Noisy Secondary Air Pump

Ads · 16-10-2007, 13:40

Hello,

I know that when my '01 vRS starts up from cold the seconday air pump starts and then stops when the car has warmed up. However, for a week or so the pump has been very noisy - sounds like exhaust is blowing, except the engine sounds normal after the pump has gone off.

Is it possible a hose is loose? I've tried checking hoses but, to be honest, I don't know which hoses are relevant as I don't know where the air pump is! Can anyone describe exaclty where it is?

Also, does anyone know the cost of replacing the air pump if it is knackered?

cheers.

LJ_Matt · 16-10-2007, 15:28

Can't help you with location but mine was replaced under warranty (thank god!) - pointed out by the dealer while in for other work

.
I was told the cost was about £400

, although if it's just noisy I'd probably live with it for that money.

kenny rsell · 16-10-2007, 17:29

found this link on here not long ago, good step by step instructions for fixing sec/air pump. hope its of use
Step-by-step guide for repairing the Secondary Air Pump (with pictures) - uk-mkivs

Ads · 17-10-2007, 07:11

Thanks. That guide does sound like the noise I'm getting. However, I don;t have the following...

Tools used:
Trolley Jack
Axle Stands x 2
T20 Torx screwdriver

or MECHANICAL ABILITY

lordrobs · 17-10-2007, 13:38

Mine sounds awful too

Are they actually needed? My car runs like crap when the air pump is going then as soon as that stops its smooth as silk

duke of hazzard · 18-10-2007, 09:03

mine might be suffering from this, only when its started from dead cold. It doesnt sound mechanically wrong just burbles like a scooby for 30 seconds or so before it gets a bit warm.

Beretta · 18-10-2007, 09:08

Quote:

Originally Posted by lordrobs

Mine sounds awful too

Are they actually needed? My car runs like crap when the air pump is going then as soon as that stops its smooth as silk

What does the secondary air pump actually do ????????

duke of hazzard · 18-10-2007, 09:11

according to the guide its used to get the cat upto temp and feeds air to the crank case breather. id describe the noise very differently to what the golf lot say it sounds like, most of my noise seems to just be the Carbonio sucking extra hard (ooh err!) while it warms up over the first 30 seconds or so.

Ads · 18-10-2007, 13:16

Well the noise seems to have stopped now.

However, this seems to be because the air pump is now not starting at all!

So it looks like it might be deceased, as it was a cold start this morning.

Backing up a further question - is it actually necessary or does it just reduce emissions?

woodenspatulas · 18-10-2007, 13:38

Quote:

Originally Posted by Ads

Well the noise seems to have stopped now.

However, this seems to be because the air pump is now not starting at all!

So it looks like it might be deceased, as it was a cold start this morning.

Backing up a further question - is it actually necessary or does it just reduce emissions?

as above, its to help the cat get up to temp quicker. helping it last longer. so its not really needed. i cant speak for skodas but the later versions of my engine in my vectra hadnt got secondary air pumps anyway! so it cant be all that necsary

vrs180 · 18-10-2007, 13:46

Quote:

Originally Posted by Beretta

What does the secondary air pump actually do ????????

It helps reduce cold start emissions by pumping filtered air into the exhaust manifold. The air mixes with the exhaust gases and helps burn pollutants and generate extra heat to bring the cat up to operating temp more quickly.

Hope this helps.

bill.

Beretta · 18-10-2007, 13:51

Was just wondering, as others are, what happens if you run without it???

vrs180 · 18-10-2007, 14:22

Quote:

Originally Posted by Beretta

Was just wondering, as others are, what happens if you run without it???

I dont know.... I suppose it might put on a CEL light ?

If your feeling brave, you could try pulling out the relay and see what happens.

Go on...I dare you

bill

Beretta · 18-10-2007, 18:06

Quote:

Originally Posted by vrs180

I dont know.... I suppose it might put on a CEL light ?

If your feeling brave, you could try pulling out the relay and see what happens.

Go on...I dare you

bill

In the forces I learned never to volunteer for anything................

martziniuk · 18-10-2007, 19:00

The pump warms the cat up quicker on cold start. Without the pump the emmisions would be worse, but would the engine be pumping slightly unburnt fuel through and is there a possibility this could damage the cat?
I personally wouldn't have thought so but who knows.

mattbeef · 18-10-2007, 22:40

I didnt think that the car would drive unless you left it to idle for a few moments before?

Im sure that i read the above to vag20v as someone with a golf had the secondary air pump go

Liverpool-Lad · 18-10-2007, 23:16

Quote:

Originally Posted by mattbeef

I didnt think that the car would drive unless you left it to idle for a few moments before?

Im sure that i read the above to vag20v as someone with a golf had the secondary air pump go

I drive away straight after startup. No problems.

martziniuk · 19-10-2007, 07:16

Quote:

Originally Posted by Liverpool-Lad

I drive away straight after startup. No problems.

Me too and mines got 100k on the clock.
So does this fix just reseal the pump? as thats the way it looks.

batfink · 19-10-2007, 09:27

I had the same problem from cold start with mine.I put it in to the local skoda dealership who done a diagnostic check which came up secondary air pump was faulty.They said it was £271 for a new one and £100 to fit.All it does is warm up the cat quicker so that we dont pollute the atmosphere as much.When i asked if the acr would drive ok they said it would be fine and wouldn't affect performance or emissions for mot.Eventually when it does pack up completely they said the engine management light might come on which they can cure as and when for £30.Its alot of money for naff all really unless your an eco warrior of course.Hope this helps.

16-10-2007, 13:40	#1
Ads Briskodian Join Date: Feb 2005 Location: Essex Posts: 13 Thanks: 0 Thanked 0 Times in 0 Posts	Noisy Secondary Air Pump Hello, I know that when my '01 vRS starts up from cold the seconday air pump starts and then stops when the car has warmed up. However, for a week or so the pump has been very noisy - sounds like exhaust is blowing, except the engine sounds normal after the pump has gone off. Is it possible a hose is loose? I've tried checking hoses but, to be honest, I don't know which hoses are relevant as I don't know where the air pump is! Can anyone describe exaclty where it is? Also, does anyone know the cost of replacing the air pump if it is knackered? cheers.

16-10-2007, 15:28	#2
LJ_Matt Light Jockey! Join Date: Jul 2006 Location: Somerset, UK Posts: 668 Thanks: 1 Thanked 10 Times in 10 Posts	Re: Noisy Secondary Air Pump Can't help you with location but mine was replaced under warranty (thank god!) - pointed out by the dealer while in for other work . I was told the cost was about £400 , although if it's just noisy I'd probably live with it for that money. __________________ Regards, Matt ________________________________________________ Assumption is the mother of all foul ups

16-10-2007, 17:29	#3
kenny rsell Briskodian Join Date: Aug 2006 Location: East Lothian Posts: 396 Thanks: 17 Thanked 31 Times in 28 Posts	Re: Noisy Secondary Air Pump found this link on here not long ago, good step by step instructions for fixing sec/air pump. hope its of use Step-by-step guide for repairing the Secondary Air Pump (with pictures) - uk-mkivs __________________ Diamond silver octavia vRS,xenons,Jetex downpipe with sports cat,Jetex cat back system,Green panel filter,Forge i pro remap,Forge 007 dv,Milotec bumper grills,TT arch vent mod.

17-10-2007, 07:11	#4
Ads Briskodian Join Date: Feb 2005 Location: Essex Posts: 13 Thanks: 0 Thanked 0 Times in 0 Posts	Re: Noisy Secondary Air Pump Thanks. That guide does sound like the noise I'm getting. However, I don;t have the following... Tools used: Trolley Jack Axle Stands x 2 T20 Torx screwdriver or MECHANICAL ABILITY

17-10-2007, 13:38	#5
lordrobs Briskodian Join Date: Jun 2007 Location: Norwich Posts: 207 Thanks: 2 Thanked 2 Times in 2 Posts	Re: Noisy Secondary Air Pump Mine sounds awful too Are they actually needed? My car runs like crap when the air pump is going then as soon as that stops its smooth as silk __________________

18-10-2007, 09:03	#6
duke of hazzard Briskodian Join Date: Oct 2006 Location: leeds Posts: 325 Thanks: 10 Thanked 13 Times in 11 Posts	Re: Noisy Secondary Air Pump mine might be suffering from this, only when its started from dead cold. It doesnt sound mechanically wrong just burbles like a scooby for 30 seconds or so before it gets a bit warm. __________________ Mods, Colour coded grille, DVD player, Fancy headlights, Whooshy thing, One of them brillo pad filters where the car sucks air in, and windows upgrade on the cpu from ME to Vista!

18-10-2007, 09:11	#8
duke of hazzard Briskodian Join Date: Oct 2006 Location: leeds Posts: 325 Thanks: 10 Thanked 13 Times in 11 Posts	Re: Noisy Secondary Air Pump according to the guide its used to get the cat upto temp and feeds air to the crank case breather. id describe the noise very differently to what the golf lot say it sounds like, most of my noise seems to just be the Carbonio sucking extra hard (ooh err!) while it warms up over the first 30 seconds or so. __________________ Mods, Colour coded grille, DVD player, Fancy headlights, Whooshy thing, One of them brillo pad filters where the car sucks air in, and windows upgrade on the cpu from ME to Vista!

18-10-2007, 13:16	#9
Ads Briskodian Join Date: Feb 2005 Location: Essex Posts: 13 Thanks: 0 Thanked 0 Times in 0 Posts	Re: Noisy Secondary Air Pump Well the noise seems to have stopped now. However, this seems to be because the air pump is now not starting at all! So it looks like it might be deceased, as it was a cold start this morning. Backing up a further question - is it actually necessary or does it just reduce emissions?

18-10-2007, 13:51	#12
Beretta "COLLABORATER" Join Date: Jan 2005 Location: South East Posts: 2,227 Thanks: 20 Thanked 43 Times in 42 Posts	Re: Noisy Secondary Air Pump Was just wondering, as others are, what happens if you run without it??? __________________ Performance like this, it's "IMPOSSIBLE".. Gerry

18-10-2007, 19:00	#15
martziniuk Need more power Join Date: Feb 2007 Location: Driffield, Good old yorkshire Posts: 1,565 Thanks: 26 Thanked 105 Times in 105 Posts	Re: Noisy Secondary Air Pump The pump warms the cat up quicker on cold start. Without the pump the emmisions would be worse, but would the engine be pumping slightly unburnt fuel through and is there a possibility this could damage the cat? I personally wouldn't have thought so but who knows. __________________ Regards Martin Turbo back blueflame exhaust ,Forge FMDV006 Dump valve, Autobahn88 TIP, CAI ,Remapped, FMIC soon..... SCN rolling road day 216.8bhp 264ft/lb (Dyno Dynamics)

18-10-2007, 22:40	#16
mattbeef Needs Money Join Date: Apr 2006 Location: Sheffield Posts: 3,295 Thanks: 37 Thanked 112 Times in 111 Posts	Re: Noisy Secondary Air Pump I didnt think that the car would drive unless you left it to idle for a few moments before? Im sure that i read the above to vag20v as someone with a golf had the secondary air pump go __________________ I few bits here and there but im happy to Performance Torque Go on click me you know you want to

19-10-2007, 09:27	#19
batfink Briskodian Join Date: Oct 2007 Posts: 2 Thanks: 0 Thanked 0 Times in 0 Posts	Re: Noisy Secondary Air Pump I had the same problem from cold start with mine.I put it in to the local skoda dealership who done a diagnostic check which came up secondary air pump was faulty.They said it was £271 for a new one and £100 to fit.All it does is warm up the cat quicker so that we dont pollute the atmosphere as much.When i asked if the acr would drive ok they said it would be fine and wouldn't affect performance or emissions for mot.Eventually when it does pack up completely they said the engine management light might come on which they can cure as and when for £30.Its alot of money for naff all really unless your an eco warrior of course.Hope this helps.

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