Hello and Welcome to Jaguar Froum Register
if this is your first visit, please click the register button to join the worlds #1 jaguar forum!
Results 1 to 9 of 9
  1. #1
    Junior Member
    Join Date
    Nov 2008
    Location
    Hereford (Cider County)
    Posts
    8

    Engine coolant bleed screw on a 99 3 litre s-type

    Hi all, Could any one pls tell me where to find the engine coolant bleed screw?
    I have just replaced the expansion bottle as I seemed to have the usual cracked bottle syndrome but I now seem to have an airlock in the heater matrix as no hot air coming into cabin.
    Any advice would be appreciated as its rudy cold out there.
    [Moved to S Type section from Playground-Please post in relevant section..Thanks BuckMR2]
    1999 (T plate) S-type 3 litre V6 Petrol, Auto in Lovely Gold,

  2. #2
    Senior Member djdex's Avatar
    Join Date
    Oct 2007
    Location
    Derbyshire,UK
    Posts
    7,492
    Here's the recommended procedure;
    Open the engine air bleed located on the crossover pipe.
    Fill the expansion tank until the coolant flows from the engine air bleed screw and expansion tank is full.Close the engine air bleed screw.
    Install the expansion tank cap.
    Start the engine and set the heater to 29°C/90°F.Allow the engine to idle for 5 minutes, adding coolant to the expansion tank to maintain the COLD FILL MAX level.
    Increase the engine speed to 1500 rpm for between three and five minutes or until the heater is blowing hot air.
    Return to idle and verify that heater is blowing hot air.

  3. #3
    Junior Member
    Join Date
    Nov 2008
    Location
    Hereford (Cider County)
    Posts
    8
    Hi, thanks for the quick reply.
    Is the bleed screw a black plastic valve that is set in a pipe about 25mm dia with a flat head slot in the top, that faces towards the front of the engine, if it is do you have to take it all the way out or just rotate through 90 degrees as seems the case.
    1999 (T plate) S-type 3 litre V6 Petrol, Auto in Lovely Gold,

  4. #4
    Senior Member djdex's Avatar
    Join Date
    Oct 2007
    Location
    Derbyshire,UK
    Posts
    7,492
    I'm not familiar with the 3.0, but that description sounds bang on, yeah it doesn't come all the way out or anything just loosen it. Good Luck.

  5. #5
    Senior Member
    Join Date
    Mar 2007
    Location
    South Manchester Area
    Posts
    267
    I had the same problem about 18 months ago and couldn't figure out if the plastic screw in the crossover pipe was the bleed-valve or not as it didn't seem to have any effect however far I turned it, I was expecting to hear the air hissing out but couldn't hear anything. In the end I disconnected the end of the pipe and waited until water came out then reconnected it again. That worked for me. Hope this helps - good luck!
    You think I know bugger nothing - but I know bugger all!
    1999 S-Type 3.0L manual, Mistral / Cashmere, Leather seats, Memory Pack, Reversing sensors.

  6. #6
    Junior Member fugitive's Avatar
    Join Date
    Oct 2008
    Location
    middlesbrough
    Posts
    21
    I thinkl i have a similar problem could someone point me in the direction of the bleed off valve ive looked and looked and cant for the life of me see it cheers

  7. #7
    Junior Member
    Join Date
    Nov 2008
    Location
    Hereford (Cider County)
    Posts
    8
    Hi Thanks Heballi, the same seems to have happened to me, the little valve thing just turned with no release of air or water,so i decided to disconnect the pipe at the plastic T piece & try that.
    The pipe came off really easily, as in broke off in my hand, (is everything plastic, brittle on Jags?) Bodged it at the moment, need a replacement T piece that includes the bleed screw, anyone got any idea where from, or is it Genuine Jag only?
    So in summery: still rudy cold, with bodged pipe connections.
    1999 (T plate) S-type 3 litre V6 Petrol, Auto in Lovely Gold,

  8. #8
    Senior Member djdex's Avatar
    Join Date
    Oct 2007
    Location
    Derbyshire,UK
    Posts
    7,492
    Quote Originally Posted by The Wedding Car
    need a replacement T piece that includes the bleed screw, anyone got any idea where from, or is it Genuine Jag only?
    It's gonna be a genuine part only I'm sure. Unlucky about the breakage, I dunno if Jag are particularly bad, but any plastic that is heated and cooled repeatedly is gonna get brittle.

    As for the lack of heat, have you set the climate to max temperature and given the engine a few revs for a few minutes, reading the JTIS cd, the bleed nipple is only used during filling, open it and fill till it comes out of there, close it, ensure the expansion bottle is at max then do the revs thing, sorry I can't offer any actual advice, I've never had the need on a Jag, I would recommend giving the pipes a squeeze as well to help move things round the system.

  9. #9
    Junior Member
    Join Date
    Nov 2008
    Location
    Hereford (Cider County)
    Posts
    8

    Coolant bleed valve update

    Hi all,
    Just to update you on ruddy freezing heating,
    Found out that the bleed valve was useless so put the car into a garage that can vacuum out the coolant & then replace the coolant once the system has been totally evacuated of all coolant and air.
    Still no heat in cabin & they narrowed the fault down to the heater valve sticking shut, (again common fault on early S type)
    When I bought the car it had green antifreeze in the system, this has apparently caused the problems as the green 3 year antifreeze can cause damage to O rings, engine components, & can also make any plastic water connectors brittle, & when the pink recommended antifreeze is put in it can react with any traces that are left of the green antifreeze.
    Got a warrentied refurb. heater valve for £68 + vat & postage from Just Jags + I get £20 back on service exchange from them for the old heater valve.
    They have also stated that the wrong antifreeze has not helped the situation I am in, & have backed up my local garage diagnosis.
    They have also recommended that I use radiator flush before the system is drained & then flush the system thoroughly with a hose pipe before refilling with the pink antifreeze.
    I am no expert on this, but it does seem that when two garages/suppliers 75 miles apart can come up with the same diagnonis, then they must be on to something.
    I hope this can help others with the same problems.
    1999 (T plate) S-type 3 litre V6 Petrol, Auto in Lovely Gold,


 

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •  
All times are GMT. The time now is 05:30.
Powered by vBulletin® Version 4.2.2
Copyright © 2014 vBulletin Solutions, Inc. All rights reserved.
SEO by vBSEO

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100