does anybody know the problem
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does anybody know the problem
Hello, i'm new to this forum and i heard it's great for help. I started up my car and got the code p0410, which i looked up and it said "air system -b". So i started my car to hear the air pump to see if its operating, and i heard it, but when i disconected the hose going to the check valve, there was no air coming out of the hose. So i decided to take the air pump out and check it. I put the air pump to an external power source. There are 3 electrical prongs on the air pump. 1-NEGATIVE, 1-POSITIVE FOR MOTOR , AND 1-POSITIVE FOR THE PISTON to let the air through. It worked and was producing air, when i hooked it up. But when i put it on the cars prongs, only the motor turns and the piston in the pump doesn't open up to let air through. I then used a voltmeter to see if there was power to the prongs, the positive one for the piston, and there was. So i thought maybe the prongs were dirty. I then stripped the wire on the cars prong,and put an exteral wire, but that didn't work. Now i was realizing that when i connect the air pump to the car, that the power to the piston in the pump disables. Could this be an internal problem in the pump, or in the cars computer? I would really appreciate the help if somebody knows why it's doing this. Thanks in advance.
Team Owner
Joined: Sep 2001
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From: Lake Elsinore, CA
If the pump works in off the car, including the shut-off valve, then I would suspect the vacuum control solenoid valve located just above the PCM just behind the front passenger wheel filler panel is not functioning. There is a vacuum hose and an electrical connector attached to it.
Le Mans Master
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From: Slave to the evil empire
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St. Jude Donor '04
Slow down and take a deep breathe ....The fault your getting is basically saying that the right bank of cylinders is not getting air when the air pump turns on. There are 2 check valves, one for each bank of cylinders, the left one is right there next to the exhaust manifold and if you follow the line back as it goes behind the engine you should be able to feel the other check valve thats behind the intake manifold.
The check valve behind the intake is most likely stuck/corroded on the inside and is not allowing air to pass thru, pull it off and get a replacement they are only around $20.
The check valve behind the intake is most likely stuck/corroded on the inside and is not allowing air to pass thru, pull it off and get a replacement they are only around $20.
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Actually the fault i'm getting is not from the right bank of cylinders. I'm getting the code p0410, which means that no bank of cylinders is getting air. What is the function of the vacuum control solonoid valve,and is it easy to get to. Is there a way of checking it without buying a new 1 first. I'm also getting the code c1255a ebtcm internal malfunction. Does that have anything to do with the air system and my problem? I still dont know why the shut off valve on the air pump does not open when i hook the air pump up to my car, but it does when i hook it up to an external power source. Maybe it has to do with what Patches said " the vacuum control solonoid valve. If anyone has answers, please help. Thanks.
Le Mans Master
Joined: Jul 2002
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From: Slave to the evil empire
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St. Jude Donor '04
Originally Posted by tripod5
Actually the fault i'm getting is not from the right bank of cylinders. I'm getting the code p0410, which means that no bank of cylinders is getting air. What is the function of the vacuum control solonoid valve,and is it easy to get to. Is there a way of checking it without buying a new 1 first. I'm also getting the code c1255a ebtcm internal malfunction. Does that have anything to do with the air system and my problem? I still dont know why the shut off valve on the air pump does not open when i hook the air pump up to my car, but it does when i hook it up to an external power source. Maybe it has to do with what Patches said " the vacuum control solonoid valve. If anyone has answers, please help. Thanks.
Have you fixed the problem yet?
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no, not yet, but a somebody that i know that works at a chevy dealership said that its most likely the diverter and thats not making the valve open, but i still think that its an electrical problem cause when i attach the pump to the cars harness, the pump rotates but there is no air coming out of the pump because the shut off valve or piston in the pump does not open. The power in the cars harness goes from 14.4 volts to 0 when i connect it, but the motor still has power and that part is still getting voltage. Only the shut off valve loses power when i connect it. When i disconnect it, then it regains power. Patches, can possibly be right about the vacuum control solonoid valve. I just have to keep plugging away. Thanks for everybodies response, i appreciate the help.
Le Mans Master
Joined: Sep 2003
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From: Farmington CT
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fwiw--i had the 1416 code, swapped the ck valve from behind the intake(bank 2) to the one visible on the dr side(bank 1), then got 1415(wanted to ck the valve and it's easier to replace in that location), then i unplugged the air pump to get the 0410(the pump would run every minute or so i seemed like it would eventually burn out w/ the leaky ck valve)
just got the new valve from gmpartsdirect.com for $20 shipped(pn 22048212), i realize this doesn't help you w/ your p0410 problem after i typed this, but the point is the pump may have failed by a bad ck valve(the pcm will cycle the pump every minute or so and after awhile leads to failure)--this is my theory of air pump failure, notice it's not a 'law'
just got the new valve from gmpartsdirect.com for $20 shipped(pn 22048212), i realize this doesn't help you w/ your p0410 problem after i typed this, but the point is the pump may have failed by a bad ck valve(the pcm will cycle the pump every minute or so and after awhile leads to failure)--this is my theory of air pump failure, notice it's not a 'law'
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Tech Contributor
Joined: Oct 1999
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From: Charlotte, NC (formerly Endicott, NY)
Code 0410 is set when one of two diagnostic tests fail. The code indicates a failure in the AIR system or something related to the AIR system. The code can be set if the pump is not pumping air or if it does not stop pumping air when the diagnostic disables it. Code 0410 also indicates the failure is common to both the left and right banks of the engine.