CORSA SRi 16v hairdryer? - Corsa Sport - for Vauxhall and Opel Corsa B, Corsa C and Corsa D

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livefastdriveyoung

Member

Registered: 18th May 03
Location: Near Hartlepool Drives: 2004 BMW 320dse
User status: Offline

22nd Apr 04 at 12:01

what the hell is that thing under my bonnet that sounds like a hairdryer?

its a 95 SRi ecotec

it looks like some cheap electric turbo sh*te thing

AdiSRI

Member

Registered: 1st May 02
Location: Berkshire
User status: Offline

22nd Apr 04 at 12:09

LOL maybe it is........

livefastdriveyoung

Member

Registered: 18th May 03
Location: Near Hartlepool Drives: 2004 BMW 320dse
User status: Offline

22nd Apr 04 at 12:14

it is a standard thing on all of them, but no one knows what the hell it is, its conected to the exhaust system somehow

DangerousDave16v

Member

Registered: 20th Feb 03
User status: Offline

22nd Apr 04 at 12:25

Secondary air injection pump, think it does something on cold start ups??

AdiSRI

Member

Registered: 1st May 02
Location: Berkshire
User status: Offline

22nd Apr 04 at 12:25

yeah its the EGR bit, but mine doesnt make a hairdryer noise!!

Stu_22

Member

Registered: 25th Mar 02
Location: Luton
User status: Offline

22nd Apr 04 at 12:28

It warms the CAT up on start

James R

Member

Registered: 4th Feb 03
Location: 205GTi16/306GTi16
User status: Offline

22nd Apr 04 at 12:35

quote:
Originally posted by AdiSRI
yeah its the EGR bit, but mine doesnt make a hairdryer noise!!

It's the secondary air pump, EGR is different.

quote:
Originally posted by Stu_22
It warms the CAT up on start

No it doesn't, it pump air in to the exhaust on start up to dilute it, so it makes the start up emissions look better because fresh air is being pumped in.

AdiSRI

Member

Registered: 1st May 02
Location: Berkshire
User status: Offline

22nd Apr 04 at 12:50

hmm, where is this in the engine bay? Cant say i have ever heard it on mine?

livefastdriveyoung

Member

Registered: 18th May 03
Location: Near Hartlepool Drives: 2004 BMW 320dse
User status: Offline

22nd Apr 04 at 12:54

its at the front of the engine, on the right hand side, its blck plastic, it had pipes going from exhaust manifold to it

AdiSRI

Member

Registered: 1st May 02
Location: Berkshire
User status: Offline

22nd Apr 04 at 12:56

so thats where the EGR is then.......

James R

Member

Registered: 4th Feb 03
Location: 205GTi16/306GTi16
User status: Offline

22nd Apr 04 at 13:18

It's at the back of the engine on the inlet manifold right hand side, just next ot the throttle body. About the size of a narrow can of baked beans.

Corsa E-Tec

Member

Registered: 4th Feb 04
Location: Stevenage Drives: Leon Cupra
User status: Offline

22nd Apr 04 at 13:43

surely it's infront of the battery! it's the thing that is connected to the little alloy filter.

livefastdriveyoung

Member

Registered: 18th May 03
Location: Near Hartlepool Drives: 2004 BMW 320dse
User status: Offline

22nd Apr 04 at 13:51

yer, thats it, good man

livefastdriveyoung

Member

Registered: 18th May 03
Location: Near Hartlepool Drives: 2004 BMW 320dse
User status: Offline

22nd Apr 04 at 13:52

so er, what is it then? and wots it do?

James R

Member

Registered: 4th Feb 03
Location: 205GTi16/306GTi16
User status: Offline

22nd Apr 04 at 14:08

quote:
Originally posted by j1400

quote:
Originally posted by AdiSRI
yeah its the EGR bit, but mine doesnt make a hairdryer noise!!

It's the secondary air pump, EGR is different.
The EGr system reintorduces exhaust gases in to the inlet to reduce "harmful" nitrogen oxides, it improves emissions again. you can remove it but I wouldn't bother you won't gain anything from it. well a flashing ecu light.

quote:
Originally posted by Stu_22
It warms the CAT up on start

No it doesn't, it pump air in to the exhaust on start up to dilute it, so it makes the start up emissions look better because fresh air is being pumped in.

livefastdriveyoung

Member

Registered: 18th May 03
Location: Near Hartlepool Drives: 2004 BMW 320dse
User status: Offline

22nd Apr 04 at 14:12

cheers mate, wasnt gonna remove it, just wondered wot the heck it was, had me baffled

broster

Premium Member

Registered: 6th Dec 02
Location: Drives: E39
User status: Offline

22nd Apr 04 at 14:13

quote:
Originally posted by j1400

No it doesn't, it pump air in to the exhaust on start up to dilute it, so it makes the start up emissions look better because fresh air is being pumped in.

how does it pump air into the exhaust the bits on the manifold are blocked off on my standard manifold? with it removed you dont geta flashing ecu light eather

James R

Member

Registered: 4th Feb 03
Location: 205GTi16/306GTi16
User status: Offline

22nd Apr 04 at 14:27

The pump no you don't, the EGR yes you do.
blocked off? with what, carbon?? normally there are the veins inside which spread from the central hole to each port, it's the lump right in the middle of the port with little hole in it.

broster

Premium Member

Registered: 6th Dec 02
Location: Drives: E39
User status: Offline

22nd Apr 04 at 14:30

on my old manifold(standard one)the were fine bits of metal along the edge od the holes so it was blocked off from the actual exhaust bit. not connected, similar to this, dunno if you can see what i mean but both my supersprint and standard had these

livefastdriveyoung

Member

Registered: 18th May 03
Location: Near Hartlepool Drives: 2004 BMW 320dse
User status: Offline

22nd Apr 04 at 14:33

this is just getting mad now, I only wanted to know what is was LOL

broster

Premium Member

Registered: 6th Dec 02
Location: Drives: E39
User status: Offline

22nd Apr 04 at 14:37

lol, sorry

James R

Member

Registered: 4th Feb 03
Location: 205GTi16/306GTi16
User status: Offline

22nd Apr 04 at 14:40

Yeah, that right, the air doesn't move ip in to the manifold because the pressure to over come in the exhaust is too much. If you look in the head the port have a bump on the bottom. in the middle of the bump there is a hole. this goes al the way through and comes out just before the valves, as the gases flow out the chamber they are high speed so they hit the top of the portleaving a low pressure region at the base. and it's easier to pump in the air there.
I'll do a diagram to explain myself now.

James R

Member

Registered: 4th Feb 03
Location: 205GTi16/306GTi16
User status: Offline

22nd Apr 04 at 14:58