Question about Holden Barina

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Fuel Emissions light that appears on the dash intermittently.

$1700 I have spent on my Holden to get rid of a Fuel Emissions light that still appears on the dash intermittently. And the stupid thing is, besides the light, the car goes OK. ANy ideas what I can do, I have even taken it to Holden (again) and told me to replace the Oxygen Sensor (I have done this 3 times already!)

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The fuel emission light operates from several sensor that if one is out of parameters tells the CPU that the air fuel ratio is incorrect and so the light comes on. IT may be a MAP/MAF/VAF sensor or a ambient air temperature sensor that is not reporting correctly. Have the fault codes read and see what has been recorded and work from there. The engine will operate alright but there may be a slight decrease in economy that you would not notice unless you record the fuel consumption manually.

Posted on Feb 16, 2014

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shanat
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SOURCE: Subaru EJ20 non turbo very flat spot under 2,500rpm, funny sounding exhaust

check your timing belt positioning also inspect the top end with cover of possibly try an oil flush

Posted on May 25, 2008

daves944
  • 1050 Answers

SOURCE: Emissions sensor fuel tank 2001 gmc jimmy

I don't think you have anything wrong, I just don't think you have completed the correct drive cycle yet. Some vehicles must be driven in a very specific way before all the monitors will set. Here is the drive cycle that Gm Recommends:

  1. Cold Start. In order to be classified as a cold start the engine coolant temperature must be below 122°F (50°C) and within 11°F (6°C) of the ambient air temperature at startup.
    Do not leave the key in prior to the cold start or the heated oxygen sensor diagnostic may not run.
  2. Idle. The engine must be run for two and a half minutes with the air conditioner on and rear defroster on. The more electrical load you can apply the better. This will test the O2 heater, Passive Air, Purge "No Flow", Misfire, and - if closed loop is achieved- Fuel Trim.
  3. Accelerate. Turn off the air conditioner and all the other loads and apply half throttle until 55mph (88km/hr) is reached. During this time the Misfire, Fuel Trim, and Purge Flow diagnostics will be performed.
  4. Hold Steady Speed. Hold a steady speed of 55mph (88km/hr) for 3 minutes. During this time the O2 response, air Intrusive, EGR, Purge, Misfire, and Fuel Trim diagnostics will be performed.
  5. Decelerate. Let off the accelerator pedal. Do not shift, touch the brake or clutch. It is important to let the vehicle coast along gradually slowing down to 20 mph (32km/hr). During this time the EGR, Purge and Fuel Trim diagnostics will be performed.
  6. Accelerate. Accelerate at 3/4 throttle until 55-60mph (88-96 km/hr). This will perform the same diagnostics as in step 3.
  7. Hold Steady Speed. Hold a steady speed of 55mph (88km/hr) for five minutes. During this time, in addition to the diagnostics performed in step 4, the catalyst monitor diagnostics will be performed. If the catalyst is marginal or the battery has been disconnected, it may take 5 complete driving cycles to determine the state of the catalyst.
  8. Decelerate. This will perform the same diagnostics as in step 5. Again, don't press the clutch or brakes or shift gears.

Posted on May 18, 2009

  • 3600 Answers

SOURCE: hey this 1995 calvalier had check engine light on,

wheel speed sensor bad.

Posted on Jun 14, 2009

  • 3600 Answers

SOURCE: engine power reduceed

clean the throttle body and replace the mass air flow sensor a know good one and see if that fixes it if it does you found your problem. normally the mass air flow sensor would cause the rig to run crappy atany speed.

Posted on Jun 25, 2009

  • 8 Answers

SOURCE: Had emissions work done (replaced oxygen sensor,

sometimes hoses look brand new but they are not changed all vacum hoses.

Posted on Jul 07, 2009

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