testing glow plugs

[passat 130 tdi]

vcds states 76.5 degrees , dash states 90 ...... is this a thermostat issue lads ??????? I also logged a file , cant get it to turn into excel graph ....

[scotty33]

I've had thermostat issues with both of mine, highest VCDS temp was about 74-75 deg C with the gauge showing slightly less than 90 (less than a needle width). It does make them thirsty, but would not give a starting issue. I was more concerned about what the cold coolant temp, should be ambient or thereabouts?

[passat 130 tdi]

I've had thermostat issues with both of mine, highest VCDS temp was about 74-75 deg C with the gauge showing slightly less than 90 (less than a needle width). It does make them thirsty, but would not give a starting issue. I was more concerned about what the cold coolant temp, should be ambient or thereabouts?

Fuel Temp	Fuel cooling state	Intake Air Temp	Coolant Temp
~Amb.Temp.*C	On:100%-Off:0%	~Amb.Temp.*C	~Amb.Temp.*C
°C	%	°C	°C
10.8	0	12.6	13.5

[martin1810]

Can you post the measuring block (007 I think) that has the coolant, fuel and air temps. You need to get a reading when the engine is cold and another when it is fully warmed.

[passat 130 tdi]

Can you post the measuring block (007 I think) that has the coolant, fuel and air temps. You need to get a reading when the engine is cold and another when it is fully warmed.

those figures above martin , are the start of my journey , here's the last few rows of a 20 minutes trip ..

55.8	0	25.2	76.5
55.8	0	25.2	76.5
55.8	0	24.3	76.5
55.8	0	24.3	76.5
55.8	0	24.3	76.5
55.8	0	24.3	76.5
55.8	0	24.3	76.5
55.8	0	24.3	76.5
55.8	0	24.3	76.5
55.8	0	24.3	76.5
55.8	0	24.3	76.5
55.8	0	24.3	76.5
55.8	0	24.3	76.5
55.8	0	25.2	76.5
55.8	0	25.2	76.5
55.8	0	25.2	76.5
55.8	0	25.2	76.5
55.8	0	25.2	75.6
55.8	0	25.2	75.6
55.8	0	25.2	75.6
55.8	0	25.2	75.6
55.8	0	25.2	75.6
55.8	0	26.1	75.6
55.8	0	26.1	75.6
56.7	0	25.2	75.6
56.7	0	25.2	75.6
56.7	0	26.1	75.6
56.7	0	26.1	75.6
56.7	0	26.1	75.6
56.7	0	26.1	75.6
56.7	0	26.1	75.6
56.7	0	26.1	75.6
56.7	0	26.1	75.6
56.7	0	26.1	75.6
56.7	0	26.1	75.6
56.7	0	26.1	75.6
56.7	0	26.1	75.6

[martin1810]

The temps are difficult to evaluate because I don't know what the figures were like where you live. The last few days in Norfolk we have had near 0 C temps over night so coolant temp wouldn't be 13.5 C at start up. Perhaps it's warmer where you live. The end journey coolant temps are wrong. They are too low. At 75 C you will probably be running on the wrong injection map and using extra fuel. I still think you should check and clean the coolant sensor connectors and the ecu connector but you probably need a new thermostat. Thermostat won't help the starting though.

[passat 130 tdi]

The temps are difficult to evaluate because I don't know what the figures were like where you live. The last few days in Norfolk we have had near 0 C temps over night so coolant temp wouldn't be 13.5 C at start up. Perhaps it's warmer where you live. The end journey coolant temps are wrong. They are too low. At 75 C you will probably be running on the wrong injection map and using extra fuel. I still think you should check and clean the coolant sensor connectors and the ecu connector but you probably need a new thermostat. Thermostat won't help the starting though.

I know the stat wont help starting , but its something I noticed that's all to be not right ... today things took a turn for the worst , the car now simply refuses to start as if no fuel at all is getting in , and when it finally does fire even when hot , the idle is all over the place , the boost is a bit slow also coming on as if its waiting for fuel also .... no fault codes ,I was going to change the fuel filter,, and it will only fire up when I remove the ect sensor ---- Im giving up on the diy approach and im taking it to a mechanic next week , I cant see him wanting to change the timing belt etc when its running like a bag of shyte ..... fed up now !!!!!!!!!!!!,

[scotty33]

Can a sticky dual mass flywheel affect starting?

Passat 130 tdi, have you read fault codes, now it is not starting?

[passat 130 tdi]

I hope this is my problem .... and no I wont be going anywhere until its changed ... video 3 is today , the other 2 were 2 weeks ago when my problem began.... http://smg.photobucket.com/user/male...ddcc8.mp4.html http://smg.photobucket.com/user/male...d5577.mp4.html http://smg.photobucket.com/user/male...2302f.mp4.html I could hear it slapping against the covers today , so just thought i'd have a look inside..... im thinking the pump timing on start up is out and once running the ecu is correcting the timing .. ??? or am I wrong ?????

[smithy602179]

you may find that changing the belt and a new tensioner may cure your problems if the belt is as loose as it is in the videos , it may have jumped a cog or two did it start giving you trouble after giving it some hard acceleration from a junction by any chance ??????