Question about 1997 Isuzu Hombre

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Isuzu hombre check engine light

Replaced mass airflow sensor and several oxygen sensors on 1997 isuzu hombre and check engine light returns after any where from 50 miles to 100 miles of travel.also replaced catalyc converter .

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  • klaible Dec 27, 2008

    The dealer said it needs a new ERG valve. Does your truck smell
    gassy and losing mileage? We have one on order. Hopefully,
    this will fix the problem

  • Anonymous Mar 29, 2014

    light stays on

  • Anonymous Mar 29, 2014

    How do I change head gasket on my 1997 Isuzu hombre

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After you did that did you hook it to a car computer to reset the lite? most need this and you can go to a auto zone and rent the computer for free just a deposit and then you get that back. the computer will do it almost for you.

Posted on Feb 16, 2009

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Posted on Jan 02, 2017

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Symptoms of faulty air flow sensor


  • How to Detect and Clean a Faulty Mass Airflow Sensor ... www.carsdirect.com > Car Repair > Engine Repair 2012-02-24 · Symptoms of a Faulty Mass Air Flow Sensor ... Here are some of the most common symptoms of a faulty mass airflow sensor: ... CARSDIRECT IS AN ...
  • Mass Airflow Sensor: An Easy Fix for Big Problems from a ... www.airtexproducts.com/news-blog-mass-airflow-sensor-an-easy-fix... news,blog,mass,airflow,sensor,an,easy,fix,for,big,problems,from,a,little,instrument. ... Mass Airflow Sensor: ... What Are the Symptoms of a Faulty Mass Air Flow Sensor?
  • Signs & Symptoms of a Faulty Mass Air Flow Sensor www.geeksofcars.com/list_5794328_signs-mass-air-flow-sensor.html Signs & Symptoms of a Faulty Mass Air Flow Sensor. The Mass Air Flow Sensor is a device used on many fuel injected automobile engines to measure the density of air ...
  • See Bad Mass Airflow Sensor Symptoms on YouFixCars.com www.youfixcars.com/mass-airflow-sensor.html Video embedded · Mass airflow sensor problems can turn on the check engine light. They can also cause a variety of other symptoms before the ... How to clean mass air flow sensor ...
  • How to ' Tell If You Really Need a Mass Air Flow Sensor ... www.youtube.com/watch?v=aDlHCjgYf8s
    • BY AUTO REPAIR QUESTIONS ANSWERED BY WESLEY HARRISON
    • 4 MIN
    2011-08-22 · Video embedded · ... How To Clean a Mass Air Flow Meter and Tell if you really need ... Mass Air Flow Sensor ' Auto Repair ' Wesley Harrison ... Sensor Symptoms ...

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    Jul 09, 2016 | Cars & Trucks

    Tip

    My Engine Check Light Is Illuminated


    There's nobody on Fixya who can give you a definitive answer as to why your engine check light is on. It just isn't possible, and nobody will tell you to replace parts because some of the parts can be pricey.

    If you can understand a number of the causes that lead to a check light coming on, it will go some way in helping you decide what may be the fault:

    The Oxygen Sensor
    Often referred to as a Lambda sensor.
    An oxygen sensor is fitted on the exhaust system before the catalytic converter. It monitors the unburned oxygen from the exhaust and detects how much fuel is being burned at any given time.
    A faulty oxygen sensor means it's not providing the right data to the computer and will cause a drop in miles per gallon. Some cars may have more than one oxygen sensor.

    Cause
    Over time, the sensor becomes coated by burnt carbon waste from the exhaust and loses its ability to alter the oxygen / fuel mixture for different driving speeds and conditions. A faulty oxygen sensor also increases exhaust emissions.

    A failed oxygen sensor can eventually cause the catalytic converter to burn out. The smell of a burnt catalytic converter is likened to the smell of 'tom cat p**s'. A replacement catalytic converter doesn't come cheap.

    Mass Air Flow Sensor
    The mass airflow sensor tells the car's computer to add the correct amount of fuel based on the amount of air being drawn into the engine for combustion. A faulty mass air flow sensor also affects mpg, increases emissions, and can cause the car to stall.

    Cause
    Mass airflow sensors can fail over time because of an improperly installed air filter - or an air filter that has never been changed. You should replace the air filter at least once a year to help prevent the airflow sensor from failing.

    Spark Plugs
    Yes, faulty spark plugs can cause the engine check light to come on - that's because misfiring plugs cause a problem elsewhere in the fuel/air management.
    You may feel a 'jolting' when accelerating. Spark plugs fail and there's not much you can do to prevent that from happening.

    Fuel Filler Cap
    Probably knows as the gas cap in the USA?
    Incredibly, an untightened or cracked filler cap can cause problems. Some modern cars even have an error code that suggests a faulty fuel cap.

    EGR
    The Exhaust Gas Recirculation valve.
    In internal combustion engines, exhaust gas recirculation is a nitrogen oxide emissions reduction technique used in petrol/gasoline and diesel engines. An EGR works by recirculating a portion of an engine's exhaust gas back to the engine cylinders. It reroutes some of the exhaust gases which are emitted by the engine into the combustion chambers. This effectively reduces temperatures in the combustion chambers.
    Cause
    The exhaust gases from the engine can cause the egr plunger (or 'butterfly valve' - which is a small circular disk inside the throttle body) to stick open or closed, leading to differing symptoms such as engine knock when fuel is ignited too early or rough running. It is the engine timing which is affected.

    Most EGRs can be removed and cleaned out. Most EGRs are expensive to replace.

    Camshaft and/or Crankshaft Sensor
    More often than not when these fail the engine will not start, but this isn't always the case nowadays. Some vehicles have a 'limp home' mode. Replacement of the faulty sensor is the only cure.

    There's other sensors too. Your car is a veritable network of data being transmitted from/to a whole host of interconnected sensors.

    For the home mechanic the most expensive - and frustrating - way of fixing something is to replace one part after the other in the hope that the problem is solved.

    Your first course of action should be to have a diagnostic test carried out. Identify the fault first. It's well worth paying a mobile mechanic to carry out a diagnostic test first.

    on Feb 08, 2016 | Cars & Trucks

    2 Answers

    Where is the mass airflow sensor located on a 1997 Buick Skylark 2.4 liter


    Right off the air box its the first sensor on the vehicle .
    The air is sucked through the air filter then goes through the mass air sensor so its in the air duct .
    They have a spray can cleaner you have to remove the clamps and connections and remove it .Spray it with the cleaner some times it works .
    Its a rather expensive part but its vary important because it is the first sensor that the computer reads to adjust all engine controls .
    Also don't through it away you will get a lot for the re core value.

    Jun 15, 2016 | Buick Cars & Trucks

    2 Answers

    P1133/oxegen sensor


    MAKE SURE THE CONNECTIONS AT THE SENSOR ARE GOOD,ALSO CHECK FOR VACUUM LEAKS,HERE'S A LINK TO YOUR CODE,THE OLD SENSOR MAY BE GOOD,JUST A VACUUM LEAK, P1133 Chevrolet HO2S Insufficient Switching Bank 1 Sensor 1

    Oct 17, 2015 | 2002 Isuzu Rodeo Sport S 3.2L V6 Hard Top

    1 Answer

    Code 157


    Error code 157 on your vehicle indicates a problem with your mass airflow sensor. The mass airflow sensor gives a reading based on the air intake and output within the engine compartment. A properly functioning sensor will contribute to better fuel economy. In some instances, you may be able to clean your mass airflow sensor to clear the error code, but the error will most likely return in a short time. Fortunately, replacing the mass airflow sensor is a reasonably simple repair.

    Read more: How to Correct Engine Code 157 ' eHow.com http://www.ehow.com/how_7982654_correct-engine-code-157.html#ixzz2IH5Ki64X

    Jan 17, 2013 | Ford Windstar Cars & Trucks

    1 Answer

    I recently had problems with my 2005 Mazda MPV stalling. I came to this great site and changed the IAC and it stopped stalling. But 2 days later my check engine light came on. The codes are P2197 P2195...


    The descriptions for your codes are:
    P2197 - H02S (RF) signal stuck lean
    P2195 - H02S (RF) signal stuck lean
    P2187 - Fuel System too lean at idle
    P0102 - MAF circuit low input

    Essentially what's happening is that your MPV is running too lean when at idle. Too much air and not enough fuel. As you speed up - it forces more air into the system which alleviates the problem.

    Examine your mass airflow sensor. It should be completely clean - no fuzzies on it at all. If so - purchase some mass airflow sensor cleaner to clean the sensor. ONLY USE THE PROPER CLEANER TO AVOID DAMAGING THE SENSOR. Disconnect the battery to reset the system and turn off check engine light.

    Otherwise you will need a scan tool to look at the voltages being supplied to/from the PCM for each of the Heated Oxygen Sensors and the Mass Airflow Sensor to determine which part is creating the problem.

    May 25, 2011 | 2005 Mazda MPV

    1 Answer

    1997 sub engine shaking like it wants to shut off , replaced wires and plugs and the thing they connect to . went to oreilly auto parts the obd was used it said mass airflow sensor and o2 sensor HELPPPPP


    If any one of these sensors are bad it would cause this situation The mass Air Flow sensor sends a signal to the Electronic Control Module as to the amount of air flowing through the air duct so it can adjust the fuel air mixture.The O2 sensor senses the oxygen level in the exhaust gases and also tells the PCM to adjust the fuel air ratio accordingly.Before you change these sensors being as costly that they are take them to your local service station and have them tested for proper operation.Also make sure all the connectors are tightly clipped together before replacing them.

    Feb 10, 2011 | 1997 GMC Suburban

    1 Answer

    When engine light stay on


    there are several things that can cause this. it could be the egr valve,or mass airflow sensor , or oxygen sensor , or throttle position sensor . Disconnect the negative battery cable for a minute , then reconnect start the car the engine light should be off , but if it comes back on start checking the above items.

    Oct 27, 2010 | 1996 Nissan Sentra

    1 Answer

    My vehicle just shuts off while im diving, it pulled codes p0453


    They might be refering to the MAP Sensor. A manifold absolute pressure sensor (MAP) is one of the sensors used in an internal combustion engine's electronic control system. Engines that use a MAP sensor are typically fuel injected. The manifold absolute pressure sensor provides instantaneous manifold pressure information to the engine's electronic control unit (ECU). This is necessary to calculate air density and determine the engine's air mass flow rate, which in turn is used to calculate the appropriate fuel flow. (See stoichiometry.)
    An engine control system that uses manifold absolute pressure to calculate air mass uses the speed-density method. Engine speed (RPM) and air temperature are also necessary to complete the speed-density calculation. Not all fuel-injected engines use a MAP sensor to infer mass air flow; some use a MAF (mass air flow) sensor. Several makes use the MAP sensor in OBD II applications to test the EGR valve for functionality. Most notably General Motors uses this approach.
    Contents How the MAP value is used The manifold absolute pressure measurement is used to meter fuel. The amount of fuel required is directly related to the mass of air entering the engine. (See stoichiometric.) The mass of air is proportional to the air density, which is proportional to the absolute pressure and inversely proportional to the absolute temperature. (See ideal gas law.) Engine speed determines the frequency, or rate, at which air mass is leaving the intake manifold and entering the cylinders.
    (Engine Mass Airflow Rate) ˜ RPM × (Air Density) or equivalently (Engine Mass Airflow Rate) ˜ RPM × MAP / (absolute temperature) They could also be refering to the fuel pressure sensor. If so, then yes this also can cause the problem. You shoud have your fuel pressure checked for about $34.00. If you have a bad fuel pressure regulator you will need to change it out. If it remains undelt with then it could take out your fuel pump. Most fuel pumps are located and installed in the top of your fuel tank and are submerged into your tank. It needs the fuel to keep it cool, but if you continually keep your fuel under 1/4 of a tank you will drastically reduce the life of your fuel pump. Fuel pumps can be expensive to replace. I replaced my wifes in her 1997 Chevy Blazer and it cost me $350.00 (lifetime warrenty). If you keep your gas under a 1/4 of a tank most of the time and your pump is found to b bad then you need to opt for the LIFETIME replacement pump. You only want to have to pay for the pump once, believe me. Otherwise you really haven't provided enough of the symptoms to go on. Does it shut off when you are at speed, or stall when at a stop? If it stalls when you come to a stop you could have bad Oxygen sensor(s). If it's the oxygen sensor(s) then you should replace all of them.

    These are merely suggestions.
    Good Luck!

    Mar 14, 2009 | 2001 Oldsmobile Bravada

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