secondary air pump

[Mr_Orange]

Read that post above mate, you sure you aint confusing it with the air-con pump?  Air-con pump doesn't operate below certain temps (ie 4°C).

SAI will come on all summer and all winter, at a "cold start" as it's there to warm the cat and 02 sensors up to operating temp (100s of °C)! 

[dubcruiser]

Read that post above mate, you sure you aint confusing it with the air-con pump?  Air-con pump doesn't operate below certain temps (ie 4°C).

SAI will come on all summer and all winter, at a "cold start" as it's there to warm the cat and 02 sensors up to operating temp (100s of °C)! 

Done the mod mate. Mine is quiet now, but it won't run below 4 degrees.

[dhorsfall2000]

SAI will come on when the car starts from cold, whatever the weather.  Its fitted to warm up the cat converter and improve vehicle emissions.

Perhaps consider doing the rivet/bolt repair as it sounds like its split open to me.  That'll sort out the daft noise!

http://forums.motivemag.com/zerothread?id=3820606&page=1

I have checked out my air pump and it doesnt appear to have pop rivets in it, also my air pump is at the top of the engine next to the air filter box.