Auto Answers » Engine » Jeep

Jeep engine repair questions and answers

Post your Jeep engine question or share what you know by answering questions

2786 Questions
Sort by:
  • joe
    joe - 1993 Jeep Grand Cherokee - Engine - 11/22/2014
    Will the engine still turn over if the timing chain is no good
    IChanged the coil and the distributer assembly it turns over but will not start
     
    • GT500Knights
      11/22/2014 GT500Knights
      If the timing chain has snapped then there is no chance the engine will start. The timing chain is what synchronizes the crankshaft and camshaft. Most likely the ignition cool and distributor replacement will not fix this problem. One way you can check is to remove the oil fill cap, and shine a flashlight down the oil fill while an assistant cranks over the engine. Considering you can see down inside the valvetrain, if the rocker arms are moving your chain is still intact. Another test is to remove a spark plug wire from a spark plug, and insert a screwdriver into the spark plug boot. While your assistant is cranking over the engine, move the shaft of the screwdriver near an engine or body ground. Ensure your body is not touching the car, or you may experience quite a shock. If you see a spark, you DO have spark. Next test for fuel. You can do this with a fuel pressure gauge and measure fuel pressure from the test port. If you simply want to find out if fuel is reaching the cylinders, you can go to the exhaust pipe and smell for gasoline coming out (however this is not an accurate test, it simply proves fuel IS reaching the cylinders.

      Best of luck
  • joe
    joe - 1993 Jeep Grand Cherokee - Engine - 11/21/2014
    Will the engine still turn over if the timing chain is no good
    IChanged the coil and the distributer assembly it turns over but will not start
     
    0 answer
  • larry
    larry - 1992 Jeep Wrangler (YJ) - Engine - 11/17/2014
    Jeep won't idle under 2000 rpm and when warmed up it idles at 2500 rpm
    I replaced the tb senor aic senor and the map senor also. Put new spark plugs in and cleaned the tb with injector cleaner and replaced and air hoses that were cracked or dry rotted used sea foam new o rings on the Injectors. New tb gaskets. Now I'm lost please help
     
    0 answer
  • larry
    larry - 1992 Jeep Wrangler (YJ) - Engine - 11/17/2014
    Jeep won't idel below 2 grand.
    I replsced the tps senor. And map senor. And the aic senor. Cleaned the throttle body. Replaced all the rubber air hoses that were cracked or dry rotted. Used carb and injector clraner. Changed the spark plugs new ones.and used sea foam in gas tank. Still no luck ...
     
    0 answer
  • dave
    dave - 1997 Jeep Grand Cherokee - Engine - 11/16/2014
    Would the coolant sensor on the over flow tank cause the spit and spudder on a 1997 jeep grand cherokee laredo 5.2 l 4x4
    The problem started after I put some bad gas in my tank and after i put some fuel injection cleaner no more problem
     
    0 answer
  • johnchurch
    johnchurch - 2002 Jeep Liberty - Engine - 11/16/2014
    What does it mean when the O/D OFF light comes on the dash?
    181,000 just came on while car was idling
     
    • Bill
      11/16/2014 Bill
      means transmission overdrive not engaged and switch off or it is malfunctioning
  • dave
     
    • CVO
      11/16/2014 CVO
      A. Spits and sputters are the symptoms of gas starving for the engine. Check the fuel system pressure and if it isn't in the criteria, replace the fuel pump and filter.

      FUEL SYSTEM PRESSURE
      1997 Jeep Grand Cherokee 2WD 5.2L MFI 8cyl
      The Fuel System Pressure


      44-54 PSI (Pounds per Square Inch)Position the ignition switch and the A/C system in the off position. Install a fuel pressure gauge to the vehicles fuel rail or fuel pressure test port.Confirm that no leaks are present, and visually verify the PSI reading on the gauge with the ignition in the on position.

      B. The check engine light doesn't have to be ON to store a fault code.

      Check the vehicle for fault codes to see if there are any sensors were involved to the malfunction of the engine.

      1.Local auto parts stores such as Autozone ( not in California) or Advance Auto parts or Pep Boys will scan and retrieve any diagnostic trouble codes ( dtc ) stored in the powertrain control module for free of charge..

      2. Amazon.com has the code reader for less than $ .00 dollars + shipping
      Autel MaxiScan MS300 CAN Diagnostic Scan Tool for OBDII Vehicles

      3.Re-post the dtc's in here " answer question " for further assistance.

      Note: we need the dtc's to identify the sensor, there are a dozen different ELECTRONIC sensors to operate the car.

      Visit this site and see all the different sensor definitions.

      Powertrain Control Module (PCM)
      Throttle Position (TP) sensor
      Mass Air Flow (MAF) sensor
      Intake Air Temperature (IAT) sensor
      Idle Air Control (IAC) valve
      Engine Coolant Temperature (ECT)
      Heated Oxygen Sensor (HO2S)
      Camshaft Position (CMP) sensor
      Knock Sensor (KS)
      Vehicle Speed Sensor (VSS)
      Crankshaft Position (CKP) sensor

      www.freeautomechanic.com
    • angeltrieber
      11/16/2014 angeltrieber
      my brother had a car do that he said it was the fuel pump every time it got below a half a tank of gas it would spit and sputter my husband went out grabbed a spark plug wire and it fell apart in his hand he put it back together and the spit and sputter stopped
      angeltrieber
      11/16/2014 CVO
      SHARING KNOWLEDGE IS POWER, THANKS.
  • justin
    justin - 1989 Jeep Cherokee - Engine - 11/13/2014
    Antifreeze leek when I'd idoling?
    It seems to leek out a bunch of antifreeze when the radiator is full and sitting still with the engine running! When I drive it is perfectly fine but once again when its at a stand still it over heats and leaks?
     
    0 answer
  • marcell33
    marcell33 - 2004 Jeep Grand Cherokee - Engine - 11/12/2014
    Rough low idle and voltage drop at stop and idle
    I get a rough low idle and voltage drops when I come to a stop and at idle. Almost wants to stall out and has before couple of times. When I reset by disconnecting the battery it runs good for a couple of days then acts up again. It seems to have ran better when it ...
     
    0 answer
  • marcell33
    marcell33 - 2004 Jeep Grand Cherokee - Engine - 11/12/2014
    Rough idle and voltage drop at stop or at idle
    I get a rough low idle and voltage drops when I come to a stop and at idle. Almost wants to stall out and has before couple of times. When I reset by disconnecting the battery it runs good for a couple of days then acts up again. It seems to have ran better when it ...
     
    0 answer
  • joseph
    joseph - 2005 Jeep Grand Cherokee - Engine - 11/11/2014
    What can it be? Alternator battery? Car starts. Rythmic noise and car idles at very low rpms and engine shakes
    142,000 miles car was unable to maitain hwy speeds. It eventually died but an hour later it was worked and was run in idle. check engine light is on. battery light was on initially when car was on hwy and losing power. weird smell initially when car began to lose ...
     
    0 answer
  • joseph
    joseph - 2005 Jeep Grand Cherokee - Engine - 11/11/2014
    Car starts. Rythmic noise from alternator belts and car idles at very low rpms and engine shakes.
    142,000 miles car was unable to maitain hwy speeds. It eventually died but an hour later it was worked and was run in idle. check engine light is on. battery light was on initially when car was on hwy and losing power. weird smell initially when car began to lose ...
     
    0 answer
  • angeltrieber
    angeltrieber - 1994 Jeep Grand Cherokee - Engine - 11/10/2014
    Jeep won't start when is cold few minutes playing with the key I hear clicking in the fuse box under the hood
    a few minutes later I can hear the fuel pump start to thump after a few minutes of that I can hear the fuel pump kick in when the motor is hot or warm it starts with no problem
     
    • jdl
      11/10/2014 jdl
      There could be something wrong with ignition switch.
      jdl
      11/10/2014 angeltrieber
      but if it was that it would do it when it's warm also
      jdl
      11/11/2014 angeltrieber
      also have to say the jeep cranks over but like I said have to bump the key sometimes to get the fuses to click
      jdl
      11/11/2014 jdl
      [url= http://postimg.org/image/4x3fllaoz/][img] http://s21.postimg.org/.../img][/url]

      Check voltage and ground circuit at fuel pump relay. Click on the link. When problem is ongoing, when you first turn on key no crank, can you hear the fuel pump prime for a couple seconds?
  • larry
    larry - 2008 Jeep Liberty - Engine - 11/10/2014
    I need to get the reservoir off to change the water pump and cannot figure out what the bolt size is 6mm,7mm Or What?
    The coolant and washer fluid reservoir is over the entire cowl which has to come off to access the water pump.
     
    0 answer
  • ratrider955
    ratrider955 - 1995 Jeep Grand Cherokee - Engine - 11/7/2014
    Engine won't turn over
    For a couple of weeks, when starting the car, the starter drags like the battery is getting low, but when checked with a VOM the battery shows a full charge. Finally the car refused to turn over at all. Checked battery voltage at the battery, at the terminal clamps ...
     
    • jdl
      11/7/2014 jdl
      Use the digital multimeter across battery posts, have helper turn key to to crank, how far does the voltage drop? Shouldn't drop below 9.6 volts.