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Jeep engine repair questions and answers

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  • csculver1022
    csculver1022 - 1988 Jeep Cherokee - Engine - 6 hours ago
    Why is my jeep miss firing
    1988 jeep Cherokee inline 6 with 297,xxx miles. I drove it for about three hours now stop one day shut it off started it later and it was miss firing. So I replaced all the parts I had under warranty; distributor cap, rotor button, spark plug wires, igintion coil, ...
     
    0 answer
  • tim
    tim - 1999 Jeep Cherokee - Engine - 12/17/2014
    If one of my spark plugs does not fire and i drive for on it for 100 hundred miles, does that throw off th piston timing
    The car's check engine light came on, had low RPMs, and had rough idle. I pulled off a spark plug wire to hear if the idling did not change. Put each wire back on and repeated the same procedure till I heard there was no change in idle. Found spark plug that was ...
     
    • Teddy B
      12/17/2014 Teddy B
      Flashing MIL Lamp is a Class A Cylinder Misfire that will ruin your exhaust converter

      Have to stop using it Now--that is why it is flashing

      Have to get rid of the misfires
      Teddy B
      12/17/2014 Teddy B
      Do a cylinder leak down test
      You may have bad valves
      Check for vacuum leaks
      May have a failed exhaust converter
      Misfire could come from many places
      Check for you obd codes
  • tim
    tim - 1999 Jeep Cherokee - Engine - 12/17/2014
    Why do i have a miss fire, i think i have three miss fires
    I changed all 6 spark plugs, i changed distributor cap and rotor.
     
    0 answer
  • snapper ranchero
    snapper ranchero - 1995 Jeep Wrangler (YJ) - Engine - 12/17/2014
    IAT ok still get code
    I've been getting a 23 code from my check engine light, and have tried replacing my IAT (MAT in my Haynes Manual) with another one pulled from salvage and a new one. I've also done the test ( IAT Sensor on the Jeep Wrangler YJs are easy to test and replace. ) and ...
     
    0 answer
  • snapper ranchero
    snapper ranchero - 1995 Jeep Wrangler (YJ) - Engine - 12/17/2014
    IAT OK, light still on
    I've been getting a 23 code from my check engine light, and have tried replacing my IAT (MAT in my Haynes Manual) with another one pulled from salvage and a new one. I've also done the test ( IAT Sensor on the Jeep Wrangler YJs are easy to test and replace. ) and ...
     
    0 answer
  • tim
    tim - 1999 Jeep Cherokee - Engine - 12/16/2014
    Rough idle problem, and rear end shimmy
    Check engine light was on with low RPMs, found bad plug. I change them all, check engine light now off and RPMs are up to somewhat normal. When driving rear end shimmies and loss of power when driving at 30 mph. Step on gas and it takes awhile for the power to catch ...
     
    0 answer
  • Richard Sisco
    Richard Sisco - 2006 Jeep Liberty - Engine - 12/16/2014
    Coolant Reservoir Overheats to boiling.
    New Radiator, New Hoses, New Thermostat changed out twice by certified mechanic. Problem still exists
     
    • Teddy B
      12/15/2014 Teddy B
      How about a heat gasket problem?

      How about a cracked head or block or failed water pump

      Could be timing issues,blocked exhaust contributing,maybe more
      than one problem
    • Nancy Long
      12/16/2014 Nancy Long
      Radiator coolant actually raises the boiling point of the water, allowing it to carry more heat away from the engine and that means a cooler running engine.
  • tim
    tim - 1999 Jeep Cherokee - Engine - 12/15/2014
    Check engine light, why
    Rough idle when in park, low RPMs at about 700, when going 60 mph RPMs are at 1200 to 1500. Does not stall
     
    • Teddy B
      12/15/2014 Teddy B
      Get your OBD Codes,Google them & read up on the
      possible code related issues
      Teddy B
      12/16/2014 tim
      changed plugs RPMs up to somewhat normal and check engine light off. Still rough idle and when driving rear end has a vibration
  • Walter
    Walter - 1994 Jeep Grand Cherokee - Engine - 12/14/2014
    What cause a jeep to stall
    The engine revs high the check engine light comes on then it shuts off
     
    • Teddy B
      12/14/2014 Teddy B
      You have a check light on

      Have you not retrieved your codes
      Googled them to see the possible problem

      Remember that is an OBD 1 Vehicle--may have to go to
      a shop that still has old scan tool software

      When & under what conditions does it rev high?

      Is it when you first start it cold in open loop
      or warm in closed loop?

      Try cleaning the AIC Solenoid at base of throttle body
  • Barnica314
    Barnica314 - 1997 Jeep Wrangler (TJ) - Engine - 12/13/2014
    I have replaced tps sensor, crank sensor, coil, and pick up coil along with performing a tune up. jp shuts down in 20
    After driving for about 10 miles (20mins) it falls flat on its face, back fires and won't pull its own self down road. I'm at a loss with this thing?? Any suggestions??
     
    0 answer
  • othello
    othello - 1987 Jeep Wrangler (YJ) - Engine - 12/11/2014
    Wrangler has rough idle. Changed everything I could think of.............no luck
     
    • howieh
      12/11/2014 howieh
      first what did you change and is it carbed or fuel injected
  • brokecollegekid
    brokecollegekid - 2002 Jeep Grand Cherokee - Engine - 12/10/2014
    Car kicks, won't accelerate quickly and 'sticks' at certain speeds.
    My car had been kicking for a while and the check engine light had came on so I took it to Advance Auto and the machine said my O2 sensors in Bank 2 were out, so we replaced them. And it fixed the problem for a few days and then the engine light came back on and I ...
     
    • ARVet
      12/10/2014 ARVet
      Check your TPS(Throttle Position Sensor) could be out of range and check your throttle body for carbon buildup that could be making the butterfly stick.
  • AutoMD Member
    AutoMD Member - 1999 Jeep Cherokee - Engine - 12/10/2014
    Brake pedal goes soft
    `bleed system-adjusted rear shoes-brakes high-after driving stop &go on job-brakes go soft. booster seems to be working-master not sticking-just keep losing pedal
     
    • ARVet
      12/10/2014 ARVet
      Check your rear wheel cylinders, could be a slight leak between the plunger and dust cover.
  • Tghoward
    Tghoward - 1996 Jeep Cherokee - Engine - 12/10/2014
    Jeep won't start after very cold morning and was completely emptied of oil!!! Help!!
    we are always pretty good about checking the oil and making sure the fluid levels of our cars are where they should be so the fact that it was completely out of oil was really odd...but we filled it up and we also had the battery tested and the battery is good. We ...
     
    • ARVet
      12/10/2014 ARVet
      I forget, does it have a coil pack or distributor? I'd be checking if you're getting spark. For the oil leaking you should have the rear main seal checked, 4.0L's are known for that.
  • phyllis ali
    phyllis ali - 2001 Jeep Grand Cherokee - Engine - 12/5/2014
    If fuel pump is faulty,how does it affect car performance
    Engine stops while driving or at a stop. What causes this?
     
    0 answer