RR Classic V8 flapper
"The major difference between a thing that might go wrong and a thing that cannot possibly go wrong is that when a thing that cannot possibly go wrong goes wrong it usually turns out to be impossible to get at and repair."
Re: Water temp problem after thermostat change
That's confusing. Looks like the G62 water temp sender has 2 outputs. One that goes to the instrument cluster and the other that goes straight to the ECU.
Nothing goes straight to the aircon, so I don't know which source it's getting its info from. I'm tempted to say the ECU because it has a CAN connection to that and my values weren't the same when I was looking at the Vagcom values (instrument cluster) and the climatronic in diagnostic mode...
Bloody computers...
Nothing goes straight to the aircon, so I don't know which source it's getting its info from. I'm tempted to say the ECU because it has a CAN connection to that and my values weren't the same when I was looking at the Vagcom values (instrument cluster) and the climatronic in diagnostic mode...
Bloody computers...
Daytona RS6 C5 Avant. Viper'd, Billies, Waggers, MTM box brain, C6 stoppers, xcarlink, R8 coolant cap (woohoo)
///M3 E46 | XC90 (V8, natch) | Passat GTE | RR Classic V8 flapper
"The major difference between a thing that might go wrong and a thing that cannot possibly go wrong is that when a thing that cannot possibly go wrong goes wrong it usually turns out to be impossible to get at and repair."
///M3 E46 | XC90 (V8, natch) | Passat GTE | RR Classic V8 flapper
"The major difference between a thing that might go wrong and a thing that cannot possibly go wrong is that when a thing that cannot possibly go wrong goes wrong it usually turns out to be impossible to get at and repair."
Re: Water temp problem after thermostat change
Yeah agreed...drove it 3 times today and have not had the issue anymore. But tomorrow's another day...
But on 1 test drive with a passenger the box slipped very nasty on a redline 2nd to 3rd shift. Just out of the blue, only has 700 miles on it since rebuild. Was planning to drive the boat back to Moscow on thursday but it looks like that may be in jeopardy now. Will do another test drive later. I have a warranty on the box but not if I remap the car...which is set for wednesday. Argh.
But on 1 test drive with a passenger the box slipped very nasty on a redline 2nd to 3rd shift. Just out of the blue, only has 700 miles on it since rebuild. Was planning to drive the boat back to Moscow on thursday but it looks like that may be in jeopardy now. Will do another test drive later. I have a warranty on the box but not if I remap the car...which is set for wednesday. Argh.
B7 RS4 saloon Misano red, comfy seats, JHM tune & JHM full exhaust with cats and resonators - gone.
C5 RS6 Avant Daytona/Cognac - gone.
981 Cayman GTS Gray/Orange.
My youtube
C5 RS6 Avant Daytona/Cognac - gone.
981 Cayman GTS Gray/Orange.
My youtube
Re: Water temp problem after thermostat change
Another test drive...still no water temp issues coming back. Also it seems that oil temps are staying a bit lower when driving it hard. Its definitely noticeable...I think air locks are the most likely suspect now, but it is getting better.
Did 8-9 runs from a dead stop well into 3rd gear and there was no slip in all gearchanges...so I dunno anymore what going on! Even did some steep uphill stuff to simulate the passenger weight.
FWIW 1/4 mile by GPS logger was 13.3s with 106mph terminal speed. Fairly normal for a stock car i think.
Did 8-9 runs from a dead stop well into 3rd gear and there was no slip in all gearchanges...so I dunno anymore what going on! Even did some steep uphill stuff to simulate the passenger weight.
FWIW 1/4 mile by GPS logger was 13.3s with 106mph terminal speed. Fairly normal for a stock car i think.
B7 RS4 saloon Misano red, comfy seats, JHM tune & JHM full exhaust with cats and resonators - gone.
C5 RS6 Avant Daytona/Cognac - gone.
981 Cayman GTS Gray/Orange.
My youtube
C5 RS6 Avant Daytona/Cognac - gone.
981 Cayman GTS Gray/Orange.
My youtube
Re: Water temp problem after thermostat change
Fingers crossed it was just an airlock then. Changing the coolant is not straightforward procedure without the VAG tool which uses compressed air to feed the new coolant in (IIRC I could be making that up).
As for the slip, I had the car slam into 4th a couple of hundred miles after having the ATF changed. Soiled my pants, but it hasn't does it since. I put it down to there being air pockets in the valve body. Could be a similar thing with yours.
Toes crossed.
As for the slip, I had the car slam into 4th a couple of hundred miles after having the ATF changed. Soiled my pants, but it hasn't does it since. I put it down to there being air pockets in the valve body. Could be a similar thing with yours.
Toes crossed.
Daytona RS6 C5 Avant. Viper'd, Billies, Waggers, MTM box brain, C6 stoppers, xcarlink, R8 coolant cap (woohoo)
///M3 E46 | XC90 (V8, natch) | Passat GTE | RR Classic V8 flapper
"The major difference between a thing that might go wrong and a thing that cannot possibly go wrong is that when a thing that cannot possibly go wrong goes wrong it usually turns out to be impossible to get at and repair."
///M3 E46 | XC90 (V8, natch) | Passat GTE | RR Classic V8 flapper
"The major difference between a thing that might go wrong and a thing that cannot possibly go wrong is that when a thing that cannot possibly go wrong goes wrong it usually turns out to be impossible to get at and repair."
Re: Water temp problem after thermostat change
Problem was back today, difference being that I just started it and drove away. Yesterday I warmed it up idling and then there was no issue.
Asked my mechanic if they have a sensor in stock, just to replace that tomorrow and try and bleed the air out.
Asked my mechanic if they have a sensor in stock, just to replace that tomorrow and try and bleed the air out.
B7 RS4 saloon Misano red, comfy seats, JHM tune & JHM full exhaust with cats and resonators - gone.
C5 RS6 Avant Daytona/Cognac - gone.
981 Cayman GTS Gray/Orange.
My youtube
C5 RS6 Avant Daytona/Cognac - gone.
981 Cayman GTS Gray/Orange.
My youtube
Re: Water temp problem after thermostat change
Audi uses this:
Might be worth going to a VW / Audi / skoda garage that has a quick service facility and getting them to change your coolant.The cooling system charge unit VAS 6096 serves as a means of charging the cooling system quickly, effectively and independent of gravity. An adapter from the cooling system tester V.A.G 1274 is used for this purpose. Coolant cannot circulate in an incorrectly filled cooling system containing air. The result is thermal stressing of individual engine parts. This can be completely avoided using the cooling system charge unit. There is also an aid for checking the cooling system for leaks directly prior to charging. This way, charging a defective or damaged cooling system can be avoided at the outset.
Advantages:
- charging cooling system without air bubbles
- big saving in time as bleeding no longer necessary
- avoidance of incorrect charging by means of leak test before charging
- effective charging and ease of operation
- simple use
- quick to set-up due to quick acting coupling system
- operates using air pressure, 6 to 12 bar
- safe to use on all models on market. Connection to expansion tank via adapter from cooling system tester V.A.G 1274.
- function and leak test of charge unit without need for additional equipment (self test)
Design and features
Using VAS 6096, a vacuum is created in the repaired, but not yet filled cooling system. If the vacuum remains stable, the cooling system is airtight and the repair work was successful (leak test). If the vacuum drops, this is a clear sign that there is a leak in the system i.e. the cooling system must not be charged. If the leak test was performed successfully, the cooling system can be charged quickly and without air bubbles being generated by coolant being pumped from the unit's reservoir. Once the pressure has been balanced between cooling system and surroundings, the system is completely filled. Then just top up the system to the mark in the expansion tank.
Items supplied
Daytona RS6 C5 Avant. Viper'd, Billies, Waggers, MTM box brain, C6 stoppers, xcarlink, R8 coolant cap (woohoo)
///M3 E46 | XC90 (V8, natch) | Passat GTE | RR Classic V8 flapper
"The major difference between a thing that might go wrong and a thing that cannot possibly go wrong is that when a thing that cannot possibly go wrong goes wrong it usually turns out to be impossible to get at and repair."
///M3 E46 | XC90 (V8, natch) | Passat GTE | RR Classic V8 flapper
"The major difference between a thing that might go wrong and a thing that cannot possibly go wrong is that when a thing that cannot possibly go wrong goes wrong it usually turns out to be impossible to get at and repair."
Re: Water temp problem after thermostat change
Daytona RS6 C5 Avant. Viper'd, Billies, Waggers, MTM box brain, C6 stoppers, xcarlink, R8 coolant cap (woohoo)
///M3 E46 | XC90 (V8, natch) | Passat GTE | RR Classic V8 flapper
"The major difference between a thing that might go wrong and a thing that cannot possibly go wrong is that when a thing that cannot possibly go wrong goes wrong it usually turns out to be impossible to get at and repair."
///M3 E46 | XC90 (V8, natch) | Passat GTE | RR Classic V8 flapper
"The major difference between a thing that might go wrong and a thing that cannot possibly go wrong is that when a thing that cannot possibly go wrong goes wrong it usually turns out to be impossible to get at and repair."
Re: Water temp problem after thermostat change
Looks like there is a bleeder valve on the coolant pipe that goes into the heater matrix.
All models:
- Release spring-type hose clip and pull back coolant hose going to heat exchanger until bleeder hole in hose -arrow- is no longer blocked by the connection.
- Top up the coolant until it emerges from the bleed hole in the coolant hose without bubbles.
- Push coolant hose onto connection and fit spring-type hose clip.
- Close coolant expansion tank.
- Set interior temperature to HI.
- Start engine and let it warm up.
- It should be possible to feel warm air from the heater as soon as the needle of the coolant temperature gauge begins to move.
- Switch off engine.
- Check coolant level.
The coolant level can be above the MAX marking when the engine is warm.
Daytona RS6 C5 Avant. Viper'd, Billies, Waggers, MTM box brain, C6 stoppers, xcarlink, R8 coolant cap (woohoo)
///M3 E46 | XC90 (V8, natch) | Passat GTE | RR Classic V8 flapper
"The major difference between a thing that might go wrong and a thing that cannot possibly go wrong is that when a thing that cannot possibly go wrong goes wrong it usually turns out to be impossible to get at and repair."
///M3 E46 | XC90 (V8, natch) | Passat GTE | RR Classic V8 flapper
"The major difference between a thing that might go wrong and a thing that cannot possibly go wrong is that when a thing that cannot possibly go wrong goes wrong it usually turns out to be impossible to get at and repair."
Re: Water temp problem after thermostat change
Did you manage to sort this problem out at all? I've a similar problem although my coolant/thermo was never changed so I'm hoping it's just the sensor. Don't suppose you have the part code for it and point me in the right direction as to where it is in the engine bay to change it?
Thanks
Thanks
Noggy Blue RS6!
Rover 220 Turbo Track Toy!
Rover 220 Turbo Track Toy!
Re: Water temp problem after thermostat change
It was indeed the sensor in the end. I don't know the p/n but IIRC it's a fairly universal coolant temp sensor that's common in the VAG range of cars. Any dealer should have it in stock.Smokes wrote:Did you manage to sort this problem out at all? I've a similar problem although my coolant/thermo was never changed so I'm hoping it's just the sensor. Don't suppose you have the part code for it and point me in the right direction as to where it is in the engine bay to change it?
Thanks
You have to take off the airbox, the sensor is near the back of the engine on the (for RHD cars) passenger side. It's secured with a kind of clip and sits vertically with a plug on top. But I only stood there and watched as my mechanic changed it lol
B7 RS4 saloon Misano red, comfy seats, JHM tune & JHM full exhaust with cats and resonators - gone.
C5 RS6 Avant Daytona/Cognac - gone.
981 Cayman GTS Gray/Orange.
My youtube
C5 RS6 Avant Daytona/Cognac - gone.
981 Cayman GTS Gray/Orange.
My youtube
Re: Water temp problem after thermostat change
Ah thanks JC, at least I know where it is! Now to hunt down the part number
Noggy Blue RS6!
Rover 220 Turbo Track Toy!
Rover 220 Turbo Track Toy!
Who is online
Users browsing this forum: srichards and 67 guests