Cooling The Jaguar XJS Ol' Tex: The Basics-Part 2: Air/Fuel Ratio As A Cause Of Overheating.

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  • Опубликовано: 18 дек 2024

Комментарии • 50

  • @patrickschoonmaker3239
    @patrickschoonmaker3239 2 года назад +1

    Nice video great tip on using the engine bar to raise compressor! Keep doing what your doing. Thanks again

  • @cosgraham534
    @cosgraham534 2 года назад +2

    Thanks for this Bob - I am now confident enough to refurbish my injectors, hoses and paint the fuel rail (I have even bought the paint you recommended). I just need my car back from the shop where I am getting an aluminium radiator and twin electric fans fitted - to help with my own car’s hot running...

  • @georgepalmer7002
    @georgepalmer7002 2 года назад +1

    Great program

  • @alanwilliams8078
    @alanwilliams8078 2 года назад +2

    I have had a similar issue with a pre-HE Vanden Plas, it turned out to be the thermostats, someone had fitted incorrect ones that did not have the feet to block off the internal bypass once the engine warmed up. I replaced the thermostats and the temperature dropped to normal and stayed stable. I later found that a major parts reseller had the incorrect listing in the catalogue used by the counter staff.

    • @lebojay
      @lebojay 2 года назад +1

      This is a common story with these cars. The correct thermostats are hard to find. Gates brand works for sure. Many other thermostats listed as correct are in fact not correct.

  • @lebojay
    @lebojay 2 года назад +3

    I’m having the exact same problem and am following all your attempts right along with you! Checking fuel pressures and injection operation was on my to do list but now i will check those things sooner rather than later. Thanks!!

    • @alecnajarian
      @alecnajarian Год назад

      Hey did you ever figure it out? I'm in the same situation lol

  • @contributor7219
    @contributor7219 2 года назад +3

    I use two ear clamps on the fuel lines of our 5.3 cars, including the injectors and fuel rail. The purists will hate it, but they are neat, super easy to remove when you need to and they never leak. Years ago I made a custom tool to be able to install them on the injectors whilst still on the car, nowadays though you can even get a pair of crimping pliers that lets you do that too.
    Hope you get to the bottom of the hot running issue soon - always a scary proposition with these engines.

  • @paulskinner4613
    @paulskinner4613 2 года назад +1

    Just a quick question, have you verified your temps with a thermocouple? The XJS water temp sending unit fails in such a way that they begin to over-report temps. This usually gets worse fairly quickly though eventually reporting correct temps as close to overheating.

  • @scottpsychodub6385
    @scottpsychodub6385 2 года назад +2

    Another interesting and informative video, enjoying these troubleshooting episodes as well as the various other topics you cover. 👍

  • @lebojay
    @lebojay 2 года назад +1

    My radiator caps aren’t sealing. That can’t be helping my overheating issue. Have you checked yours, @TCCC?
    They’re both fairly new, but it wouldn’t be the first time I ordered parts for the XJ-S that turned out to be wrong. 😠

    • @thecampchaoschronicles9567
      @thecampchaoschronicles9567  2 года назад +2

      Both of them not sealing would be odd. More likely too much pressure in the system.

    • @lebojay
      @lebojay 2 года назад

      @@thecampchaoschronicles9567 That might be good general guidance but in my particular case I think it is pretty likely that my filler necks are a bit messed up and/or one or both of my caps are incorrect. But for the sake of diligence and completeness, what might cause excessive pressure in my cooling system?

    • @lebojay
      @lebojay 2 года назад +1

      Caps replaced. No difference.

  • @rogergriffith1559
    @rogergriffith1559 4 месяца назад

    If your back East could you have salt damage on the brass fins that dissapate heat from the radiator tubes

  • @davidgeer4417
    @davidgeer4417 Год назад

    I am looking at buying a 94 xjs with a 4.0 six in it It is the one with a silver top. Any recomendations of what to look out for.

  • @scottpsychodub6385
    @scottpsychodub6385 2 года назад

    Just watched one of your videos where you used IronTite on the XJS, a possible contributor to your overheating issue?

  • @awaisaqsaimsal
    @awaisaqsaimsal 2 года назад

    Hi, Mohammed here from the UK. I'm considering doing a harness change, would you know the connector part number / type I need please. Great vids keep up the good fight. 👍🏻

  • @jorgegomez4608
    @jorgegomez4608 2 года назад +1

    The rear 4 cly. On the V12 retain the most
    Heat thats whyI think the stock radiator
    Can’t handle it especially in heavy
    Traffic an aluminum radiator with
    Twin Electric fans flowing 3500 cfm
    Is the answer

  • @smgdata
    @smgdata 2 года назад

    I Had this odd issues once, it ended up being the incorrect thermostats, they weren't closing the front bypass port all the way.

    • @thecampchaoschronicles9567
      @thecampchaoschronicles9567  2 года назад +2

      The cooling system flush is next and checking the thermostats will be part of that video.

    • @lebojay
      @lebojay 2 года назад +1

      I just swapped out Waxstat thermostats for Gates. The Gates ones are noticeably longer, both open and closed.
      In my case it didn’t matter - my car still over heats - but it’s good to know the Waxstat ones are unlikely to close that bypass port.

    • @thecampchaoschronicles9567
      @thecampchaoschronicles9567  2 года назад +1

      @@lebojay Flushing and thermostat inspection will be the subject of the next video.

  • @gizmothewytchdoktor1049
    @gizmothewytchdoktor1049 2 года назад +1

    head gaskets....a combustion leak test on the coolant system would make a quick diagnosis but beyond that...
    mls gasket replacement (if there is such a thing) or....a laser cut copper sheet head gasket (fab required :-)
    the horror in situ for the head removal/replacement.

    • @thecampchaoschronicles9567
      @thecampchaoschronicles9567  2 года назад +2

      The gaskets aren't leaking. It's the material betwqeen the fire rings and perimeter seal that turns to junk.

    • @gizmothewytchdoktor1049
      @gizmothewytchdoktor1049 2 года назад

      @@thecampchaoschronicles9567 question.
      remember the 2.9l that used the single v12 head? i am looking for a pair of those intakes. there is a plot afoot. ;-)......

    • @gizmothewytchdoktor1049
      @gizmothewytchdoktor1049 2 года назад

      .... thought you might be of help finding a pair as spare parts for jags appears to have a spot in your heart/collection.
      =dok=

  • @urielgiovanni1854
    @urielgiovanni1854 2 года назад

    Will the Jack Plate be available again???

  • @richardp6178
    @richardp6178 2 года назад

    So that's what you look like without a hat! I was wondering 😁 Out of curiosity why didn't you just rest the AC compressor on the radiator? Wouldn't it have been easier than using the engine cradle?

    • @thecampchaoschronicles9567
      @thecampchaoschronicles9567  2 года назад +2

      It's always a bad hair day here at Camp Chaos. The hoses for the A/C compressor are pretty stiff and the engine support IS really easy.

    • @richardp6178
      @richardp6178 2 года назад

      @@thecampchaoschronicles9567 😀Yes I'll be replacing all of mine on Moby as soon as I replace my broken recycler! God forbid I loose any of my R12!

  • @benjaminfranklin3515
    @benjaminfranklin3515 Год назад

    Do you anyone that does the same as your program (which is excellent) but works on the XJS as a 6 cylinder

  • @jeffharrison5265
    @jeffharrison5265 2 года назад +1

    Good news, bad news. Cars running smoother, but still no joy with the cooling issues. Great increase in fuel economy. Is that a HE engine? At this point I'd back flush the radiator, flush the engine and heater core, and new coolant. Good luck.

  • @petehalasz7547
    @petehalasz7547 Год назад

    Bob, you are a machine.. lol.. keep up the great videos.. I've worked on so many of these British cars throughout my career,, you sometimes run to a corner and start crying while sucking your thumb.. lol..
    I've learned long time ago, right bank always runs warmer, I always grab my very accurate temp gun, or if you're rich buy a thermo image camera... I would start reading temps at plug bases, than as close as possible across the water jackets.. than remove the heat shields and verify exhaust temps across each cylinder.... you would be surprised how much of a difference and a diagnostic aid it would result from. From misfires, lean conditions, flow problems, etc.. i teach my students to this day on new vehicles..
    You already know this, but help others,, I don't know if it cost alot out there, but you can have a shop with emission equipment quickly test exhaust, printout for less than $100 here in Canada..
    You should show everyone a quick test with your volt meter reading on the O2,,
    .1v lean,, .9v very rich, but unfortunately you have to have it gear... Or jump the 2 wires near ECU, into adjust mode...
    Good luck and may the tool gods be with you.. lol