further 1.8t problems

[ub7rm]

I know what it sounds like, Its just I've never paid much attention to when it happens or not!  The more I think about the more I'm sure it happens every time you open the drivers door. (but it only happens once before starting ie if you open the door twice before you start the engine the pump will only prime once)

[AndyMitton]

That's what i thought...it only does it once in a while. like 1 morning out of 7.

does the fuel pump relay power anything else vital? i.e. any sensors?

Thanks, Andy

[ub7rm]

don't know but it should definately buzz every morning.  Sounds like you've found a strong contender there

[AndyMitton]

ok...ill investigate that. im thinking there maybe a leak or damaged valve in the secondary air injection system. been reading up on this a lot. seems to be a very common thing, with a wide range of solutions....anyone any experiences of getting this fixes?? Thanks, Andy

[ub7rm]

A relay is cheap and easy to fix, If it isn't priming every time you open the door then to be honest I think you have found your problem.

http://forums.vwvortex.com/zerothread?id=1995162 is a link to some good info on SAIS issues.  I had a problem where when running it was very noisy, it turned out that the rivets holding the SAIS pump together had rusted out and the casing had opened up, this was fixed by the garage with some replacement bolts.  That said I had no fault codes for this - it was just noisy!  There was no effect on performace.  A genuine SAIS problem should not affect performance, the fuel pump thing obviously will.

[AndyMitton]

thanks for that mate


anyone know of any vag com checks for relay operation? are they listed in those downloadable manuals or anything like that?

also, has anyone experienced problems with their fuel pump relay..anyone expreieced what i'm getting?



Cheers!

[AlanD]

I drop my car off at the station in the morning and it buzzes in the morning. (07:00)

And it buzzes again in the afternoon (17:00)

[ub7rm]

Just a further thought.... are you having any problems with your central locking not working properly or courtesy lights not coming on when they should?  The reason I ask is that if you are having any problems with these then it could be your door switch thats at fault and consequently not telling the pump to start priming.

If these are working fine then its probably your relay.  Unfortunately I don't know any way of testing it with Vag Com - all I know is how to read fault codes!

[1688bran]

When you open the door is quite a distinctive hummmm noise, you will know if you hear it or not.

   so is that hummmm noise suppose to be there cuz like u said every time i open my door i can hear it ..... but i hvnt got any error code showing up .....

[AndyMitton]

Just a further thought.... are you having any problems with your central locking not working properly or courtesy lights not coming on when they should?  The reason I ask is that if you are having any problems with these then it could be your door switch thats at fault and consequently not telling the pump to start priming.

If these are working fine then its probably your relay.  Unfortunately I don't know any way of testing it with Vag Com - all I know is how to read fault codes!

that's a thought...my central locking is a bit poo...as to whether that's due to the fob/its battery i dont know

the courtesy lights are always fine tho

thanks for that one...ill look it up mate!