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Jeep engine repair questions and answers

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  • AutoMD Member
    AutoMD Member - 1994 Jeep Cherokee - Engine - 7 hours ago
    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.
  • Bert
    Bert - 2005 Jeep Grand Cherokee - Engine - 7/6/2014
    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 ...
     
    0 answer
  • 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
  • AutoMD Member
    AutoMD Member - 2003 Jeep Grand Cherokee - Engine - 6/25/2014
    Why does my car die while driving down the road?
    it dies while im drivin and wont restart untill i let it sit for at least 20 minutes
     
    • AutoMD Member
      6/25/2014 AutoMD Member
      We have the same problem. Let us know if you find anything out, please.
  • AutoMD Member
    AutoMD Member - 1997 Jeep Grand Cherokee - Engine - 6/25/2014
    Why does my car turn off when i start it?
    when idle car sometimes turns. when i stop sometimes turns off
     
    • AutoMD Member
      6/25/2014 AutoMD Member
      Unfortunately this is not an answer but a response to the same problem. We have the same model and year jeep. Only ours will die while driving down the road within one to two miles, going around corners, slowing down to take a turn, and the like. We have to let it sit for a couple minutes before we can attempt to start it again. Sometimes it won't start after its' sat for a couple minutes, and when you try to start it, it sounds like it's out of gas. It's not out of gas. It might take 3 or 4 attempts. When the vehicle does crank it can run perfect for the rest of the day. Or you're praying just to get home. We've replaced the fuel pump, map sensor(twice), crank shaft position sensor, alternator, ignition module, battery, everything that pops up on their diagnostic computer tests. There's got to be a reason for this behavior and a fix for it. If anyone has any ideas, please relay them to us. All of us.
      AutoMD Member
      6/26/2014 CVO
      Spray some aerosol starting fluid into the throttle (CAUTION: Starting Fluid is Extremely Flammable!). Then crank the engine. If the engine starts until the fluid runs out, then you do NOT have an ignition problem.
      The fuel pump was replaced, did you replace the fuel pump relay too.
  • AutoMD Member
    AutoMD Member - 2000 Jeep Grand Cherokee - Engine - 6/24/2014
    Why does my car idle low then die only when at an uphill stop light?
    The car runs fine on level streets, but when I go uphill and stop at the traffic light, it dies unless I have one foot on the brake and one on the gas to keep it idling.
     
    0 answer
  • AutoMD Member
    AutoMD Member - 2008 Jeep Wrangler (JK) - Engine - 6/24/2014
    What would cause repeated ignition coil failure on #1 Cylinder?
    Have replaced ignition coil pack 3 times. All times bad position was the same, #1 cylinder. Plug not fouled.
     
    0 answer
  • Welder95
    Welder95 - 2002 Jeep Wrangler (TJ) - Engine - 6/21/2014
    Coolant disappearing
    i have checked everything i can imagine, my coolant is disappearing, and i have a long trip to Florida coming up next weekend any assistance would be great, please and thank you.
     
    • CVO
      6/21/2014 CVO
      1. Check the engine oil to see if the coolant was mixed with it, a brown or chocolate color is an indication of the problem

      2. Perform a cooling system / radiator pressure test when the engine is cold - as a first step to locate the leak.
      Obtain a loaner tool / free radiator pressure tester from the local auto parts stores such as Autozone, O'Reilly, NAPA, Advance Auto, or PepBoys. Follow their instructions and pump it to an adequate air pressure 12 -15 psi or the pressure rating listed on the radiator or reservoir cap. Observe the leaks and perform the repair.
      Note: do not over pressurize beyond the pressure allowed by the radiator cap, then test the radiator cap as well.
  • AutoMD Member
    AutoMD Member - 2006 Jeep Commander - Engine - 6/17/2014
    Why my jeep wont start after driving through water?
    I have changed the oil. tried to start it but it just clicks.
     
    • AutoMD Member
      6/17/2014 AutoMD Member
      depends how deep was said water?
    • AutoMD Member
      6/17/2014 AutoMD Member
      what repair should I need for the same problem? mechanical or electrical?
    • AutoMD Member
      6/17/2014 AutoMD Member
      Will mechanical repair good for my sedan which wont start after I drove it through the water ,how about the electrical ? Is there no need to change the engine.?
      The shop mechanic has advised that I will trade in my original engine with another so to lessen my expenses. Is this a moral or honest advice?
 
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