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Chevrolet engine repair questions and answers

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  • eddie
    eddie - 1996 Chevrolet K1500 - Engine - 3 hours ago
    Where is fuel pump fuse located?
    Truck runs but does not start
     
    0 answer
  • carguy45
    carguy45 - 2009 Chevrolet Malibu - Engine - 5 hours ago
    Headlights turned off while driving
    I was on my way home at 2 am and noticed I was leaving the city that my headlights had turned off so I pulled off on the side of the road turned the car off and re started it they came on. I had been having problems with it over heating but I was wondering If ...
     
    • Jimm
      5 hours ago Jimm
      Check these possibilities; faulty headlamp control switch, faulty / corroded negative or positive battery terminal, loose wiring or connection at the headlamp switch or control.
  • psychobabbler617
    psychobabbler617 - 1997 Chevrolet Blazer - Engine - 9/14/2014
    Why does it die when shifted into R or D?
    New fuel pump and assembly, fuel filter is not clogged. Idles in P but dies when put into gear
     
    • jdl
      9/14/2014 jdl
      There isn't much load on the engine in park or neutral, there is more load when you put it in R or D. How long since overall tune-up? Any applicable trouble codes? To check codes yourself, at the least, you need an obd2 code reader.

      jdl
      9/14/2014 jdl
      Just to add, if you have the spider fuel system, it is known for problems. Did you check fuel pressure?
      jdl
      9/14/2014 psychobabbler617
      No trouble codes. It sat for 3-4 yrs because of a bad fuel pump. Could it be the torque converter is stuck in lock up mode? And if so can it be repaired without pulling the tranny?
      jdl
      9/15/2014 jdl
      The torque converter is a good thought. I can't help you with that, I'm not a tranny person.
      jdl
      9/15/2014 psychobabbler617
      Me neither. Thanx for your help.
      jdl
      9/15/2014 jdl
      Let us know what you find.
  • psychobabbler617
    psychobabbler617 - 1997 Chevrolet Blazer - Engine - 9/14/2014
    Why does it die when shifted into R or D?
    It was stored for 3 yrs. New fuel pump and assembly. Fuel pump is not clogged. Runs good in park but dies when put in gear (R or D). Also brakes grab and make a loud noise.
     
    0 answer
  • John
    John - 2006 Chevrolet Impala - Engine - 9/13/2014
    HVAC knocking and ac wont stop
    My son's 2006 impala might have a bad HVAC Air Inlet Door Actuator. There is a knocking noise behind the glove compartment when the ac is running. Yesterday the blower stayed on full blast even after removing the keys and it drained the battery. Today I hooked it up ...
     
    • alex
      9/13/2014 alex
      i have never had one fail that way usually they loose a function but i would pull it out and look for burnt wires and loose connections before i would order a new one. some of the wires are a little under sized and have seen some wires heat up. i would also check the ground and see if it has some power backed up on it because that should be on a keyed circuit. and a bad ground can hold a relay on.
      alex
      9/13/2014 John
      Thanks a lot for the info I'll give that a try.
      alex
      9/13/2014 alex
      their shouldn't be more than around .2 volts on a ground wire.
  • AutoMD Member
    AutoMD Member - 2002 Chevrolet Blazer - Engine - 9/13/2014
    My blazer will not start
    i replaced fuel pump and filter if i use starting fluid it will start and run
     
    • alex
      9/13/2014 alex
      with the key on do you hear you fuel pump turn on. it should run first thing with the key on for about 15 seconds after that it wont turn on again untill it gets oil pressure. if it doesn't turn at all check your relay as soon as you turn the key on you should have power to 2 of your terminals a ground and a ground with some resistance if you have a keyed power but no constant the fuze is blown. if you do but no power to the pump relay is bad. if your pump is running crank the engine some and the exhaust should smell like gas. if it does either the regulator is bad or you have a broken injector line both require replacing the assembly. remove the plenum and it should be kind of dirty in their if their is a clean spot that is where the fuel is leaking. if the exhaust doesnt smell like gas regulator could still be bad and i would recomend buying a fuel pressure guage. 40 dollars for the gauge set is much cheaper than throwing parts. fuel should be real close to 60 psi.
  • kwcrider
    kwcrider - 1996 Chevrolet K1500 - Engine - 9/13/2014
    Engine hesitates, coughs and sputters while trying to accelerate...runs fine in neutral
    engine idles and revs fine in neutral but as soon as I put it in gear it looses power coughs and sputters...hesitates like it wants to go but can't.
     
    • Jimm
      9/13/2014 Jimm
      First step - have the stored fault codes or check engine light scanned - for free - at any local auto parts store; Advance Auto, Auto Zone, NAPA. Then, post a reply as 'add answer' with the specific code for more assistance. There may be a fault code stored in the OBD memory which may not be displayed as a check engine light.

      Possible Causes of Engine Hesitation or Stumble:

      Dirty fuel injectors (cleaning the injectors often fixes this)
      Dirty air filter (change filter)
      Dirty / clogged fuel filter (change filter)
      Bad MAP (manifold absolute pressure) sensor
      Bad TPS (throttle position) sensor
      Bad or dirty MAF (mass airflow) sensor
      Low fuel pressure (leaky fuel pressure regulator or weak fuel pump)
      Vacuum leaks (intake manifold, vacuum hoses, throttle body, EGR valve)
      Bad gasoline (fuel contaminated with water or too much alcohol)

      Sometimes, what feels like a hesitation is actually ignition misfire rather than lean misfire. The causes of ignition misfire may include:

      Dirty or worn spark plugs
      Bad plug wires
      Weak ignition coil
      Wet plug wires
  • kwcrider
    kwcrider - 1996 Chevrolet K1500 - Engine - 9/12/2014
    Engine hesitates, coughs and sputters while trying to accelerate...runs fine in neutral
    engine idles and revs fine in neutral but as soon as I put it in gear it looses power coughs and sputters...hesitates like it wants to go but can't.
     
    • Jimm
      9/12/2014 Jimm
      First step - have the stored fault codes or check engine light scanned - for free - at any local auto parts store; Advance Auto, Auto Zone, NAPA. Then, post a reply as 'add answer' with the specific code for more assistance. There may be a fault code stored in the OBD memory which may not be displayed as a check engine light.

      Possible Causes of Engine Hesitation or Stumble:

      Dirty fuel injectors (cleaning the injectors often fixes this)
      Dirty air filter (change filter)
      Dirty / clogged fuel filter (change filter)
      Bad MAP (manifold absolute pressure) sensor
      Bad TPS (throttle position) sensor
      Bad or dirty MAF (mass airflow) sensor
      Low fuel pressure (leaky fuel pressure regulator or weak fuel pump)
      Vacuum leaks (intake manifold, vacuum hoses, throttle body, EGR valve)
      Bad gasoline (fuel contaminated with water or too much alcohol)

      Sometimes, what feels like a hesitation is actually ignition misfire rather than lean misfire. The causes of ignition misfire may include:

      Dirty or worn spark plugs
      Bad plug wires
      Weak ignition coil
      Wet plug wires
  • Fields0852
    Fields0852 - 2010 Chevrolet Impala - Engine - 9/11/2014
    Vehicle shaking while maintain a steady mph... Happens anywhere from 30 mph and up
    My car shakes very bad while trying to maintain a steady speed. Does not do it while acceleration and does not do it while coast or idle.. If it Starts to shake hard I let off gas and it stops if I push peddle to accelerate and it kicks down a gear it stops engine ...
     
  • dan5000
    dan5000 - 2009 Chevrolet Traverse - Engine - 9/10/2014
    2009 chevy traverse LT will not start
    I have a 2009 chevy Traverse LT with 100,700 miles on it. Since I got it have sent it to the dealership to replace the timing belt and ignition coil misfires, replace the catalytic converter twice. Two weeks ago my wife the driving and smell burnt plastic coming ...
     
    0 answer
  • dan5000
    dan5000 - 2009 Chevrolet Traverse - Engine - 9/10/2014
    2009 chevy traverse LT will not start
    I have a 2009 chevy Traverse LT with 100,700 miles on it. Since I got it have sent it to the dealership to replace the timing belt and ignition coil misfires, replace the catalytic converter twice. Two weeks ago my wife the driving and smell burnt plastic coming ...
     
    0 answer
  • Fields0852
    Fields0852 - 2010 Chevrolet Impala - Engine - 9/10/2014
    Vehicle shaking while maintain a steady mph... Happens anywhere from 30 mph and up
    My car shakes very bad while trying to maintain a steady speed. Does not do it while acceleration and does not do it while coast or idle.. If it Starts to shake hard I let off gas and it stops if I push peddle to accelerate and it kicks down a gear it stops engine ...
     
    0 answer
  • Jones924
    Jones924 - 1999 Chevrolet Silverado 1500 - Engine - 9/9/2014
    My truck seems to be getting to much fuel when starting up. Any ideas on what it is?
    It starts fine the first start up but unless it sits for a while after that it seems like it is flooding out and wants to die. But after i give it some gas it runs just fine. What could it be?
     
    0 answer
  • Paul
    Paul - 1993 Chevrolet Corvette - Engine - 9/9/2014
    Engine stalls and dies and runs rough at times
    The car runs great some times, other times when it is started it will stall and the check engine light comes on. You have to keep revving it to keep it running and will still stall out. I can start it another time and it will run okay for maybe a few days and then ...
     
    • jdl
      9/9/2014 jdl
      What were the actual trouble code numbers? The code doesn't tell you what to replace only that the computer thinks there is a problem on that circuit somewhere. The problem could be in the sensor wiring or connector and not the sensor itself.

      If you think it is a fuel problem check fuel pressure, first. The basics for rough idle, is to check for a leak of some kind, fuel--egr--vacuum, something like that.

      Where applicable, the map and maf can cause the engine to run rough. That doesn't mean the sensors are bad, possible wiring issue for sensor?
  • richd
    richd - 2008 Chevrolet Suburban 1500 - Engine - 9/9/2014
    What to do with #4 cylinder misfire?
    91,000 miles/while driving engine check light come on. Started knocking very loud. engine was low 3 qts of oil. code read #4 cyl had misfire.
     
    0 answer