Mk1 1.9 Tdi (110bhp) Crank Shaft Sensor.

[seatkid]

My parents called last night and said they were talking to someone who works in a VW / Skoda garage and the first thing he mentioned was the CPS!

 

:o Beware......when a VW garage mentions CPS it means Cost Per Second........ ;)

[westie]

Right....have ordered a new CPS from GSF (?)...they said retail price was

[westie]

Guys,

Strange goings on with my Gal.

last night I tried to hook up a vag-com to look for fault codes.

I could not seem to get it to communicate proberly, so will have another look tonight.

 

 

However....as it was trying to communicate, with the ignition turned on....eventually, the glow plug light lit up, I turned the ignition...and away she went!!!!

 

The car run perfectly, so I then stopped it, restarted it and the glow plug light came straight on and she fired up again.

 

I stopped it again, and this time on restart, the glow plug light did not come on.....and the gal would not start.

 

...left the ignition on for a few mins....then a "click"....then the glow plug ligh back on....and the car starts!!

 

Could the CPS be dodgy, taking time to communicate to the "brain" and until it does, the glow plugs are being told to light up?

 

Or, could it be a glow plug or relay problem?...any ideas?

 

Thanks for sticking with me.

[turk90210]

Hi Westie

sounds like you have a phantom gremlin at work here but from what you are saying I would say

 

1- The vag-com is probably not working (assuming you have a fliebay lead and vag-com version 409) due to an issue with the com ports which has been well documented if you do a search

 

2- if the car started with the glow plug light coming on and now when it doesnt come on it refuses to start to me indicates an electrical fault with possibly the 109 relay or similar

 

3- The CPS only communicates with the ECU(Brain) when it is actually turning over to basically say HEY the engine is turning and this is the position of number 1 cylinder and has no control on the glow plug light

 

Im just going on shift so might not get chance to look for a wiring diagram but no doubt someone might be able to help

 

One final thing though westie looking at the time of your post ( 4.41am) hope your not having sleepless nights over the old gal

[westie]

Not yet got to the sleepless night stage.....just a shift worker who starts at stupid o'clock in the morning!! :o

 

Strange thing....I wait for the glow plug light...I hear a click....turn the key and off she goes.

 

I have a haynes manual...I thought glow plug relay was labelled as 203 and is located bottom right on the 3rd level??

 

Thanks again for your help.....we are getting there. ;)

[turk90210]

sorry westie can't lay my hands on a wiring diagram but you have the haynes to use as a reference

You could be right about the glow plug relay the 109 relay I refer to is another main power relay which has been a pain in the past, the early relays used a printed circuit and sometimes the soldered joints got too hot and broke the connection resoldering the joint was usually sufficient

Is everything working now ????

if so why not disconnect the glow plug relay (or some of the others) and see if that mimics your fault, if its still not running it looks like the multimeter needs to come out

[westie]

No problem Turk.

 

Since I realised about the "the glow plug problem", as long as the light comes on...either waiting for it to, with the ignition on, or turning the ignition on a few times ....touch wood, the Old Gal has fired up and ran fine.

Without the light....she just turns over and over without even sounding interested.

Ive already got a new sensor (