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VW T5 1.9tdi AXB pump nozzle - High idle even whe engine is warmed up - 3uga

Hi,

I've been having some issues with the car. It seems to want to idle at 1000 rpm even when the engine is warmed up and outside air is 35°C. It does it intermitently and after conecting vcds i couldnt find any related error or malfunctioning sensor except an intermitent camshaft sensor error wich is most likely related to staling the engine when selected the wrong gear.

Any ideas what could be wrong?

VW T5 1.9tdi AXB pump nozzle - High idle even whe engine is warmed up - focussed

Pump nozzle?

What's that about then?

VW T5 1.9tdi AXB pump nozzle - High idle even whe engine is warmed up - elekie&a/c doctor
I think he means it’s a Pd engine . Pumpe Duse .
VW T5 1.9tdi AXB pump nozzle - High idle even whe engine is warmed up - 3uga

Yes, pumpe duse

VW T5 1.9tdi AXB pump nozzle - High idle even whe engine is warmed up - focussed

Possibly coolant temperature sensor faulty? IE Not sending correct block temp to to ECU?

VW T5 1.9tdi AXB pump nozzle - High idle even whe engine is warmed up - 3uga

I've checked temperature and have 3 temeperature sensors shown on vcds but cant tell wich is what. Two of them show a temperature range of 60°C and 70°C and up to 90°C and 86°C, but the third shows 39°C and up to 45°C and I guess the last one was the sensor instaled in the bumper

Edited by 3uga on 08/07/2019 at 11:47

VW T5 1.9tdi AXB pump nozzle - High idle even whe engine is warmed up - jc2

Does the car have A/C?

VW T5 1.9tdi AXB pump nozzle - High idle even whe engine is warmed up - 3uga

Yes it does but it is not activated when the high idle hapens.

Everything that might get the idle high is turned off. The car is a basic model and has only AC, no fog lights, no electric windows and mirrors, no heated windshield, no heated seats.

It does however have a webasto sistem wich is ecu activated and can only be heard working during the cold season. Also checked that for errors and could only find the tank low level error wich i've heard is something that apears when the auxiliary heater is activated but detects fuel tank in the red line and deactivates as to not use fuel and leave you stranded.

I highly daught that the webasto sistem has anything to do with this problem since the high idle is "older" than the webasto. From a past post of mine you can see that I was seeking help with the webasto sistem. My car was heating up realy slow during the cold season and just thaught it was a big car and heat generated by the engine was just simply not enought to heat up the car, until i had a coil spring changed and found out it has aux heater by standard just because it is a big car and designed to heat up even on short trips. Eventualy I found out that a jackass of a mechanic blew up some fuses and insted of replacing them he took the ones that suplied the aux heater. The ones that got blown werent even repleced with the same amp fuse.

I've checked and when the aux. heater starts working idle jumps to 1000. The high idle is something older than the working of the heater. The car is 12 yerars old and the aux heater was not working for at least 5 untill this winter, i think february. High idle started to happen since lest year and got more frequent

Edited by 3uga on 08/07/2019 at 19:06

VW T5 1.9tdi AXB pump nozzle - High idle even whe engine is warmed up - 3uga

A y ideea on simptoms of bad clutch swich?