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Jaguar engine repair questions and answers

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  • AutoMD Member
    AutoMD Member - 2001 Jaguar S-Type - Engine - 7/17/2014
    Why does the car start in the am but after driving it for a little while ,I then stop for a few minutes and it does not
    mileage:205 000.,this happens anytime but mostly after stopping for a little while.only happens after stopping.it occurs all the time.it started a year ago.no lights are on only a beeping sound
     
    0 answer
  • AutoMD Member
    AutoMD Member - 1995 Jaguar XJ6 - Engine - 6/29/2014
    How much pressure should the fuel pump have?
    The engine runs sluggish and does not idle smoothly
     
    • jdl
      6/29/2014 jdl
      My info says 43 psi non-turbo. With turbo, add about 10 psi.
      jdl
      6/30/2014 AutoMD Member
      I purchase a pump that is supposed to be the correct pump this vehicle that is 70 to 90 psi. Your information says 43 psi non-turbo. Please help, i don't understand. Thanks
      jdl
      6/30/2014 AutoMD Member
      The information on this vehicle is fuel pressure at idle, vacuum hose attached, vacuum hose detached, fuel system hold pressure, and fuel pressure maximum
      jdl
      7/1/2014 jdl
      All I can tell you is what my database showed. I even looked up the fuel pump in an online partsbook, it said 43.5 psi. When I check fuel pressure, I check with key on engine off. Depending on how much vacuum is applied to the pressure regulator, the pressure can vary between 35--45 psi, according to my database.

      You could talk to the service department at your local dealership, see if they can give you all the specs you need?
      jdl
      7/1/2014 AutoMD Member
      Thank you very much for the information
  • AutoMD Member
    AutoMD Member - 2006 Jaguar X-Type - Engine - 6/20/2014
    Fan wont stop running while shut off radiator
    just started yesterday after short trip less than a mile
     
    0 answer
  • AutoMD Member
    AutoMD Member - 1986 Jaguar XJ6 - Engine - 6/14/2014
    No spark at all ( not at coil , plugs ,distributor or anywhere ) what can I do to correct the problem
    Car has 170000 miles car was running before , died on me one day and it would not start up again check it out find out no spark , have power at coil ???
     
    0 answer
  • AutoMD Member
    AutoMD Member - 1988 Jaguar XJS - Engine - 6/8/2014
    Why does temperature gauge go to highest level (H) after only 5 miles of driving
    New water pump installed only ten days and ten miles ago
     
    0 answer
  • AutoMD Member
    AutoMD Member - 1988 Jaguar XJS - Engine - 6/8/2014
    Engine coolant temperature gauge goes to highest level (H) after 5 miles of driving.Why??
    This is first time driving car after new water pump was installed. Is it a faulty gauge, sensor, or more serious problem??
     
    0 answer
  • AutoMD Member
    AutoMD Member - 1988 Jaguar XJS - Engine - 6/8/2014
    Engine coolant temperature gauge goes to highest level (H) after 5 miles of driving.Why??
    This is first time driving car after new water pump was installed. Is it a faulty gauge, sensor, or more serious problem??
     
    0 answer
  • AutoMD Member
    AutoMD Member - 2003 Jaguar S-Type - Engine - 5/21/2014
    I started slowing down when driving and the engine starts to sputter until i stop. no there was no error message.
    when I restart the engine idels well and I can resume my journey until the problem starts again.
     
    0 answer
  • AutoMD Member
    AutoMD Member - 1980 Jaguar XJ6 - Engine - 5/11/2014
    My engine backfires alot
    on slow acceleration, or going up a hill
     
    • Jimm
      5/11/2014 Jimm
      Most likely the issue is engine timing-related; such as worn / streched timing chain or faulty tensioner. How many miles are on the vehicle and in particular - the engine?

      For your vehicle to run effectively, there are a number of parts in your engine that need to be in proper working order. A couple of these include the timing chain and the timing chain tensioner. The timing chain tensioner is what makes sure that the timing chain is in consistent, efficient working order at all times. The timing chain tensioner also stands to put tension on the timing chain. If the timing chain slipped from the tensioner being damaged or excessively worn - then it would cause the motor to be out of time, which would then lead to backfire, be hard to start and possibly not even run at all. In addition, if it isn't working properly due to wear and tear or other damaging issues, it the systems of chains and gears, which connect the timing chain to the camshaft or crankshaft won't work efficiently. Now, in order to tell if your timing chain tensioner is bad you aren't just going to remove it and have a look. It is one of the most difficult pieces to remove under the hood and isn't on the top of anyone's list to just remove and see if it's okay or if it's worn.

      Therefore, you must have good ears and listen for a few problems that may occur when the timing chain tensioner is cracked, worn, or torn for some reason. Listen to see if you hear a rattling noise when you start the vehicle or even accelerate as this could mean that there is no much tension placed on the tensioner pulley or that it is possibly cracked. Sometimes the tensioner can leak oil onto the camshaft or crankshaft from being cracked so oil leaks are a good thing to be on the lookout for. When changing gears, listen for a squeak or screech as this could mean the tensioner is under too much pressure. The tensioner could be worn and needs to be replaced.

      There are other possibilities; faulty spark plugs, faulty spark plug wires, low / poor fuel pressure, clogged fuel filter.
  • AutoMD Member
    AutoMD Member - 2005 Jaguar X-Type - Engine - 4/15/2014
    Looking for best performance chip
    can anyone steer me in the direction of a performance chip that will give me maximum mpg and horsepower. please respond if you are certain of the chips performance and reliability.
     
    0 answer
  • William Rigdon
    William Rigdon - 1982 Jaguar XJS - Engine - 4/12/2014
    Intermittent problem with no electrical to the starter when turning on the ignition
    Approx. 90,000 Kilometers (Canadian import). Replaced the starter relay with new, no change. Car starts properly on about 8 out of 10 attempts. Does not seem to make any difference if it is cold or hot or if it has just been driven or not. I drive the car about ...
     
    • alex
      4/12/2014 alex
      it can be bypassed but stock is always better. you will need a second person take a voltmeter go to the small post of starter solenoid and ground. have a friend bump the starer you should have 12 volts on the post every time. that post is where you would wire a push button to bypass key start. if you are missing power have your friend wiggle the shiftier if this makes it go you have a problem with your neutral safety switch the switch should be adjusted or replaced. if it doesn't find your starter relay. check for power on post 30 of the relay if you have power every time and it doesn't start its the relay. i am pretty certain you will find it's in your neutral safety switch.
  • AutoMD Member
    AutoMD Member - 1999 Jaguar S-Type - Engine - 4/10/2014
    My relays stays on in the trunk fuse panel when the ignition is totally shut off I'd be gratefull for any diagnoses
    All tips would be great I'm been a mechanic for a very long time but this one stumped me so any or all suggestions would benefit Thankyou
     
    • HouseCallAuto
      4/9/2014 HouseCallAuto
      Which relays are staying on if you can id them? You did not say but i assume that the battery is going dead because of this?
      HouseCallAuto
      4/11/2014 AutoMD Member
      Power switch 1 , 2 , 3 , 4 pls direct me lol thanks
    • AutoMD Member
      4/10/2014 AutoMD Member
      There are five in a row two outer ones four they are the same power controls 1,2 3and 4 staying on when ignition is off I'll pull the relay and they all go click so something is powering them up when car is off I don't know if it would be ignition or alarm or a short in the system really hard to isolate thanks
    • AutoMD Member
      4/10/2014 AutoMD Member
      The four relays are the switched power relay 1 2,3and four think I put the question in the rt spot lol staying on when ignition is off thank you for any insight
  • AutoMD Member
    AutoMD Member - 2003 Jaguar S-Type - Engine - 3/24/2014
    Idle too low it cuts off
    it started after I replaced the tps. Now the vehicle idIles too low when vehicle reaches hot temperature. I have too keep my foot on the accelerator.
     
    • Jimm
      3/24/2014 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.
  • AutoMD Member
    AutoMD Member - 2003 Jaguar S-Type - Engine - 3/23/2014
    After replacing tps my rpms are too lowIt
    the problem started after replacing the tps. now the vehicles idles too low after it gets hot. I have to keep my foot on the accelerator or it will cut off,
     
    • HouseCallAuto
      3/23/2014 HouseCallAuto
      You need a scan tool that can read data and fault codes. Why did you replace the tps? Did a fault code direct you to that or you just figured it would help by replacing it?
  • AutoMD Member
    AutoMD Member - 2000 Jaguar S-Type - Engine - 3/14/2014
    How do I charge my air conditioner?
    No other details necessary
     
    • HouseCallAuto
      3/14/2014 HouseCallAuto
      Buy a kit at the auto parts store and follow the instructions. Beyond that cannot be conveyed here safely. I do not endorse any DIY air conditioner recharges for non-professionals. can be dangerous.
 
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