01 Air pump

[Johnjp]

I have code po410 (airpump) tried changing fuse by battery with no luck, can anyone tell me where is my electric air pump and how to change it on an 01 Jimmy?. How do you check the check valve?.
I heard there may be a modification kit involved.

[xtreme barton]

explain a little more if you can about your problem..

did you check the check valve ?

[Johnjp]

Originally Posted by xtreme barton

explain a little more if you can about your problem..

did you check the check valve ?

How do you check the valve and what should i look for?.

[xtreme barton]

Here's the story on the P0410:

The AIR pump adds air to the exhaust stream to lower emissions. It does this by taking in outside air and pumping it through two one-way check valves into each bank of the exhaust.

About 90% of the time that this code is set, the one-way check valves have worn out or failed and allow water (which occurs naturally in the exhaust) back into the pump. The water partially fills the AIR pump, it can then freeze. When the PCM commands the pump on, if the pump is frozen it cannot turn, thus overloading the circuit and "popping" the fuse.

As far as the location of the fuse, it is in the right front fender well beside the battery, and in front of the horn there.

Sometimes replacing the fuse will fix all your problems and you are all set until next winter when it all happens again.

Also, sometimes water is allowed to enter the pump through the intake side of the system (just a 5/8" hose behind the fan shroud) and ruins the system that way.

GM says that when this system failure occurs due to water intrusion, the pump MUST be replaced. I have had decent luck just blowing the pump out with direct power provided by a test bettery out of the vehicle

GM has also released a remote air intake kit that includes a longer 5/8" hose, a control solenoid, and a one-way check valve to eliminate most possibility of water intrusion.

sometimes just blowing out the motor and replacing the fuse will solve your problem. BUT, to truly repair the problem correctly the AIR pump, the fuse, and the exhaust check valves must be replaced, and the remote air intake kit must be installed.

If your vehicle is still under warranty, then you are lucky. --> The exhaust check valves usually wear out after 3-4 years thus, putting most vehicles out of warranty coverage.

[blazee]

If you're going to copy someone's post, you should at least mention their name:
http://www.automotiveforums.com/vbul...88&postcount=3

[xtreme barton]

Originally Posted by blazee

If you're going to copy someone's post, you should at least mention their name:
http://www.automotiveforums.com/vbul...88&postcount=3

was just trying to post up the facts..

but thanks for the follow up .. im glad to see your doing your job.

i wasnt trying to take credit.. i didnt know i had to post there name either. wasnt aware that was the forums rules ..

[xtreme barton]

by the way i like your mustache in your avatar.

i wish i had your mustache with my beard in my avatar.. lol