Tip & How-To about Chevrolet Aveo

2006 Chevy Aveo

My Aveo was throwing codes. They were pointing to O2 sensors or fuel filters. Went back to the basics and replaced plugs, wires, and found out there is no fuel filter to replace. Once the cover was off to work on the plugs, we ran the car and heard a vacuum leak on one of the molded right angle lines. You could move the vacuum line and make it run worse. Replaced the line and cleared the codes - car runs fine.

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2005 Chevy cobalt throwing codes after replacing spark plugs


You can reset it with the battery for 30s just remove the negative plug

Apr 25, 2016 | 2005 Chevrolet Chevrolet Cobalt Base

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1991 Nissan maxima hesitates


Best guess is O2 sensor is reading too much unburned fue in the exhaust for some reason and leaning out the fuel flow to compensate. Runs when you throw more throttle at it but leans out as you try to hold steady speed. Should throw a code though.

Apr 25, 2013 | 1991 Nissan Maxima

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p0305 code, new plugs, wires, cap, rotor, coil, fuel filter and still getting p0305 code any good ideas?


means misfire in #5 cylinder. found this for you. hope this helps
Common Problems That Trigger the P0305
  • Worn out spark plugs, ignition wires, coil(s), distributor cap and rotor (when applicable)
  • Incorrect ignition timing
  • Vacuum leak(s)
  • Low or weak fuel pressure
  • Improperly functioning EGR system
  • Defective Mass Air Flow Sensor
  • Defective Crankshaft and/or Camshaft Sensor
  • Defective Throttle Position Sensor
  • Mechanical engine problems (i.e.-low compression, leaking head gasket(s), or valve problems
Common Misdiagnoses
  • Fuel Injectors
  • Oxygen Sensor(s)
  • Power Train/Drive Train problem

Jan 05, 2011 | 1999 Chevrolet Suburban

5 Answers

2000 ford escort ZX2 with P0171 trouble code. Cleaned MAF, replaced MAF, replaced vacuum lines, replaced upstream o2 sensor. No change. Any ideas?


I am working on the same problem. This 2000 ZX2 was idling rough and throwing a p171 code (bank 1 too lean). I hooked up a scanner to the OBDII port and you could see the O2 sensor at 0 or very low voltage and not switching and the fuel compensation maxed out which indicates a lean condition. Using a flammable Carb cleaner and the engine running I sprayed around the vacuum hoses until the idle picked up. I found a rubber elbow that connects to the bottom of the intake maniflold and feeds vacuum to the PCV valve. Replacing the the elbow with a suitable replacment from the auto part misc parts cards display had it running smoothly and the O2 sensor switching properly. Since this was happening at idle it was not the fuel filter which can cause a lean condition in upper rpms. It is not the MAF or the O2 sensor since it switches when not at idle. Also check the smaller vacuum lines that go to the evap control from the intake vacuum ports (back of manifold just below the throttlebody, most will be cracking if your car is anything like mine. I have also seen this problem with a bad PCV valve.

Jun 01, 2010 | 2000 Ford Escort

2 Answers

unexpected stalling - have replaced pcm, wiring harness, part of the distributer, plugs, wires, o2 sensor....can't figure it out....have spent hundreds of dollars and still no solution.


Did you try replacing the crank sensor.There is a service bulletin for the crank sensor causing stalling on these models.Hope this helps.Good luck.

Apr 12, 2010 | 1999 Dodge Durango

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