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Jaguar engine repair questions and answers

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  • brian
    brian - 2007 Jaguar XK - Engine - 11/21/2014
    P1171 code
    Check engine light is on with code p1171
     
    0 answer
  • lbaker
    lbaker - 1987 Jaguar XJ6 - Engine - 10/23/2014
    Ignition wont turn over. It just clicks one time.
    Car came to an idol and turned off, tried to restart car started then shut back off. Tried again to restart again but it made a click sound one time, and nothing. Checked battery and cables all fine. Oil and coolant is fine. What could be the reason why the ...
     
    0 answer
  • lbaker
    lbaker - 1987 Jaguar XJ6 - Engine - 10/23/2014
    Ignition wont turn over. It just clicks one time.
    Car came to an idol and turned off, tried to restart car started then shut back off. Tried again to restart again but it made a click sound one time, and nothing. Checked battery and cables all fine. Oil and coolant is fine. What could be the reason why the ...
     
    0 answer
  • lbaker
    lbaker - 1987 Jaguar XJ6 - Engine - 10/23/2014
    Car cut off , tried to restart car it made a click sound. Nothing else, all lights are working. Checked battery conntion
    This was the first time. Wont turn over.
     
    0 answer
  • Lance
    Lance - 2004 Jaguar XJ8 - Engine - 10/18/2014
    I have a 2004 XJ8 and recently the fan continually runs even though the engine temp gauge never goes above the halfway p
    Noticed water under the car but the coolant level looks fine.
     
    • Jimm
      10/18/2014 Jimm
      Sounds like the cooling fan temperature control switch on the side of the radiator- or on the engine block is faulty. Try pulling a wire off of a visible temp switch. If the fan stops, that will be the switch you need to replace.

      Check the various on-line vendors; www.autopartswarehouse.com, www.RockAuto.com, www.partsgeek.com, www.radiatorparts.com, to list only a few.
  • Lance
    Lance - 2004 Jaguar XJ8 - Engine - 10/18/2014
    I have a 2004 XJ8 and recently the fan continually runs even though the engine temp gauge never goes above the halfway p
    Noticed water under the the car but the coolant level always checks fine.
     
    • Jimm
      10/18/2014 Jimm
      Sounds like the cooling fan temperature control switch on the side of the radiator- or on the engine block is faulty. Try pulling a wire off of a visible temp switch. If the fan stops, that will be the switch you need to replace.

      Check the various on-line vendors; www.autopartswarehouse.com, www.RockAuto.com, www.partsgeek.com, www.radiatorparts.com, to list only a few.
  • AutoMD Member
    AutoMD Member - 1995 Jaguar XJ6 - Engine - 10/12/2014
    I can not gain access to the trunk
    The transmitter is no longer working. I have used the black security key which opens all doors and the gas filler cap. I can hear a noise which is coming from the trunk lock when using the black security key. I have checked the fuses and the different cylenoids that ...
     
    0 answer
  • Sam
    Sam - 2000 Jaguar Vanden Plas - Engine - 10/7/2014
    Does the crankshaft pulley/damper on 2000 jaguar xj8 have split locking ring?
    Belt will not stay own. I noticed that the crankshaft pulley is not spinning but the bolt is. When I try to tighten the bolt on and put the belt on it just comes off again.
     
    0 answer
  • AutoMD Member
    AutoMD Member - 2006 Jaguar X-Type - Engine - 10/1/2014
    Fan wont stop running while shut off radiator
    just started yesterday after short trip less than a mile
     
    • Jaguar34
      10/1/2014 Jaguar34
      Sounds like the temp switch is getting tired. try pulling a wire off of a visable temp switch. If the fan stops, that will be the switch you need to replace!
  • AutoMD Member
    AutoMD Member - 2005 Jaguar X-Type - Engine - 10/1/2014
    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.
     
    • Jaguar34
      10/1/2014 Jaguar34
      The chip that shows up here and there has ben discussed on "Jag-Lovers" forum. It first appeared aS A SIMPLE RESISTOR THAT WAS ADDED TO THE (oops on the caps) inlet air temp sensor. This enrichens the mixture for more power, supposedly!!! However, the Oxygen sensors probably cancel any enrichment, which is what oxygen sensors do!!
      If you really want to try one, they are on Ebay. Now it looks like a microchip, but I think it only has a 10 cent resistor in it. I think they say it takes minutes to install, so I think it is still in the inlet temperature circuit.
      It's pretty hard to improve both HP and MPG. When an engine is peaked up it just needs a predetermined amount of fuel and Jaguar has a Dyno and some pros that worked out the mapping for fuel flow vs power demanded.
  • Capt. John
    Capt. John - 2002 Jaguar X-Type - Engine - 10/1/2014
    Heater not working, blowing no heat
    Have a 2002 Jag Type x. Can't get heat. Replaced radiator, and put in the correct antifreeze. Could there be a shut off valve the was used when the radiator was replaced?
     
    • Jaguar34
      10/1/2014 Jaguar34
      Read the answer I wrote for Shawn who had all heat. the components are the same.
  • AutoMD Member
    AutoMD Member - 1995 Jaguar XJ6 - Engine - 10/1/2014
    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
    • Jaguar34
      10/1/2014 Jaguar34
      The pump probably produces 60 # of pressure. the regulator drops it to the pressures stated above.
  • AutoMD Member
    AutoMD Member - 1986 Jaguar XJ6 - Engine - 10/1/2014
    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 ???
     
    • Jaguar34
      10/1/2014 Jaguar34
      The coil has 12 volts on one terminal. The other terminal is connected to the ignition amplifier mounted on the front of the intake manifold. There is a small harness that goes from the amplifier to the distributer.
      You can check the coil by disconnecting the amplifier and intermitantly grounding the coil's negative terminal. You can check the distributer sensor, a coil, with an ohm meter. I think it is about 600 ohms or so.
      Usually the fault seems to be a pooped out amplifier. Go to Jag-Lovers and check "bad amplifiers". The fix is to substitute a standard $10 GM ignition module for the one inside the amplifier case. This has been done by many XJ6 DIY's.
      Good luck
      Jaguar, in OKC
  • Capt. John
    Capt. John - 2002 Jaguar X-Type - Engine - 9/18/2014
    Heater problem, no heat coming from blower
    Have a 2002 Jag Type x. Can't get heat. Replaced radiator, and put in the correct antifreeze. Could there be a shut off valve the was used when the radiator was replaced?
     
    0 answer
  • ShawnPM
    ShawnPM - 2006 Jaguar S-Type - Engine - 8/29/2014
    A/C blowing hot air!!
    Dearest Auto MD, I have a 2006 Jag S-Type. My A/C does not blow cold air all the time. It will blow hot air mostly and then after a while sometimes it will begin to blow cold again. I have noticed that when the car has been sitting (turned off) in hot sun and I ...
     
    • ShawnPM
      8/29/2014 ShawnPM
      Dearest Auto MD,
      I have a 2006 Jag S-Type. My A/C does not blow cold air all the time. It will blow hot air mostly and then after a while sometimes it will begin to blow cold again. I have noticed that when the car has been sitting (turned off) in hot sun and I jump in, it usually will not ever get cold. Sometimes in that scenario it will kick out cold air after about 20 minutes. When the temperature outside is hot it usually doesn't work. However in the cool mornings when the temp is below about 72 and the car is sitting at idle after 10-20 minutes it will start getting cold air again. When I get cold air and don't turn the car off I maintain the cold air. So I have an intermittent problem.

      I have had it in the shop numerous times. First they recycled the refrigerant and made sure it was pure and at the proper capacity. No change. Then they replaced a high pressure switch. Still no change. Now they are telling me that they will have to dig into it deeper. Please help as they seem to just be guessing!

      I had it in a couple (about 3.5) years ago for about the same problem (memory kind of foggy). They ended up replacing two items that seemed to fix it. I am guessing on these part names and descriptions but hear I go. Part one was like a small black box about the size of two packs of cigarettes laying on top of one another. It seems to me that this box had some kind of electronics and was called something like a temperature control box or module. The second part was a much larger almost octopus looking item. It seemed to be a black plastic blow molded venting mechanism with some sort of air flaps. Both these items were spendy.

      Please help your assistance would be greatly appreciated.
      Sincerely,

      Dearest Auto MD,
      I have a 2006 Jag S-Type. My A/C does not blow cold air all the time. It will blow hot air mostly and then after a while sometimes it will begin to blow cold again. I have noticed that when the car has been sitting (turned off) in hot sun and I jump in, it usually will not ever get cold. Sometimes in that scenario it will kick out cold air after about 20 minutes. When the temperature outside is hot it usually doesn't work. However in the cool mornings when the temp is below about 72 and the car is sitting at idle after 10-20 minutes it will start getting cold air again. When I get cold air and don't turn the car off I maintain the cold air. So I have an intermittent problem.

      I have had it in the shop numerous times. First they recycled the refrigerant and made sure it was pure and at the proper capacity. No change. Then they replaced a high pressure switch. Still no change. Now they are telling me that they will have to dig into it deeper. Please help as they seem to just be guessing!

      I had it in a couple (about 3.5) years ago for about the same problem (memory kind of foggy). They ended up replacing two items that seemed to fix it. I am guessing on these part names and descriptions but hear I go. Part one was like a small black box about the size of two packs of cigarettes laying on top of one another. It seems to me that this box had some kind of electronics and was called something like a temperature control box or module. The second part was a much larger almost octopus looking item. It seemed to be a black plastic blow molded venting mechanism with some sort of air flaps. Both these items were spendy.

      Please help your assistance would be greatly appreciated.
      Sincerely,

      Dearest Auto MD,
      I have a 2006 Jag S-Type. My A/C does not blow cold air all the time. It will blow hot air mostly and then after a while sometimes it will begin to blow cold again. I have noticed that when the car has been sitting (turned off) in hot sun and I jump in, it usually will not ever get cold. Sometimes in that scenario it will kick out cold air after about 20 minutes. When the temperature outside is hot it usually doesn't work. However in the cool mornings when the temp is below about 72 and the car is sitting at idle after 10-20 minutes it will start getting cold air again. When I get cold air and don't turn the car off I maintain the cold air. So I have an intermittent problem.

      I have had it in the shop numerous times. First they recycled the refrigerant and made sure it was pure and at the proper capacity. No change. Then they replaced a high pressure switch. Still no change. Now they are telling me that they will have to dig into it deeper. Please help as they seem to just be guessing!

      I had it in a couple (about 3.5) years ago for about the same problem (memory kind of foggy). They ended up replacing two items that seemed to fix it. I am guessing on these part names and descriptions but hear I go. Part one was like a small black box about the size of two packs of cigarettes laying on top of one another. It seems to me that this box had some kind of electronics and was called something like a temperature control box or module. The second part was a much larger almost octopus lookin
      ShawnPM
      10/1/2014 Jaguar34
      My 2003 X type blows hot. (blew). To effect a quick fix in this OKLAHOMA heat I clamped the heater hose that goes to the heater core at the firewall. This hose is under the hood and has a vacuum activated valve in the hose.
      The real problem is either the water valve mentioned above or the electric vacuum valve found on the right side of the heat/cool unit . Maybe the water valve is stuck, or the diaphragm is leaking, or the vacuum line connecting the electric valve to the water valve is defecti