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High idle replaced cat and o2 sensor also pvc and tube?

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I had a high idle problem on my Chevy blazer.there is a air mix censer that controls the idle,it cost a $100.00.I changed it and fixed my problem.IBOUGHT A SHOP MANUAL AND IT TOLD ME ABOUT THE IDLE CONTROL CENSER!

Posted on Oct 30, 2012

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Posted on Jan 02, 2017

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SOURCE: missfire

Have you replaced the coil yet? I assume by all 4 cylinders misfiring you mean P0300 Random Misfire? It could be a number of other things - a faulty fuel injector, coil, etc. Read this article for more info on random misfires - http://www.obd-codes.com/p0300

Posted on Dec 14, 2008

ewashmidas
  • 362 Answers

SOURCE: Determine which O2 sensor to replace.

There are many reasons for a PO171 code, these need to be checked before replacing O2's:

  • Vehicle driven low on fuel or until it ran out of fuel
  • One or more injectors restricted or pressure regulator has failed
  • Fuel delivery system supplying too much or too little fuel during cruise or idle periods (e.g., faulty fuel pump, or dirty fuel filter)
  • Air leaks after the MAF sensor, or air leaks in the PCV system
  • Air leaks at the EGR gasket, or at the EGR valve diaphragm
  • Exhaust leaks before or near where the front HO2S is mounted
  • HO2S is contaminated, deteriorated or it has failed
  • Fuel control sensor is out of calibration (i.e., ECT, IAT or MAP)
  • Base engine "mechanical" fault affecting one or more cylinders.
  • Posted on Feb 10, 2009

    • 718 Answers

    SOURCE: how to replace a 2002 buick rendezvous o2 sensor

    The O2 sersor will require a special socket to avoid damaging the wiring on the new unit. (the old one really doesn't matter so any socket that works can be used on it)
    The first thing to do is spray a thread release agent like PB Blaster® around the threads. You should do it for several days between driving.
    Call the auto parts stores to find one that has loaner tools. They will require a deposit until the socket is returned. It will look something like the picture. Yes you will need a socket wrench too.
    WORKING UNDERNEATH THE VEHICLE, MAKE SURE ITS BLOCK UP SO IT CAN NOT FALL.
    Some more information to consider from a forum

    "You might want to take the O2 sensor you just replaced back and get two new ones. Some times new O2 sensors are defective, also when replaceing them I found it better to replace all of them at the same time for sometimes when replaceing only one the computer sometimes sends back false codes. Another thing is if you buy an after market O2 sensor the wires are just a little bit longer and can cause the computer to send back false codes. The best O2 sensors that I have found are the Boch Platinums designed for your vehicle."


    bosch%2520oxygen%2520sensor%252013444.jpg 67696.jpg

    Posted on Mar 09, 2009

    • 28 Answers

    SOURCE: Code P0141. O2 Sensor heater circuit fault (Bank1,

    It is probably the sensor before the cat. if it has a heater. The heater circuit going bad is a common problem, it does not affect the way the car runs after it warms up, it is an emission device to heat the O2 sensor up quicker than the hot exhaust gas would. It should be replaced because it will keep your check engine light on and you would not be able to pass an emission test.

    Posted on Oct 12, 2009

    Rebgagnon
    • 382 Answers

    SOURCE: 2000 Subaru Outback Wagon (100K miles) with P0420 Code

    I do not know for sure if this is the problem you are having, But, I have noticed that from 95 up to 2002 I have seen a lot of PO420 codes that have been just the sensor. I do not know if it was a weak sensor or just that program telling it that it is below threshold. I did notice that if the vehicles are run for a long trip at highway speed it goes out. I wish you luck and have a great day.

    Posted on Feb 11, 2010

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    1 Answer

    How to replace faulty sensor? How to repair short, open, or high resistance on O2 signal circuit?


    try replacing the oxygen sensor (O2S ) located after the cat converter using the correct tube socket for the job

    Apr 06, 2017 | Cars & Trucks

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    How to fix code PO132 INDICATES THAT THE BANK 1, SENSOR 1 O2 ELECTRICAL CIRCUIT SIGNAL HAD HIGH VOLTAGE FOR A PREDETERMINED PERIOD OF TIME


    code p 0132 refers to heated oxygen sen(HO2S)1 bank 1-- high voltage ====causes --wiring short to positive ---HO2S_sensor---ECM
    it is not an O2 sensor which is after the cat converter but the heated oxygen sensor ( different unit entirely) which is located in the exhaust manifold or exhaust pipe before the cat converter
    bank one is the bank closest to the fire wall
    use the correct tube spanner or there is a very real risk of wire damage to the new unit --

    Apr 06, 2017 | Cars & Trucks

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    Does a Catalytic converter effect idle and emissions?


    yes it does effect emissions and the decisions from o2 sensors are relayed to the computer which can change idle

    May 14, 2014 | 2006 Ford Fusion

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    97 jeep wrangler high idle speed, replaced pvc valve and grommet . can I adjust it or is it computer controlled?


    It is computer controlled and any attempt to adjust will get you no where. Check the entire engine intake system for vacuum leaks. Use a can of carburetor cleaner and carefully spry it all over the intake and hoses, if you hit a leak the engine idle will change. You can also do this with a bottle of propane gas. DO NOT GET CARB SPARY ON THE CARS PAINT.

    Nov 01, 2012 | 1997 Jeep Wrangler

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    Check engine light comes on, will be on for couple days up to two weeks then goes off only to come on again after a while. code po420. I've replaced both o2 sensors and replaced the gas cap, the...


    The after market cat is the likely problem. Catalytic converters are not all the same and over time our shop has learned which aftermarket ones will work and which ones will not.

    The computer is looking at the downstream O2 sensor (the one after the cat) to determine cat efficiency. If the downstream O2 sensor is switching simular to the upstream O2 sensor (the one before the cat) than the computer interprets this as a bad cat. The rear O2 sensor should hold a steady voltage at idle once the car is warmed up.

    Jul 27, 2011 | 2000 Toyota Camry

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    1997 Ford Expedition. As soon as you turn the start it it idles high and then goes to low idle and runs really rough. The whole vehicle shakes. What can the problem be?


    I have a 1997 Expedition and I replaced every sensor and went through all of this. I even changed out the O2 Sensors. The parts guy said I had 3. The problem is that I trusted that person and realize I had 4. I had this hesitation problem and almost stalling out and had 2 codes for Bank 1, Passenger side is Bank 1. There is an Upstream O2 Sensor there that cannot be seen unless you remove the wheel and pull back the plastic fender well. There is a Ford Technical Service Bulletin saying that the A/C drain run directly onto this O2 Sensor and the sensor fails. The way to fix it is to buy a GM PVC tube and modify it to reroute the drain to the 7 o'clock position and replace the O2 Sensor.www.rockauto.com has the O2 Sensors for $20.69 and the PVC Tube is $8.99 at Autozone. I did this and after 3 years of going freaking nuts it is running like a rand new truck, no hesitation, no almost stalling out, acceleration is back and reliable and towing the RV is a pleasure now. I hope all of this helps and I hope that others in my position happen upon this post so that they do not lose as much hair and I and do not waste as much money replacing parts that are not bad in the first place.
    This TSB article is being republished in its entirety to update the Service Procedure.

    ISSUE:
    The Malfunction Indicator Lamp (MIL) may illuminate and Diagnostic Trouble Codes (DTCs) P0133, P0171 and/or P1131 may be stored in memory. Additionally, there may be one or more of the following driveability symptoms:

    Hesitation
    Stumble
    Surge
    Miss
    Rough idle
    Near stall or stall at idle
    Detonation on acceleration
    This may be caused by cold condensate from the A/C system dripping onto the Heated Exhaust Gas Oxygen (HEGO) sensor causing thermocycling of the HEGO sensor .

    ACTION:
    Divert water from dripping onto the sensor by installing a fabricated drain tube to the end of the A/C drain. This should reroute the water and reduce the possibility of the above conditions occurring. Refer to the following Service Procedure for details.

    SERVICE PROCEDURE
    Fabricate a drain tube from PCV Vent Tube (F85Z-6758-BA). To create the drain tube extension, remove the rubber cylinder from the plastic tube and discard. Cut the plastic tube (Figure 1).

    Remove the transmission fluid level indicator.
    Remove the right front wheel.
    Remove the right front fender well splash guard.
    Clean the area around the transmission filler[img src="http://c.fixya.net/fixya20/uploads/images/icon1.png" class="h_mi">duct[img src="http://c.fixya.net/fixya20/uploads/images/icon1.png" class="h_mi">
    Replace the right front HEGO Sensor (F88Z-9F472-AB) and leave the connector disconnected.
    Modify the PCV vent tube (Figure 1) to make a drain for the A/C condensate drain.
    Using needle nose pliers[img src="http://c.fixya.net/fixya20/uploads/images/icon1.png" class="h_mi">
    Refer to Figure 1 and fabricate a tool using a 61x2.5 cm (24x1") I.D. pipe as shown.
    Lubricate the elbow with water.
    NOTE: DO NOT USE SILICONE TO LUBRICATE THE ELBOW AS IT WILL FALL OFF.



    Using the tool, install the modified drain tube at the 7:00 position toward the frame (Figure 2).
    Clean the transmission filler tube.
    NOTE: BE CAREFUL NOT TO DAMAGE THE O-RING AS THIS COULD CREATE LEAKS OR ALLOW CONTAMINATION INTO THE TRANSMISSION.



    Lightly lubricate the transmission filler tube O-ring withpetroleum[img src="http://c.fixya.net/fixya20/uploads/images/icon1.png" class="h_mi">
    Torque the bolt to 11-14 N-m (8-10 lb-ft).
    NOTE: MAKE SURE THE BODY SIDE HEGO WIRING CONNECTOR IS IN THE LOCATOR HOLE IN THE BACK OF THE HEAD.



    Connect the right front HEGO sensor connector.
    Start the vehicle and verify water flow direction. Make sure no condensation drips onto the exhaust manifold bolt.
    Reinstall the right front splash guard.
    Reinstall the right front wheel.
    Clean and reinstall the transmission fluid level indicator.
    NOTE: DEALERS[img src="http://c.fixya.net/fixya20/uploads/images/icon1.png" class="h_mi">




    PART NUMBER PART NAME
    F85Z-6758-BA PCV Vent Tube
    F88Z-9F472-AB Heated Exhaust Gas Oxygen (HEGO) Sensor

    Oct 16, 2010 | Ford Expedition Cars & Trucks

    1 Answer

    I Had a p1131 code replaced o2 sensor before cat it still runs like **** with no check engine light what could be the problem YES I AM A Girl


    vacuum leak in PVC line or clogged PVC. its a leak after the map sensor. o2 sensor is correcting for a lean condition so its adding fuel to your car when the o2 sensor detects the extra air.

    Jul 24, 2010 | 1998 Ford F150 Regular Cab

    1 Answer

    Engine rough idle. code p1131. replaced o2 sensor.


    vacuum leak in PVC line or clogged PVC. its a leak after the map sensor. o2 sensor is correcting for a lean condition so its adding fuel to your car when the o2 sensor detects the extra air.

    May 15, 2010 | 2000 Ford Contour

    1 Answer

    Engine light was on and engine idles rough.


    these O2 sensors are cat convertor check sensors. id be checking cat convertors and hopefully you should try replacing if not all ready is the front bank 2, O2 sensor
    if you have scanner can you see fuel trims in data display to confirm high fuel trim only on bank 2 either +-5 or more indicates problem and if bank 2 sensor 2 has fixed high 700mv reading cat no good(warm idling)

    Jul 10, 2009 | 1998 Isuzu Rodeo

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    1990 jeep cherokee won't idle


    check the ...PVC valve and the MAF sensor.

    Aug 24, 2008 | 1990 Jeep Cherokee Limited

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