How JustAnswer Works:

  • Ask an Expert
    Experts are full of valuable knowledge and are ready to help with any question. Credentials confirmed by a Fortune 500 verification firm.
  • Get a Professional Answer
    Via email, text message, or notification as you wait on our site.
    Ask follow up questions if you need to.
  • 100% Satisfaction Guarantee
    Rate the answer you receive.

Ask 1smartcarguy Your Own Question

1smartcarguy
1smartcarguy, ASE Certified Technician
Category: Car
Satisfied Customers: 610
Experience:  Assoc. degree in automotive technology, ASE certified, Diploma for high perf. engines, dealer tech
32196277
Type Your Car Question Here...
1smartcarguy is online now
A new question is answered every 9 seconds

Cadillac Catera t0411 air injection insuffeciant car will

Resolved Question:

t0411 air injection insuffeciant car will not idle, can start keep rpm 2000 pwr stand at stop to keep running uses a lot of gas lately (told by my daughter)
caddilac men help
caddilacs step child 2000 catera in a world of hurts
MY HAIR IS TURNING GRAY
Submitted: 4 years ago.
Category: Car
Expert:  1smartcarguy replied 4 years ago.

Well this vehicle is a hard one to work on. Not sure why the mechanic tried an air filter or fuel filter. being the code is actually p0411 you need to troubleshoot the air injection system first as this would be the most likely issue since the check engine light has come on indicating this.

 

Are there any other trouble codes?

 

here is some information in regards XXXXX XXXXX next steps that need to be taken in order to resolve this issue. Follow the flow chart

 

CIRCUIT DESCRIPTION
The purpose of the Secondary Air Injection (AIR) system is to reduce Hydrocarbon (HC) , the Carbon Monoxide (CO) , and the Oxides Of Nitrogen (NOx) exhaust emissions by causing any combustible gases in the exhaust to reburn. This also causes the catalytic converters and the Heated Oxygen (HO2S) sensors to reach the normal operating temperatures more quickly, which will allow Closed Loop operation to occur earlier.

When the engine is started, the Engine Control Module (ECM) commands the AIR pump relay and the AIR cutoff valve vacuum control solenoid ON, injecting clean air into the engine exhaust ports. The ECM switches the AIR system OFF when the oxygen sensors become active. The AIR cutoff valve prevents air from being drawn into the system when the AIR pump is OFF. The vacuum to the valve is controlled by the AIR cutoff valve vacuum control solenoid. A check valve close to the engine prevents hot exhaust gases from backing up into the AIR system.

CONDITIONS FOR RUNNING THE DTC
The following DTCs are not set: P0110, P0115, P0116, P0130, P0131, P0132, P0134, P0150, P0151, P0152, P0154, P0171, P0172, P0174, P0175, P0300-P0306, P0412, P0418, P0440, P0442, P0443, P0446 or P0455.

  • The Intake Air Temperature (IAT) is between 5°C (41°F) and 40°C (104°F) .
  • The Engine Coolant Temperature (ECT) is between 18.8°C (65.8°F) and 105°C (221°F) .
  • The engine is at idle.
  • The vehicle speed is 0 km/h (0 mph)
  • The AIR system is active.

CONDITIONS FOR SETTING THE DTC
The ECM has determined that reduced or no secondary air flow is present.

ACTION TAKEN WHEN THE DTC SETS
The ECM illuminates the Malfunction Indicator Lamp (MIL) and records the operating conditions in the Freeze Frame on the second consecutive drive trip that the diagnostic runs and fails.

 

graphic

 

graphic

 

graphic

 

 

 

hope this helps

Accepts greatly appreciated

 

 

1smartcarguy, ASE Certified Technician
Category: Car
Satisfied Customers: 610
Experience: Assoc. degree in automotive technology, ASE certified, Diploma for high perf. engines, dealer tech
1smartcarguy and 10 other Car Specialists are ready to help you
Customer: replied 4 years ago.
what is DTC
Expert:  1smartcarguy replied 4 years ago.
diagnostic trouble code.

JustAnswer in the News:

 
 
 
Ask-a-doc Web sites: If you've got a quick question, you can try to get an answer from sites that say they have various specialists on hand to give quick answers... Justanswer.com.
JustAnswer.com...has seen a spike since October in legal questions from readers about layoffs, unemployment and severance.
Web sites like justanswer.com/legal
...leave nothing to chance.
Traffic on JustAnswer rose 14 percent...and had nearly 400,000 page views in 30 days...inquiries related to stress, high blood pressure, drinking and heart pain jumped 33 percent.
Tory Johnson, GMA Workplace Contributor, discusses work-from-home jobs, such as JustAnswer in which verified Experts answer people’s questions.
I will tell you that...the things you have to go through to be an Expert are quite rigorous.
 
 
 

What Customers are Saying:

 
 
 
  • I would (and have) recommend your site to others I was quite satisfied with the quality of the information received, the professional with whom I interacted, and the quick response time. Thanks, and be sure that I'll be back whenever I need a question answered in a hurry. Stephanie P Elm City, NC
< Last | Next >
  • I would (and have) recommend your site to others I was quite satisfied with the quality of the information received, the professional with whom I interacted, and the quick response time. Thanks, and be sure that I'll be back whenever I need a question answered in a hurry. Stephanie P Elm City, NC
  • used your service this weekend with "Trecers" help. thank you ,thank you, thank you. replaced an A/C fan motor. Local Auto Zone had part. $15.00 "tracer" fee and $40.00 for parts, I saved several hundreds of dollers at a shop. i will recommend you and use you in the future. David L. Richmond, TX
  • 9 dollars, 2 hours of my time, and I drove away. Your diagnosis was right on the mark. Thank you so much. Phil Marysville, CA
  • Lurch. Thank you very much. I had real doubts about this website but your promptness of response, quick followup and to the point answer with picture was incredible. Charles Walnut Creek, CA
  • As a single woman, I really appreciate an excellent and affordable opinion.
    Thank you Geordie, I will not hesitate to contact justanswer in the future!
    Sue Charleston, WV
  • Another great insight to what may be the problem. I will have my mechanic take a look at it tomorrow. Thanks again, Frank...you do indeed know your stuff. Jim Castleberry, FL
  • Excellent reply, and also very quick. Really sounds like the Expert knows what he is talking about. I will be back to use your service when I need more help with my RV. Dutch USA
 
 
 

Meet The Experts:

 
 
 
  • Chris (aka-Moose)

    Technician

    Satisfied Customers:

    846
    16 years of experience
< Last | Next >
  • http://ww2.justanswer.com/uploads/MU/muddyford/2012-6-13_1204_1.64x64.png Chris (aka-Moose)'s Avatar

    Chris (aka-Moose)

    Technician

    Satisfied Customers:

    846
    16 years of experience
  • http://ww2.justanswer.com/uploads/TE/TedG/2012-6-15_14759_avaLarge.64x64.jpg Ted G.'s Avatar

    Ted G.

    ASE Certified Technician

    Satisfied Customers:

    1596
    20 years auto repair experience, ASE Master Tech, Mechanical Failure consultant, Expert Witness
  • http://ww2.justanswer.com/uploads/joecamel90/2008-11-13_03615_head_shot.jpg George H.'s Avatar

    George H.

    ASE Certified Technician

    Satisfied Customers:

    1311
    ASE Master Tech 15+ yrs, AAS Automotive Technology, Factory trained Asian specialist
  • http://ww2.justanswer.com/uploads/AM/amedee/2013-10-24_23656_Amedee1.64x64.jpg Amedee's Avatar

    Amedee

    ASE Master Tech

    Satisfied Customers:

    2367
    ASE Master Tech advanced level specialist
  • http://ww2.justanswer.com/uploads/SU/supermechanic/2013-8-23_03546_500.64x64.jpg Jerry's Avatar

    Jerry

    Master Mechanic

    Satisfied Customers:

    1906
    ASE master, 30+ years. All makes and models. Trouble shooter, shop forman, service manager
  • http://ww2.justanswer.com/uploads/CR/crzydrvr00/2013-11-3_12123_246347.64x64.jpg Richard's Avatar

    Richard

    ASE Certified Technician

    Satisfied Customers:

    942
    12 years Ford Lincoln/Mercury Jaguar dealership as a technician and shop foreman reparing all makes
  • http://ww2.justanswer.com/uploads/ST/Steve7654/2012-6-5_215929_japic800x660.64x64.jpg Steve's Avatar

    Steve

    Auto Service Technician

    Satisfied Customers:

    1980
    25+ yrs experience as a professional working technician; ASE L1 master technician