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1999 chevy s-10 blazer check engine P0410


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Rsk83
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Jun 10, 2009, 9:23 PM

Post #1 of 7 (12545 views)
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1999 chevy s-10 blazer check engine P0410 Sign In

I have a 1999 Chevy s-10 blazer and i am getting a check engine light with code P0410 the auto part stores and all the info i can find online say that it is my air pump for the secondary air injection system. The problem i am having is i have looked all over the vehicle in every place where i have been told i could be and cant find the pump anywhere. It is almost as if i don't have one. I have checked both fenders, by the bumper, and even by the gas tank still no luck. Any help on this matter would be greatly appreciated, as i am about at my wits end with this problem.PiratePiratePirate


Hammer Time
Ultimate Carjunky / Moderator


Jun 11, 2009, 4:15 AM

Post #2 of 7 (12534 views)
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Re: 1999 chevy s-10 blazer check engine P0410 [In reply to] Sign In

The pump is mounted under the truck, just about below the radiator. It's an electric pump.






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autojoe
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Jun 11, 2009, 7:40 AM

Post #3 of 7 (12528 views)
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Re: 1999 chevy s-10 blazer check engine P0410 [In reply to] Sign In

  

The P0410 code refers to the emissions system. The air pump puts air to the exhaust to lower emissions. It takes in outside air and pumps 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. In any cold climate, especially in climates with higher humidity, this water may be more excessive. 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.

Symptoms
Possibly symptoms include:
  • MIL illumination obviously
  • Hesitation on acceleration
  • Noise from a bad/stuck AIR pump
Causes
A code P0410 may mean that one or more of the following has happened:
  • Water may have collected in the AIR pump or the vent solenoid and frozen or corroded the pump
  • Blown AIR pump fuse due to freezing up
Possible Solutions
Note: There is a technical service bulletin (TSB) regarding this code for a number of GM models. The TSB calls for the replacement of the AIR pump and the installation of a new secondary injection hose. The TSB can be found on the attached pdf file.
Additionally, if you simply replace the AIR pump the problem may return again (and again). If you replace the pump, also clean out the hoses and replace the one-way check valve. If this is on a GM model that the TSB applies to, follow those instructions in the link above. In a few cases, people have put a small hole in the rubber cover on the pump which allows any water to drain out.
Also, please note that this may be covered under the emissions warranty on the vehicle. If your vehicle is out of bumper-to-bumper warranty, check if the emissions warranty is still valid!
  • Replace the AIR pump AND one-way check valve
  • Test and clean the AIR pump AND test and replace the one-way air check valve
  • Replace the AIR pump inlet hose
  • Replace the AIR pump fuse



(This post was edited by autojoe on Jun 11, 2009, 8:29 AM)
Attachments: tsb_04D-183.pdf (78.4 KB)


Rsk83
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Jun 11, 2009, 9:25 AM

Post #4 of 7 (12518 views)
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Re: 1999 chevy s-10 blazer check engine P0410 [In reply to] Sign In

Ive looked under the truck by the radiator and have removed the steering linkage shield. Still unable to locate the pump or any hoses for it. Mad


Hammer Time
Ultimate Carjunky / Moderator


Jun 11, 2009, 9:39 AM

Post #5 of 7 (12515 views)
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Re: 1999 chevy s-10 blazer check engine P0410 [In reply to] Sign In

Maybe someone removed it and that's your whole problem.




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We offer help in answering questions, clarifying things or giving advice but we are not a substitute for an on-site inspection by a professional.



Rsk83
New User

Jun 11, 2009, 9:45 AM

Post #6 of 7 (12508 views)
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Re: 1999 chevy s-10 blazer check engine P0410 [In reply to] Sign In

From what i can see on the truck there is no electrical or hoses anywhere near the radiator. I even went so far as to look at several in the junkyard and they all show no signs of ever having a pump. Could this be a problem with the computer? If so how would i fix it


autojoe
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Jun 11, 2009, 7:51 PM

Post #7 of 7 (12496 views)
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Re: 1999 chevy s-10 blazer check engine P0410 [In reply to] Sign In

 
Attachments: 80954247.gif (22.3 KB)




1999 chevy s-10 blazer check engine P0410


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