help needed with reving engine on warm start up!!

[printman]

Title says it all really

Basically every time i i park up egt fuel papers etc, I come to start my passat TDI 115 pd and i get a reving engine and lots of black smoke 5-10 seconds of this and it decides to idle at 1100 rpm.
So guy's and girls and ideas please

Regards simon.

P.S great forum people

[adamss24]

Title says it all really

Basically every time i i park up egt fuel papers etc, I come to start my passat TDI 115 pd and i get a reving engine and lots of black smoke 5-10 seconds of this and it decides to idle at 1100 rpm.
So guy's and girls and ideas please

Regards simon.

P.S great forum people

Changing Coolant Temp Sender ussualy helps...check if the temp gauge works, if it doesnt, its deffinatelly the CTS. If its not that, maybe low compression between the cylinders.

[printman]

Hi adamss24

Many thanks for your advice I have taken the plunge and bought a Vag com unit and It was a temp sensor in engine managment.

ATB Simon

[printman]

Hi Guys

Sorry but any idea where the engine tempature sender is and a 115PD TDI engine. Is it the sensor mounted in the top hose at the back of the engine?

Regards Simon

[Sam]

Yup, should be either green or blue

[printman]

hi the only green or blue sensor i can find is mounted on the right hand lower hose to the radiator!! . the sensor on the top hose is black and screw mounted plug that plugs in is purple inside but i guess this is the water seal.
part number on top sensor is Bosch 0281 002177/038 906 051.

thanks simon