secondary air
#1
#2
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Chances are it's described in detail on jag's TOPIx (Search will get you more about TOPIx).
I expect it's air added to the exhaust to reduce emissions (emissions laws get tighter and tighter and ever tighter) - but see TOPIx.
I don't think it will be in JTIS as I believe it was added after JTIS ceased.
I expect it's air added to the exhaust to reduce emissions (emissions laws get tighter and tighter and ever tighter) - but see TOPIx.
I don't think it will be in JTIS as I believe it was added after JTIS ceased.
#3
#4
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Secondary air is a system to warm up the catalyzers fast, helping reduce emissions from a cold engine (the over-rich air/fuel mixture and it's unburned HC) as the catalyzers work best when hot. There are two systems, a cheaper one that works at idle only, and a more expensive one with two exhaust injection points, an upper one to speed up up catalyzer heating and a lower one to help clean-up. There is an air pump that can get dirty/clogged, and it may be driven by a belt that can snap. It's an old idea from the 1960s.
Leedsman.
Leedsman.
#6
#7
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I wanted to check that the system is working properly. I thought since the pump is working, the valve is working and there is no blockage that my next step was to check for correct voltage??? I found the SAI MAP sensor on the wiring diagram but can not find its location. Do you think I'm going in the wrong direction? Any suggestions?
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