EGR valve no. - ETKA

[cr33p]

Can anyone please tell me the EGR valve part no. for a Seat Ibiza TDI 110hp (2001), with the motor code ASV. I don't have ETKA.

Thanks in advance.

M.

 

[sssstew]

have you tried using the vag cat website?

 

[cr33p]

Thanks for the advice. I have registered and found the number.

 

[sssstew]

cool

 

[Jon TDI]

I have used Vagcat in the past, but is useless to me now as it doesn't have the new generation of VAG vehicles listed.

 

[sssstew]

should have kept the old tdi sport then jon

 

[cr33p]

sssstew: thanks for remiding me about vagcat again

The problem with my car is that the EGR valve is open 4% all the time (vagcom shows that). First I'll take a look if the EGR is clogged and after that try changing the N18 and N75 valves to where the fault is.

 

[ChrisGTL]

Just incase you need to see owt else

 

[cr33p]

Thanks, mate. That's usefull.

Does anyone know what's the function of the no.13 hose on the picture? (goes into the airbox)

 

[sssstew]

no i dont, i have pondered this before.

 

[Muttley]

The airbox provides a source of clean-ish "atmospheric" air, the high-pressure reference against which the vacuum from the vacuum pump (34 in the ETKA diagram, I think) acts. You have to have a source of "normal" air otherwise the vacuum actuators would stay sucked down

I think the pipe is attached on the "dirty" side of the air filter, otherwise it would see the lower pressure of the air intake tract.

The diagram doesn't show all the vacuum system, there should also be an anti-shudder valve actuator on the ASV engine (same one I've got) and of course the brake servo.

 

[sssstew]

excellent thanks for the info mutley. yes it does connect on the dirty side.

 

[Muttley]

From reading elsewhere I seem to remember that the control units 9 (which is the N18 valve) and 25 (the N75 valve) spend most of their time switching, oscillating between vacuum and atmospheric to produce the varying pressures needed for analog control of the actuators. It might be better if the EGR valve itself also oscillated rather than opened, might discourage the formation of burned deposits that eventually jams them part-open during operation causing limp mode at 70-80mph (well, in my old TDI 90 Ibiza at any rate) The Toledo has its EGR disabled

The anti-shudder valve only has two positions, open or shut, so it has a simpler actuator. It's also one of the reasons for the vacuum reservoir, as the vacuum pump shuts off at the same time as the anti-shudder valve is needed - the vac pump is driven off the end of the camshaft as far as I remember.

I think the use of vacuum actuators for the turbo and EGR is mainly to avoid the use of electronics next to hot things like the exhaust ...

I drew a diagram of the vacuum system a while ago, and added a pic of the signals into/out of the ECU. I don't think the ECU picture is complete, I'm sure there are connections I've missed off, but it does give an idea of how much information is going in and out. Hopefully the link below will let it appear.

 

[sssstew]

another good explaination and nice diagram, thanks for this mutley.