Page 7 of 8 FirstFirst ... 5678 LastLast
Results 61 to 70 of 80

Thread: 3.9 V8 ran hot yesterday....what now?

  1. #61
    DAMINK Guest
    Quote Originally Posted by LRJim View Post
    125 120 125 130 then closest to passenger 130 120 110 125.
    The 110 is the only one I'm worried about but I really need to retest properly.
    Yea #3 does not look great. Does not look like your head gasket is gone though.

    I would expect to see 3 meeting 5 and dropping both of them readings if the head was gone there. 5 seen just fine.

    Could it be just that pot leaking into your water? Yea possible but lets hope not.

    Seems you may have dodged a bullet here mate.

    Be very paranoid though. I had my old girls last engine give me warnings before it went poop.

    They say your allowed 10% variation between pots(highest to lowest). Your outside that obviously so we have something wrong.

    Hopefully just old worn parts rather than head gone.... Not sure which is better actually now i think of it.

    Put some oil down #3 and test it again. See if that brings back the missing compression.

  2. #62
    Join Date
    Jun 2018
    Location
    Redesdale
    Posts
    1,524
    Total Downloaded
    0
    Quote Originally Posted by DAMINK View Post
    Yea #3 does not look great. Does not look like your head gasket is gone though.

    I would expect to see 3 meeting 5 and dropping both of them readings if the head was gone there. 5 seen just fine.

    Could it be just that pot leaking into your water? Yea possible but lets hope not.

    Seems you may have dodged a bullet here mate.

    Be very paranoid though. I had my old girls last engine give me warnings before it went poop.

    They say your allowed 10% variation between pots(highest to lowest). Your outside that obviously so we have something wrong.

    Hopefully just old worn parts rather than head gone.... Not sure which is better actually now i think of it.

    Put some oil down #3 and test it again. See if that brings back the missing compression.
    Yes it seems I'm pretty lucky and caught it time. For all I know it's been like that since I've owned it. All the readings are holding pressure and not dropping, I done the test myself and checked the gauge a few times before moving to the next cyl. I really need to do the test wet and at proper temp with the throttle open to get the correct results, but at least it's a decent indicator the head survived.
    It's not loosing coolant or burning oil so that's always a good thing. But it's definitely out of the 10% ratio. When I redo the test proper hopfully it evens out.
    Cheers Jim

  3. #63
    Join Date
    Jun 2018
    Location
    Redesdale
    Posts
    1,524
    Total Downloaded
    0
    Alright bringing this back, still no overheating which is great.
    So I just thought I'd check my A.C fans, they don't come on when I flick the A.C on the cars at operating temp sitting idle.
    Do they kick in at a certain temperature?
    I checked the fuse all good it's the same as the compressor.
    They could have gotten unplugged but I thought I'd ask before I go seaching for nothing
    Cheers Jim

  4. #64
    DAMINK Guest
    Just went out to check mine Jim.
    Ya wont believe it mate, THE ****ER WONT START lol!! (spark AGAIN i think)

    Gotta love the discos man, they keep ya thinkin.

  5. #65
    Join Date
    Jun 2018
    Location
    Redesdale
    Posts
    1,524
    Total Downloaded
    0
    Quote Originally Posted by DAMINK View Post
    Just went out to check mine Jim.
    Ya wont believe it mate, THE ****ER WONT START lol!! (spark AGAIN i think)

    Gotta love the discos man, they keep ya thinkin.
    Ohh you are joking right?!?! Poor bastard it's a never ending cycle! As long as they die in the driveway it's all good, in the bush or in the Burnley tunnel is death!

  6. #66
    DAMINK Guest
    Quote Originally Posted by LRJim View Post
    Ohh you are joking right?!?! Poor bastard it's a never ending cycle! As long as they die in the driveway it's all good, in the bush or in the Burnley tunnel is death!
    lol exactly.

    Got it going. Either that button at the back of the water bottle or the amp connection. Gave them a tickle and it started.
    Aircon turned on and fans were spinning from cold start. I assume they run constant when aircon is on.

  7. #67
    Join Date
    Jun 2018
    Location
    Redesdale
    Posts
    1,524
    Total Downloaded
    0
    Quote Originally Posted by DAMINK View Post
    lol exactly.

    Got it going. Either that button at the back of the water bottle or the amp connection. Gave them a tickle and it started.
    Aircon turned on and fans were spinning from cold start. I assume they run constant when aircon is on.
    Hahaha just gotta touch her in the right spot!
    Alright thanks for checking that out for me I'll have to get it running before I start using my air con. Maybe I can put my big thermos in front hahaha
    Cheers

  8. #68
    Join Date
    Apr 2016
    Location
    Melbourne
    Posts
    4,203
    Total Downloaded
    0
    Quote Originally Posted by DAMINK View Post
    .....
    Aircon turned on and fans were spinning from cold start. I assume they run constant when aircon is on.
    Zactly!
    They're always on with A/C on.

    They also come on, if the A/C is off) when the coolant temp hit's a certain temp level .. can't remember exactly but over 100°C from memory.

    From what I've read, the actual fans are pretty much indestructible, so look at wiring first.

    There's a condenser fan relay located in the driver's kick panel too.
    RAVE page's ETM 5 page 1 in the electrical trouble shooting section.

    Could be a little bits confusing here too:
    I think the Tdi is set up a bit differently to the V8.

    Tdi has a couple of switches in the cooling system for the condenser fans, and a realy to operate them.
    I reckon there may be a typo somewhere too in there, on one page it's listed as K109, but the same relay is then marked as K190 too in another section further down.

    But the V8 seems to have a Fan Control Module(component Z118) still down at the kick panel.
    See page 38 of the Z5 section of the ETM.
    Arthur.

    '99 D1 300Tdi Auto
    '03 D2 Td5 Auto

  9. #69
    Join Date
    Jan 1970
    Location
    Avoca Beach
    Posts
    13,981
    Total Downloaded
    0
    If it is an older Disco which it looks like from your photo tiny as it is, then the aircon fans should be on all the time the A/c compressor is on.

    If is it a V belt one, there should be a switch on the side of the thermostat which switches the fans on at 105C. Dunno about multi belt ones but probably the same. Mine only ever came on once climbing Mt Pinnibar in low range.
    That is if it is the same as an RRC 3.9.

    The best way to start troubleshooting is to run a 12v wire from the battery straight to the fans. You should find a connector near the radiator. If the fans start on 12V then they are Ok , then run backwards from there.

    Regards Philip A

  10. #70
    Join Date
    Jun 2018
    Location
    Redesdale
    Posts
    1,524
    Total Downloaded
    0
    Cheers Phil and AKD yes it's a D1 but after the facelift it's a 96 or 97. I'll definitely start by running a direct wire from the battery see if I can get them spinning. Then work my way back from there. I'll probably put an override switch in for towing while I'm at it. I'm not sure about the V belt I have a feeling it runs off the serpentine. Or do you mean V belt serpentine which it's definitely not. It's still a bit smelly but I think I've spilled some coolant last night.
    Lol yes my photos tiny it's just the avatar I havnt got on my computer to muck about with it all.
    Cheers Jim

Page 7 of 8 FirstFirst ... 5678 LastLast

Tags for this Thread

Bookmarks

Bookmarks

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •  
Search AULRO.com ONLY!
Search All the Web!