temp sender/ Glow Plugs problems on 1.6 td

[Gernster]

on my mk2 golf the temp warning light is constantly flashing and the guage doesnt read.

Can somone tell me where the sender is on the engine so I can test/ replace it? Ive just changed the clocks and it hasnt cured the problem.

There are two plugs on what looks like the thermostat housing but dont know which one is the sender!

Part B

Glow Plug led doesn't light, any ideas where to start looking?

I can hear the relay clicking iun and out and the glow plugs work because the car starts! but would like to know how long to leave the ignition before turning over.

[oldskool rich]

wud most lightly be 1 of the 2 senders on the plastic pipe that comes out of the front of ur head, they control ur glow plug LED and temp guage, sumtimes just cum unclipped (thermostat is next to ur water pump, wont be that)

gud luck

[jtanguay]

how long to leave the ignition before turning over.

around 10-15 seconds should do it.

[vanagonturbo]

Wow. That was some pretty terrible spelling.  :roll:

Try checking the level sender on the coolant bottle for the flashing light problem. It sounds like you have a few things going on. Usually if the coolant temp sender for the gauge is shorted to ground, it will make the needle peg out and make the light flash. Its possible that you are low on coolant and thats why the light is flashing.

There are two senders on your engine. It depends on what year you have. If you have metal flanges then you should have either

a. two senders on the coolant flange that goes to the heater core or

b. one sender on that flange and another one that is on the upper radiator hose flange or

c. a four pin plug on the coolant flange that goes to the upper radiator hose.

Check for loose or missing wires. The colors are (IIRC) blue/ white (glow plug relay) and blue/yellow (coolant temp gauge).

HTH

[bmor]

on my 95 Jetta GL Turbo Diesel the dash board glow plug indicator often does not light up, often when the engins is cold this can be remedied by turning off and on the ignition. When engine is warm often not. :?

[Vanagoner]

"

Wow. That was some pretty terrible spelling.]"  :roll:

it is the written dialect of text messaging.  I am still learning it from my teenage daughter.

 I will most assuredly persist in remaining an intransigent old fogey because I compose and render complete words and sentences in pursuit of technical exactitude, and forever surrender any present or implied claim to contemporary culture in deference to my aesthetic of eloquence.
     Moreover, I predict that by 2017, the youth of generation Z will re-incorporate "lost" words from the old vocabulary, translated into their dialect.  Intransigent will become ntraZt, eloquence will be LOcunZ, and eelymosynary = eeymoZy

Howdy oldskool rich  
phat caddy!

p.s.- I'd check the coolant bottle switch.

[Gernster]

cheers guys, will check all those today.

BTW, I have two plugs on the top radiator hose flange as it goes into the engine.

Could it be that the plugs are on the wrong way round?  ill take some pics for you.

I'm lost without my haynes! (UK workshop manuals, but they dont do one for the 1.6 td)

[Gernster]

heres some pics:

Looks like the top sensor is blue/white - brown/white

and side one is yellow/red - brown Is this all ok? ive wd40'd the connections but no difference.

PS its stopped flashing now ive topped it up with coolant!







[/img]

[vanagonturbo]

LOL @ Vanagoner That was highly entertaining!

Gernster, do you have a volt meter? Check resistance between the ground terminal on the battery and the brown wire at each plug. Seeing as how you are having problems with BOTH sensors, its likely that the grounds for them go to the same location and are not making a good connection.

A quick way to test the sensors themselves is to disconnect one, jumper the two terminals and check to see is the gauge pegs out or the glow plug light comes on.

The one with the blue/white should turn on the glow plug light when jumpered with the key in the on position.

The one with the yellow/red wire should peg out the coolant temp gauge and turn on the flashy light.

[Gernster]

cheers mate, good tip, bad earth, why didnt I think of that!

Im a fairly handy mechanic, but am new to VW's!

cheers

Andy

[GTD.]

"

Wow. That was some pretty terrible spelling.]"  :roll:

it is the written dialect of text messaging.  I am still learning it from my teenage daughter.

 I will most assuredly persist in remaining an intransigent old fogey because I compose and render complete words and sentences in pursuit of technical exactitude, and forever surrender any present or implied claim to contemporary culture in deference to my aesthetic of eloquence.
     Moreover, I predict that by 2017, the youth of generation Z will re-incorporate "lost" words from the old vocabulary, translated into their dialect.  Intransigent will become ntraZt, eloquence will be LOcunZ, and eelymosynary = eeymoZy

Howdy oldskool rich  
phat caddy!

p.s.- I'd check the coolant bottle switch.

 :roll: Rich actually is dyslexic

[vanagonturbo]

Dyslexia has nothing to do with choosing to spell (or not spell) the word "you" with one letter ("u").

[vanagonturbo]

cheers mate, good tip, bad earth, why didnt I think of that!

Im a fairly handy mechanic, but am new to VW's!

cheers

Andy

glad to help. I always seem to find it funny that you guys call it earth at least you knew what I meant when I said ground

[Gernster]

given the earth & plugs a good wiggle and the temp guage is now working, but still no glow plug led? Even shorted the sensor, maybe the dash is faulty.

Does the circuit have a fuse?

[mk2diesel]

only fuse is  on the firewall ( metal strip)  

 the relay may be bad  also ( no signal to the dash LED)


if you pull both temp sending  connectors and turn the ignition ON , the glow plugs and light should stay ON ..... remember to reconnect them after testing.