Question about 2004 Chevrolet TrailBlazer
Posted by Anonymous on
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Posted on Jan 02, 2017
The secondary air injection comes from an electric air pump (replaces the old eng. driven smog pump), it seldom runs, but when the car is 1st started you should hear if for about one minute, kinda sounds like a muffled hair dryer. The most common issue is the hoses get knocked off, 2nd is the electric motor failing.
Posted on Sep 05, 2008
SOURCE: No power leaving the relay
Are you testing the relay when the engine is cold?
The air injection pump works for a very short period of time during initial cold engine start.
Once the exhaust stream is warm enough to support O2 sensor function, the pump shuts off and will not come on again until conditions are met.
Let me know.
Posted on Apr 30, 2009
There is a fuse holder box below the battery tray. There is a relay, 30 amp fuse, and a 10 amp fuse in it. The battery and tray have to be removed to access the fuse box.
Posted on Nov 29, 2009
P0128 is coolant operating temperature operating too low. This can be contributed to the Thermostat stuck open or faulty electronic radiator fan clutch. This is common, I had the same issue and replaced the thermostat and fan clutch and had the clutch re-programmed (required) at the dealer. As for the P0410, check the air pump fuse, if blown it will set this code on. Also check the air pump hoses for water and cracks. Hopefully this helps!!
Posted on Apr 20, 2010
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