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Infiniti engine repair questions and answers

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  • AutoMD Member
    AutoMD Member - 1999 Infiniti Q45 - Engine - 7/30/2014
    Car quit running almost certain its electrical
    I cranked the car and after about 30 seconds, it quit running. It will turn over but the dash lights do not come on, also the windows will not roll down but the door locks work. I have checked the fuses inside pretty good. I looked at the ones under the hood but ...
     
    0 answer
  • Cindy
    Cindy - 1996 Infiniti G20 - Engine - 7/8/2014
    WHAT CAP AM I MISSING????
    Ok so here the big problem; I'm missing some sort of "Cap" that's located near the left side of my engine. It's not engine oil cap nor the cap that you put anti freeze in. So what could the name of that cap i'm missing be??.. Please any info could be really helpful! ...
     
    • AutoMD Member
      7/8/2014 AutoMD Member
      Could possibly be the black cap to the power steering reservoir or one of the two yellow caps which go to the coolant reservoir or windshield washer reservoir.
  • AutoMD Member
    AutoMD Member - 2001 Infiniti QX4 - Engine - 7/4/2014
    My truck won't start, and I'm now at a loss as to why
    Last Thursday my truck completely stopped starting. For roughly 2 weeks before that, it was idling slow and stalling, given the indication it was a few different problems. I have replaced the fuel pump, 2 cam shaft sensor, 2 crank shaft sensor, all 2 ignition ...
     
  • AutoMD Member
    AutoMD Member - 2006 Infiniti G35 - Engine - 7/2/2014
    Check Engine Light came on and car stated jerking.
    Miles: 117,300; I filled with Cheveron premium on way home. The check engine light came on and the car started jerking. Jerking sensation felt upon accelaration from a stop. Eased on the gas pedal and car then felt ok, but then pushed the gas some more and the ...
     
    0 answer
  • Cindy
    Cindy - 1996 Infiniti G20 - Engine - 6/3/2014
    WHAT CAP AM I MISSING????
    Ok so here the big problem; I'm missing some sort of "Cap" that's located near the left side of my engine. It's not engine oil cap nor the cap that you put anti freeze in. So what could the name of that cap i'm missing be??.. Please any info could be really helpful! ...
     
    0 answer
  • AutoMD Member
    AutoMD Member - 1991 Infiniti M30 - Engine - 6/2/2014
    What could be the causes for my 1991 Infiniti M30 to keep stalling out on me??
    I thought it might be the fuel system and replaced the fuel filter and pump. But it keeps happening. What could be other causes??
     
    • GT500Knights
      5/10/2014 GT500Knights
      First step is to check for any diagnostic codes. Those, even on your vehicle, may help us.

      When does the stalling occur? Describe as best you can when the stalling happens. Details to pay attention to are:
      a. Weather
      b. Hot or cold engine
      c. Speed
      d. Load - How far was your foot on the throttle?
      e. Incline - Were you driving uphill?
      f. Does this occur when you release the throttle?
      g. Maintenance history, along with anything noteworthy and recent
      h. Other problems that may possibly be related such as poor gas mileage or excessively high idle
      GT500Knights
      5/10/2014 AutoMD Member
      Speed where I live 35mph. my foot is just normal on the pedal. flat driving. no I am on the throttle driving normal and it sputters a few times then dies. I put it in N and withing 30 sec I can start it up again. Have had the car for 5 years do everything maint regularly every 3 mths put in a full tank of top notch gas. every 6 months 1 can of seafoam
    • CVO
      5/10/2014 CVO
      Is this vehicle has a check engine lights ?

      Infiniti is the top end vehicle made by Nissan Corporation that first came out in 1990.( Not sure ) if the diagnosing of the Infiniti check engine light codes is basically the same way like most Nissan vehicles.

      Nissan vehicles 1984-94 obd1 code retrieval. See this url instructions to extract the fault codes.

      http://www.extreme-check-engine-light-codes.com...
    • GT500Knights
      5/10/2014 GT500Knights
      Now, when you say top notch gas, do you mean to say you're running 91 octane rated gasoline? If your car is meant to run on 87 or 89, running the incorrect octane can cause engine damage. Particularly to spark plugs and injectors, as well as the intake and exhaust valves. Deposits can be left inside these parts. I would suggest running a can of seafoam through the intake vacuum. The seafoam bottle has instructors for that specific method. I understand you mentioned you had already used seafoam, but is that only in the gas tank? An upper cylinder cleaning might be in order. I would also take a look at the egr valve for functionality. It is supposed to operate during cruising. If it is allowing too much exhaust that might be an issue. Check exhaust back-pressure and hook up a vacuum gauge to see how the needle responds. You can find a guide online on how to read vacuum gauges.
      GT500Knights
      5/10/2014 AutoMD Member
      the erg valve has a little hose on the top when I took that off there was nothing. I know it is meant to be functional when moving but is there supposed to be a vacumn when I put my finger on the hose or not? if the car is in park?? I will do the sea foam as you mentioned too and see what happened. Someone also told me to change out the temp sensor??? Good idea or not?
    • GT500Knights
      5/10/2014 GT500Knights
      Temp sensor might be an issue. Hook a dvom to it to read ohms and measure it's resistance when it's cold and when it's hot. Specifications vary per car but once you get the readings I can provide a chart related to the ect sensor. As for the egr, no it should not have any vacuum to it when in park to check its functionality, attach a vacuum pump to the egr valve where you pulled off that vacuum hose. When you apply some vacuum it should cause some engine stumbling. If you apply a lot of vacuum it should cause the engine to stall out. This is a good thing.
    • AutoMD Member
      6/2/2014 AutoMD Member
      Maybe the mechanic didnt actually replace the fuel pump. I would have it checked out by another mechanic.
  • AutoMD Member
    AutoMD Member - 2003 Infiniti M45 - Engine - 6/2/2014
    Sudden jerking with no warning
    In Feb 2014 the dealership replaced the engine control module (ECM) on my car. The problem i was having was that over a period of time (very sporadic) the car would jerk; it was a type of jerking sensation that led me to believe that I had my foot in the wrong ...
     
    • Chevy doctor
      5/14/2014 Chevy doctor
      Several problems can cause a jerking sensation. Cylinder misfires like bad plugs, wires or coils can cause this. Even a faulty injector. It could be transmission related like your torque converter. Pay attention if it happens only of speeds above 40 or at a certain rpm under a load. Sounds like a cylinder misfire to me.
      Chevy doctor
      5/15/2014 AutoMD Member
      Thank you Chevy doctor, I will pay attention to that.
    • AutoMD Member
      6/2/2014 AutoMD Member
      fuel pump.
      AutoMD Member
      6/2/2014 AutoMD Member
      Thanks for chiming in. They (dealership) replaced the throttle chamber and had to replace the ECM again. The faulty throttle chamber caused the new ECM to go bad; I didn't pay for ECM replacement second time around. So far so good....
  • AutoMD Member
    AutoMD Member - 1999 Infiniti I30 - Engine - 5/31/2014
    My car has starting problem. Saturday it did not started.
    All light were good. Sinday morning it works fine. Since last 2 month i hear funny sound when i start early morning . Is this starter problem/
     
    • HouseCallAuto
      3/31/2014 HouseCallAuto
      More detail, too vague.
    • Pepe
      4/1/2014 Pepe
      Will the engine turn over at all? Be more specific.
    • AutoMD Member
      5/31/2014 AutoMD Member
      probably the starter, yes. I'm 57 and not a mechanic but I have learned a few things. Generally , a startig problem is either the battery or the starter. the battery is usually what it is. If it's good, then it could be the starter. If battery is new and still not staying charged then it's the alternator. so those three things.
  • AutoMD Member
    AutoMD Member - 1999 Infiniti I30 - Engine - 5/31/2014
    Saturday evening i could not start my car. gave ignition key, but no result. head lamp works fine, so no battery issue
    Since last two month, early morning during my first start, it give me high pitch huming sound. Sunday morning i tried to start and it works. This morning it starts and works fine. What is problem? Any starter issue or something else. Thanks
     
    • HouseCallAuto
      3/31/2014 HouseCallAuto
      Sounds like the starter
    • Pepe
      4/1/2014 Pepe
      Could be a bad starter or a bad connection from battery to the starter.
    • AutoMD Member
      5/31/2014 AutoMD Member
      check that fuel is coming out the fuel filter (disconnect one hose and then crank engine to see). A buddy helps. do this, if the engine is cranking but not starting and running on its own. If engine is not cranking (no movement) then yes, the starter.
  • AutoMD Member
    AutoMD Member - 2003 Infiniti M45 - Engine - 5/14/2014
    Sudden jerking with no warning
    In Feb 2014 the dealership replaced the engine control module (ECM) on my car. The problem i was having was that over a period of time (very sporadic) the car would jerk; it was a type of jerking sensation that led me to believe that I had my foot in the wrong ...
     
    0 answer
  • AutoMD Member
    AutoMD Member - 2003 Infiniti M45 - Engine - 5/14/2014
    Sudden jerking with no warning
    In Feb 2014 the dealership replaced the engine control module (ECM) on my car. The problem i was having was that over a period of time (very sporadic) the car would jerk; it was a type of jerking sensation that led me to believe that I had my foot in the wrong ...
     
    0 answer
  • AutoMD Member
    AutoMD Member - 1992 Infiniti G20 - Engine - 5/13/2014
    Idles rough, hard to start, rich fuel smell bad acceleration , small backfire on deceleration,
    Replaced fuel pump, maf sensor, and 3 injectors, car has new fuel filter. Could this be a bsd egr valve
     
    • GT500Knights
      5/13/2014 GT500Knights
      Your timing belt seems like it is stretched or has jumped time. That, or the belt tensioner is not holding tension. The back-fire is caused during deceleration when the crankshaft slows down, but the valve train continues to rotate for a split second and advances too far forward (picking up the slack on the belt).
  • AutoMD Member
    AutoMD Member - 2001 Infiniti I30 - Engine - 4/10/2014
    IDLE Air Control and ECM Computer
    Infiniti Dealer Service recommended to repairs of those two items, they want to $!,900.00 dollars they stated that this work will take them 4 hours. We want to know if this particular model had any electric problems and has been recall. Do you think the electric ...
     
    • HouseCallAuto
      4/10/2014 HouseCallAuto
      Crazy money, get another opinion. The dealer has no conscience and no heart. They are brutal with there estimates and none of the mechanics there would fix their own vehicle that way. I doubt that your car really even needs a computer but if it really does you can buy a used one on an online site for under $100 with shipping and an IAC is under $200 for the part. The I30 is identical to the Nissan Maxima as far as parts.
  • m30 man
    m30 man - 1992 Infiniti M30 - Engine - 1/6/2014
    Why does my car spit and sputter when I step on the gas pedel.
    the check engine lite comes on and off randomly ,and it runs ok then it spits. I cleaned off the mass air flow senser . that helped for awile then this spitting started .
     
    • Jimm
      1/6/2014 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
  • Bill
    Bill - 1995 Infiniti G20 - Engine - 12/29/2013
    Engine only within first 3 minutes,and has just occurred since temperature below 50 deg F, idle starts to rapidly go
    from 1200 to 400 RPM , change gear to neutral untill it evens out, It lasts for approximately 10-15 sec. then doesn't happen again as engine warms up.
     
    • HouseCallAuto
      12/29/2013 HouseCallAuto
      Confirm that your cooling system is full and if it is then your cause is likely a bad idle speed control on the throttle body.
      HouseCallAuto
      12/29/2013 Bill
      OK HCA, Yes cooling system is full and no leaks, I was leaning towards the ISC, thanks for your input
      HouseCallAuto
      12/29/2013 HouseCallAuto
      I didn't notice it was you Bill until I looked at the logo. Happy Holidays my friend
      HouseCallAuto
      1/18/2014 Bill
      Thanks HCA, By the way, you want to know what was the problem? After scratching my head and going back to basics I remembered a cause and effect scenario. This happened right after I had replaced motor mounts. In positioning engine to reinstall I must have split the Air Mass Meter boot which is between the throttle body intake and the MAF housing. Repaired leak and everything is back to normal. Sometimes it is something simple and a person can't see the forest through the trees.