air pump solenoid valve

[jbturgeon]

Hi guys, i got a golf 95 with a 1.9aaz and a k14 turbo and a/c. I am wondering if there is a special relay for the air pump solenoid valve as i got no electricity at the terminal. The whole story started when i noticed that my vacuum actuator on my turbo wasn't opening at high rpm. So i got a black cloud on acceleration because the wastegate can't open because no vacuum suck!

I would like to know how to diagnose this electrical problem. The terminal looks very clean, the vacuum works well, and i think that the air pump solenoid valve works fine as i try them on an other volkswagen.

Where is it plug in the fuse box or what is regulating wheter or not to send electricity to make the valve open at high rpm?

Thx. I hope my problem is clearly explained!! 

Here is a pics of the solenoid valve i am talking about.

[jbturgeon]

Should i just adjust the actuator lever so the wastegate will be always open and not worry about the vacuum?

[jbturgeon]

I found this tread about the k03 turbo, does anyone think i could do this for my turbo?

Sounds like the K03 turbo. That vacuum hose is normally connected to what the manual calls the "changover valve". It is used to pull open the wastegate during light load operation, presumably to lower cylinder pressure and reduce the formation of NOX. On passat's it opens in conjunction with the EGR valve.

 You can just ignore it or put a short length of hose on it to prevent the entry of dirt/water.

 The 2 wire connector on the injection pump is connected to a switch on the throttle linkage that is used by the changover valve (or the EGR system on passats) to detect light throttle application. Again, this can be ignored. There is another connection on the 1.9TD pump neare the bottom of the pump housing. this controls the "load dependant timing". When de-energized this valve retards the injection timing. In the original application this valve was de-energized at engine speeds below 2800rpm to reduce NOX emissions (at the expense of fuel economy and power) and energized above 2800rpm to provide best power. You can simply connect it to the fuel cutoff solenoid with a short jumper.

[burn_your_money]

You can just disable it. Make sure that the wastegate is hooked up properly though. You don't want to overspeed that little K03

[jbturgeon]

Thx Tyler.

But should i hook up the wastegate open or close? Will i blow my turbo if i leave it open all the time?