Injector Wiring Loom Or Glow Plug?

[ronz]

I have the following issues:

 

- No heat from heater

- Overheating in high speed

- White smoke when i start the car from the middle of the car

- Very rough running, but once the car warms up I can turn off then on and sometimes it runs fine no sluggishness!

 

I have tried to keep as short as possible, please help any advice would be great. I have read in the forums and thinking it maybe injector wiring look connection or glow plug in aux heater, is that right. If so anyone have pics on how I get to the loom please?

 

Quick advice would be great really need to sort this out asap.

[seatkid]

- No heat from heater

- Overheating in high speed

 

Water pump failure - change it and the thermostat at the same time

 

- White smoke when i start the car from the middle of the car

 

Glow plug in aux booster heater needs changing

 

 

- Very rough running, but once the car warms up I can turn off then on and sometimes it runs fine no sluggishness!

Possibly related to water pump issue (wrong temperature reported to ECU) or it may be injector loom or a sensor problem (MAF / temp / crankshaft sensor to name but a few)

[mattmatt]

- No heat from heater

- Overheating in high speed

 

Water pump failure - change it and the thermostat at the same time

 

- White smoke when i start the car from the middle of the car

 

Glow plug in aux booster heater needs changing

 

 

- Very rough running, but once the car warms up I can turn off then on and sometimes it runs fine no sluggishness!

Possibly related to water pump issue (wrong temperature reported to ECU) or it may be injector loom or a sensor problem (MAF / temp / crankshaft sensor to name but a few)

 

Does sound like possible w/pump gone. I'd start by scanning the aux heater first as it sounds more like the glow plug is working. Usually if you're getting white smoke its working but if it cuts out it's probably because there's air in the aux heater causing an 'over temp' fault. Possible coolant temp sensor for the final problem.

[Scorpiorefugee]

I've had the water pump loss of impeller problem on the MkII and the heater worked fine. In fact, at speeds above 60 it was the only thing keeping the temperature down. Also, on longish runs, the fuel comsumption improved dramatically, presumably helped by the reduction in loading on the drive belt.

 

I was lucky in that I became aware of the rising teperature before it got too hot so avoided any secondary problems like head gasket etc. Have you been that lucky?

 

Did this all happen at the same time or have you put all your begs in one askit? ;)

Edited November 30, 2008 by Scorpiorefugee

[ronz]

Hi,

Thanks for all the replies.

 

I cleaned the wiring plugged in the injectors and that seems to have solved the rough running drives nicley. But still have the other problems.

 

- White smoke when cold, could it be the glow plug?

- Overheating in high speed,

- No heat from heater - i did manage to get heat from heater when it started overheating the car, and even when it went back to 90 it still carried on blowing warm air for over 20 mins till i turned car off.

 

I did have the overheating problem last year, I had changed the thermostat, which wasn't the cause also had a garage check the waterpump which he said was fine and changed the cambelt at same time, mysteriously it started working once he had put it all back together, he didn't say what it was that solved it.

 

There is no coolant loss that i can see, the pressure in the coolant tank is high when i open it in the morning when the car is cold.

 

Any ideas would be great. It has all happened same time :-(

Edited November 30, 2008 by ronz

[seatkid]

Any ideas would be great.

Buy a new car ;)

[ronz]

i have been there, there is no car better than a galaxy, i would only buy another galaxy, and it will have same problems come up. Recession is here, business is down, well non-existant so finances very limited at the moment. Thats why I realy want to make sure I buy the right part when I do. So any positive diagnostics would be great. I have the following errors from VAG-COM

 

AUX HEATER

 

VAG-COM Version: Release 409.1-US

 

2 Faults Found:

01410 - Heater Over-Temp

06-00 - Signal too High

01409 - Shareware Version. To Decode all DTCs

35-00 - Please Register/Activate

 

 

Auto HVAC

 

VAG-COM Version: Release 409.1-US

 

1 Fault Found:

01184 - Rear Vent Outlet Temperature Sensor (G174)

30-00 - Open or Short to B+

 

Do these help pin point anything?

[mattmatt]

As suspected you have the overtemp fault. As mentioned this is usually because the heater has air in it. To bleed you have to top up coolant to max, raise front of vehicle 50cm above rear and fire up the engine and aux. heater. You may need to disconnect the ambient temp sensor to get it to kick in. The other code is related to the flame going out or a start without a flame. I would personally try bleeding first as its the easiest and then clear the codes and see what comes back. It's not unusual to see a lot of smoke from the aux heater after not being used properly for a while.

 

The other fault could be a dodgey sensor but start by seeing what value you get in the measuring blocks for it.

[ronz]

As suspected you have the overtemp fault. As mentioned this is usually because the heater has air in it. To bleed you have to top up coolant to max, raise front of vehicle 50cm above rear and fire up the engine and aux. heater. You may need to disconnect the ambient temp sensor to get it to kick in. The other code is related to the flame going out or a start without a flame. I would personally try bleeding first as its the easiest and then clear the codes and see what comes back. It's not unusual to see a lot of smoke from the aux heater after not being used properly for a while.

 

The other fault could be a dodgey sensor but start by seeing what value you get in the measuring blocks for it.

 

Thanks for this mattmatt, so do you think the glow plug is ok for the aux heater?

 

I'll try your sugestion first thing tomorrow, 50cm is quite high and here in eastanglia hills are no where to be seen, but will try.

Edited December 1, 2008 by ronz

[ronz]

tried matt matt's sugestion, no joy :-( i measured the blocks and the following:

 

group 1: 14.4v, 50c, 46c, 50 c

group 2: on,on

group 3: on,on,off, blower off

group 4: pump off

 

then 2 mins later:

 

group 1: 14.4v, 115c, 88c, 98c

 

it stared to rocket to 200c the 115

 

Any thoughts?

[mattmatt]

but what fault codes are you still getting when it cuts out?

[ronz]

but what fault codes are you still getting when it cuts out?

 

only code i get is:

 

01410 - Heater Over-Temp

06-00 - Signal too High

[Neils TDi again]

- No heat from heater

- Overheating in high speed

 

Water pump failure - change it and the thermostat at the same time

 

I have to agree this is the most likely cause, just resolved the same issue doing my own pump and stat.