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2001 Cadillac DeVille DTS Question: What is a smog pump and what does it do

 

Question

Visitor, Fort Worth, TX, March 31, 2010, 10:20

Will a smog pump are a secondary air pump cause your car to run hot? Are what are the symptoms of it going out and what will it do to your car?

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  • Answer #1

    Bret Bodas from RepairPal Test Shop, March 31, 2010, 11:22
     Master

    Hello,
    The secondary air pump is an emissions control device. As the engine is warming up, it emits a lot of unburned fuel into the exhaust system. This is normal for all vehicles. The air pump injects fresh air into the exhaust during engine warm up and it helps to burn up this unburned fuel, thus reducing the amount of harmful emissions from the tail pipe.
    This system will generally have little effect on the way the vehicle operates, but it is possible to have some effect if the system is working when it shouldn't, or otherwise not working properly.

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    Visitor, May 29, 2010, 21:09

    where can i fine a primary air injector for 2000 cadillac deville

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