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Jeep engine repair questions and answers

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  • AutoMD Member
    AutoMD Member - 2000 Jeep Grand Cherokee - Engine - 7/29/2014
    When I start the engine it races out of control
    I tore apart the engine cause someone said I could pull the busted piston from the bottom and it was almost impossible so I took off the head and after replacing the piston put everything back together. When I started the engine it raced out of control. Is this ...
     
    0 answer
  • Bert
    Bert - 2005 Jeep Grand Cherokee - Engine - 7/25/2014
    Engine sounds rough when I slightly accelerate gas pedal while cruising
    My engine seems to make a rough sound when I accelerate just a little while driving at normal speeds. It does not do it at while in park, at take off, or at higher speeds. Only with slight press of gas pedal during normal motion. I don't know where to start to look ...
     
    • Bert
      7/25/2014 Bert
      Update: turns out the serpentine belt was incorrect causing the power steering pump to run backwards. After a while the noise started up for some reason. Fixed now
  • AutoMD Member
    AutoMD Member - 2005 Jeep Liberty - Engine - 7/22/2014
    What is wrong with my 2005 Jeep liberty??
    I have a 2005 Jeep liberty and when i start it its hard to start and you have to push the pedal to get it started and you can smell gasoline very badly. It will stay on but it shakes really bad and doesn't sound good either. I plan on taking it to a mechanic I just ...
     
    0 answer
  • AutoMD Member
    AutoMD Member - 2005 Jeep Liberty - Engine - 7/22/2014
    What is wrong with my 2005 Jeep liberty??
    I have a 2005 Jeep liberty and when i start it its hard to start and you have to push the pedal to get it started and you can smell gasoline very badly. It will stay on but it shakes really bad and doesn't sound good either. I plan on taking it to a mechanic I just ...
     
    0 answer
  • ajay
    ajay - 2005 Jeep Liberty - Engine - 7/22/2014
    Can someone help me find a solution to starting issue with Jeep Liberty 2006 ?
    I have not used or started the vehicle in a month was parked in my drive way. I noticed that it had a flat tire and the worst was the valve is broken. I tried to start it won't start, no display of bad battery or anything. Tried using the jump starter but still ...
     
    • jdl
      7/22/2014 jdl
      No dash lites no crank, nothing? I'd have to make sure the battery has a full charge. If you have a digital multimeter, we can help you do some testing. Some of the national brand auto stores will check the battery for you, if you take it to them. Some auto stores will make house calls if you live in an area they serve.
      jdl
      7/22/2014 ajay
      Dash light works,
      jdl
      7/23/2014 jdl
      I'd have to do some testing, like I suggested. If the starter motor won't crank, I'd check the circuits at the starter motor, voltage and ground.

      You have to be sure battery and battery connections are in good shape. Otherwise we can't do any testing. The generic spec for a full charge on battery is around 12.6 volts.
  • carypowers
    carypowers - 2008 Jeep Grand Cherokee - Engine - 7/20/2014
    Need Advice About Additional Repairs
    Mechanic said cracked head, said both heads have to be done or would not run correctly. I went along to this point where I met him and said NO MORE.. the cost was agreed to not exceed 1700.00 BUT IT HAS.. The car is now and he says I owe another 800.00 for (his ...
     
    • Jimm
      7/20/2014 Jimm
      Have another trusted repair shop inspect the vehicle to provide an estimate. Also, be ware of any repair shop that will not allow you - the vehicle owner; to examine the parts, examine any parts invoices - or obtain detail.

      Remember, this is your vehicle and your money being targeted - you have the option to refuse the work quoted and to take the vehicle elsewhere.
  • AutoMD Member
    AutoMD Member - 2006 Jeep Liberty - Engine - 7/14/2014
    Check engine warning & GASCAP warning showing. Dealership says don't worry about either warning.
    91000 kms on vehicle. Good running except for this problem. Nothing else except regular maintenance. Check engine light appeared about a month ago. Dealership performed diagnostic test & determined the sensor needs replacing. They said don't replace the sensor until ...
     
    0 answer
  • AutoMD Member
    AutoMD Member - 1994 Jeep Cherokee - Engine - 7/13/2014
    At last barrier to two buttons to free the ign. key cyl. lock (Saginaw). How do I loose "bellcase plate" to access them
    This plastic part is screwed to the turn/wiper lever and strikes the horn contact depressed thru the tube mounted thru the steering wheel hub. There are 184,700 miles on her, just beginning the second half of her life. The ignition cylinder is working only in ...
     
    0 answer
  • AutoMD Member
    AutoMD Member - 1996 Jeep Cherokee - Engine - 7/12/2014
    To start my jeep I crawl under it and use a screwdriver to touch the contact points on cellinoid
    Someone always has to be in the driver's seat turning the key at the same time. Battery is strong. Starter is new (after market)
     
    • jdl
      6/26/2014 jdl
      [url= http://postimg.org/image/qz03l922n/][img] http://s27.postimg.org/qz03l922n/jeep_starter_1.jpg[/img][/url]

      Did you check applicable fuses? Did you check voltage, anywhere? Is this an automatic? What about checking voltage circuits at the relay? The coil/control side of relay, the bottom wire, is ground for relay controlled through neutral switch on an automatic. It's possible your missing voltage or ground at the starter relay.
    • FloridaTech
      7/12/2014 FloridaTech
      A defective starter solenoid could be the cause of your problem. Aftermarket starters are hit and miss. See if you can warranty the starter and if that will fix the problem.
  • AutoMD Member
    AutoMD Member - 1992 Jeep Cherokee - Engine - 7/12/2014
    I recently replaced the valve cover gasket and since then i can get the engine to turnover but not start
    I have replace the spark plugs and wires distribtator cap crankshaft censor coil putting a new throttle cable but still not starting
     
    • FloridaTech
      7/12/2014 FloridaTech
      A lot as been replaced so were going to go step by step.

      First, try holding the gas pedal down while starting it, gas has probably flooded into the cylinders and you'll need to clear the extra gas out. Check that throttle cable for proper operation.

      Where did you get the parts from? Jeep Cherokee XJs are known for rejecting aftermarket parts such as the crankshaft position sensor. Check to make sure it's good and even try starting with the old sensor. A recommendation is to get the Mopar part.

      Check the placement of the distributor cap and rotor. Make sure timing is correct. If not the Jeep will not start. Make sure the coil is producing power.

      Being a Jeep Cherokee owner, the best bet is to join a Jeep forum such as cherokeeforum.com where the guys and gals there breathe cherokees and will be happy to get you back on the road.
  • AutoMD Member
    AutoMD Member - 2005 Jeep Liberty - Engine - 7/12/2014
    Faulty fuel pump caused by oil change?
    Today, I took my 2005 Jeep Liberty Limited 6 cylinder in for an oil change and tire rotation at a local Pep Boys. They also did an AC check as it was blowing warm. After picking up the vehicle and driving it for a moment, the car was shaking when I got to a nearby ...
     
    • FloridaTech
      7/12/2014 FloridaTech
      The services you had performed would not relate to your fuel pump issue. Fuel pumps can go bad without warning, but I'd have a second opinion done by another shop (preferably a trusted independent or the dealer) and make sure that the fuel filter is not clogged to the point of causing low fuel pressure. Also $1100 seems a bit high for a remove and replace of a fuel pump.
  • AutoMD Member
    AutoMD Member - 2005 Jeep Liberty - Engine - 7/5/2014
    Faulty fuel pump caused by oil change?
    Today, I took my 2005 Jeep Liberty Limited 6 cylinder in for an oil change and tire rotation at a local Pep Boys. They also did an AC check as it was blowing warm. After picking up the vehicle and driving it for a moment, the car was shaking when I got to a nearby ...
     
    0 answer
  • Jesse
    Jesse - 1999 Jeep Cherokee - Engine - 7/5/2014
    Chugging on highway @ 110Km/hour
    -350k+km on vehicle -Car passed E-test fine. Happens when hot, doing 110km on highway in summertime, but doesn't do this at all during the winter. Check engine light turns on during this, but turns off afterwards. When overheating the car feels like it is ...
     
    • Jimm
      7/5/2014 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
  • Jesse
    Jesse - 1999 Jeep Cherokee - Engine - 7/5/2014
    Hesitation on highway doing 110km/hour
    -350k+km on vehicle -Car passed E-test fine. Happens when hot, doing 110km on highway in summertime, but doesn't do this at all during the winter. Check engine light turns on during this, but turns off afterwards. When overheating the car feels like it is ...
     
    • Jimm
      7/5/2014 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
      Jimm
      7/5/2014 Jesse
      Thanks a lot Jimm, really helpful for me. I will be checking the vehicle thoroughly with the list provided.
  • AutoMD Member
    AutoMD Member - 1999 Jeep Cherokee - Engine - 6/29/2014
    Why do I have oil in the radiator fluid?
    About a half a teaspoon per gal..
     
    • CVO
      6/29/2014 CVO
      The transmission oil leaked via the trans oil cooler this would mean that the radiator has a crack in the tanks along the side where the coils of the oil cooler runs through it,(this only apply to vehicles that have an integral trans oil cooler.
      Check also your automatic transmission to see if the fluid has been contaminated with coolant.Flush the contaminated fluid before $$$$ goes for a new one.
      CVO
      6/29/2014 AutoMD Member
      Not tranny oil but motor oil that I'm finding collecting in the bottom of the resavour bottle. Radiator is new as of 4mo. ago.
      CVO
      6/29/2014 CVO
 
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