Question about 2000 Chevrolet 2500

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2000 chevy 2500 4x4 with 7.4 liter . service engine soon light on hook up to scanner it says rich mixture on right and left banks ! what should i look for ?

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Posted on Jan 02, 2017

eric71079
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SOURCE: OBD II Scanner shows multiple random misfires and a lean 2nd bank

YOU MAY NEED TO CHANGE YOUR SPARKPLUGS AND PUT NEW ONES IN IT.

Posted on May 27, 2008

tripletauto
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SOURCE: 2003 Chevy Trail blazer says service engin soon?

you have a trouble code stored. This means the pcm has detected a problem somewhere

Posted on Aug 25, 2008

  • 124 Answers

SOURCE: how do i reset the service engine soon light on

disconnect the battery for 2 min.

Posted on Mar 11, 2009

  • 36 Answers

SOURCE: wire schematics for a 1995 chevy cheyenne 2500

You only have a few choices. Buy a repair manual at a parts store. Go online and google wiring for your truck and you might find it posted for free. Go to Alldata .com and pay for the info you need or ask nicely at a repair shop or dealer that can print off the required info.

Posted on Mar 12, 2009

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Posted on May 06, 2009

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1 Answer

Code 0172, what am I looking 4 on 4.2 in 05 Chevy Trailblazer EXT?


code P 0172 ( if you are using an OBD-11 scanner ) refers to system too rich bank 1====causes --intake blocked --EVAP canister purge valve ---fuel pressure excessive ---EGR valve ---injector/s-- HO2S ( heated oxygen sensor in the exhaust manifold or pipe before the cay converter)
if the engine is performing well, the the first unit to replace is the HO2S as it controls the air/fuel mixture

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i think the check engine light caused by oxygen sensors,due to little misfire detected , fuel system ,bank 1 and bank 2 lean and rich mixtures..

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What's your problem?service engine soon light on code P0132,P2195, P2196


P0132 FORD - O2 Sensor Circuit High Voltage Bank 1 Sensor 1xicon.jpghttp://engine-codes.com/p0132_ford.htmlForum CodePossible causes- Front Heated Oxygen Sensor Bank 1 harness is open or shorted
- Front Heated Oxygen Sensor Bank 1 circuit poor electrical connection
- Faulty Front Heated Oxygen Sensor Bank 1
- Inappropriate fuel pressure
- Faulty fuel injectors
- Intake air leaks may be faulty
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P2195 - O2 Sensor Signal Biased/Stuck Lean Bank 1 Sensor 1

P2196 - O2 Sensor Signal Biased/Stuck Rich Bank 1 Sensor 1

Jun 29, 2012 | Ford Cars & Trucks

2 Answers

P0138 and p0158


These codes, po 138 bank 1 sensor 2 shorted to voltage and code po158 means bank 2 sensor two shorted to voltage. these are the two rear oxygen sensors in the exhaust system. there two up frt and two in the rear, check the wiring on the two rear sensors, make sure that the wiring is not cut or stuck between metal. if the wiring is good then replace both rear sensors, when you get them ask for the left and right after the cat sensors. or bk1 s2 and bk2s2. after replacing them reset the computer. go to an auto parts sotre or if you have a code reader you can do it. hope this helps good day.

Feb 19, 2012 | 2004 Dodge Stratus

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2000 chevy silverado ,5.3 liter engine .service engine soon light on so scanned for problem codes ,results bank 1&2 are running lean .what is the cause or problem that needs to be done to fix


Check for loos connections between the intake and the tube from the air filter. Check if the clamp is loose or leaks in the tube which can cause an incorrect reading. Other than that it may be a dirty MAF sensor which can be fixed by spraying carb cleaning or tuner spray in the intake or it may be bad or a bad oxygen sensor;.

Nov 22, 2011 | Cars & Trucks

1 Answer

I replaced both 02 sensors and still keep get a service engine soon light, with a code p0140 why?


The code is indicating that the reading the computer is picking from the rear O2 sensor is off. This can be caused by many things in the engine, rich fuel mixture, lean fuel mixture. A high-end scan tool needs to be hooked up and a diagnosis done.

Oct 09, 2011 | 2004 Chevrolet TrailBlazer

1 Answer

1996 chevy g10 van with 5.7. when cold seems to start right up but after warmed up very hard starting and when it does start it idles real low and rough than starts ilding high and smooth but has black gas...


Any check engine light? When you start out cold the computer plugs in numbers for the sensors until the engine warms up then it relys on the sensors which sound like are going bad. I would suspect an oxygen sensor first since this will cause the lean then rich situation you describe. auto parts stores have scanners they will hook up free and this would show if the voltages coming from the 02 sensor are off. Also the scanner will show cross counts which is the voltage moving up and down in response to rich and lean air mixture detected in the exhaust. If this is helpful please reply and good luck

Apr 27, 2010 | Chevrolet G10 Cars & Trucks

1 Answer

Chevy ''Service Engine Soon'' light keeps coming on


take about 20 minutes if you have to tools handy. You have 4 02 sensors so be sure to have the tech tell you which one.

Nov 26, 2009 | 2000 Chevrolet 3500

2 Answers

2000 Malibu will not idle


4000 rpm and flucuating is normal. rpm limiter. If its too rich need to find out why. first thing to check is the fuel pressure regualtor, take off the vac hose to it, and if there is fuel in the hose, the regulator is bad and will need replacement. that is only 1 thing that could cause rich running but is always the first thing to check. if its running that bad there should be a service eng soon light on.

Sep 21, 2009 | 2000 Chevrolet Malibu

1 Answer

2000 ford taurus bank 1 and bank 2 running rich


it sounds like the O2 sensors need replaced. bank 1 is the left side and bank 2 the right

Mar 23, 2009 | 2000 Ford Taurus

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