I have a 2004 buick rainier and i,m getting a code po410

The average cost for a Buick Rainier air pump replacement is between $469 and $572. Labor costs are estimated between $61 and $78 while parts are priced between $408 and $494. Estimate does not include taxes and fees.

2004 Buick Rainier code p0446:

I'm not sure what part to buy or where to find it. Can't find this answer anywhere online. Please help. This is code p0446 and non other.

Exactly what the code entitles, the air injection valves that shoot air in the exhaust to help burn excess gasses when the engine warms up the engine when it's cold are malfunctionning. When the engine is cold is just started, it uses what we call a open loop, the engine runs fuel maps and such with a stored program in the ECU that doesnt take in account all the sensors to allow a smooth start and warmup, then after it's warm enough and all, it goes to closed loop using all sensors to lessen the pollution. So when in closed loop, the ECU uses the oxygen sensors to adjust air/fuel ratio, but seeing as how the air injection is possibly jammed open or malfunctionning in some other way and sending air in the exhaust, the sensor think the engine is running lean and injects extra fuel to compensate, but since the reading is false, the engine is actually running rich and making you lose power. Try bypassing the air injection if you want to test this, just find the hose in the exhaust manifold that goes to some black plastic canister type thing and unplug the hose from the canister and find a way to jam it shut so no air can get in. If you sealed it good you should now have full power when the engine has run a while. Hope this helps!

Well, we have a couple problems here.

First of all, 2005 Buick Rainier is equipped with two different engines, 4.2L (VIN code "S") and the 5.3L (VIN code "P"). It would be really nice to know which one we are talking about.

Then, it doesn't really matter which engine your Buick is equipped with if you are looking for an EGR valve, because NEITHER of these engines is equipped with one.

what about your map sensor ?

code po410 on a 2004 gmc envoy is that there is a problem with the secondary air injection system, you will need to check the fuse located in the engine compartment first, the next step is to start the truck cold and listen for the air pump to turn on for a few seconds, this will sound like a jet engine but not that loud, after it runs for 5 min and you dont hear it then you may have a bad pump which is located under the driverside on frame but if you hear the pump then you may have a bad valve, this valve is located on the exhaust manifold area and has a hose from the pump to valve, remove the hose and check for water, drain any water in the hose, also remove hose at pump and drain, the most common cause for this code is the valve is not opening and the air pump gets water inside and goes bad, thats the po410 code. a quick note; if fuse is blown look under truck near pump and check relay as it fills with water and blows fuse, if this is the case replace relay and blow water out of connector.good day.

This has to do with the secondary air pump system, this system is used at cold start-up and involves three components; air pump, solenoid valve and a relay. Many times the valve becomes stuck or clogged, the relay has also been known to fail.

I believe the check valve is an internal component of the electric AIR shut-off valve. I assume this is a 4.2L as other engines do not have AIR.

Where is the secondary air pump supply pump located on a 2004 buick ranier?

plugs need regapped or changed malibu did the same until i changed them.