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Author Topic: Overheating 2.5TD (BMW Engine)  (Read 3509 times)

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TheBoy

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Re: Overheating 2.5TD (BMW Engine)
« Reply #15 on: 02 February 2009, 12:08:15 »
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Why not use pry bar, I'm afraid I did.
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As to guide, feel free to write one when you do it, with pics  :P


Remove 'Turbo Diesel' plastics

Remove that stupid viscous fan (left hand thread), and plastic rad cowling

Remove aux belt (find spring/damper, see it attaches to black metal plate via bolt - undo OTHER bolt that secures black metal plate, and then loosen bolt through damper). Do NOT use a pry bar on tensioner.

Remove waterpump pulley, then remove pump.

If you what to play with stat, thats easily accessible now - remove bottom hose, then 3 bolts to remove stat.
About 50% of the time you will end up with 2 smaller tensioner rather than 1 larger one, and superglue won't hold ;D
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platty

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Re: Overheating 2.5TD (BMW Engine)
« Reply #16 on: 02 February 2009, 16:27:33 »
I didn't ever touch my tensioner - it decided to snap in half all by itself, makes you wince when you got to buy a new one too  :(
« Last Edit: 02 February 2009, 16:27:41 by platty »
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Spearmint

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Re: Overheating 2.5TD (BMW Engine)
« Reply #17 on: 02 February 2009, 17:06:28 »
Cheers,

I'll have a blast at this tomorrow if I can't get the other car out of the garage.

Bloody snow.  >:(
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Turk

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Re: Overheating 2.5TD (BMW Engine)
« Reply #18 on: 02 February 2009, 23:19:55 »
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Phil, reservoir is full so I can rule out lack of coolant.

Which is the easier fix? Water pump or Thermostat?

Any how to threads?
Both as easy as each other, and assuming you have already done the decent thing a thrown that pointless, stupid viscous fan in the garage (god only knows why the retarded stupid designer smoked that big spliff before drawing on a viscous fan), only take 15mins :)

It WILL be the waterpump (if it was stat, you would have had a shit load of hot air from vents ;))

Ok, so what draws the air thru the rad if the viscous fan goes ? I know there are two smaller fans mounted in front but I thought they were for the A/C.
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Omegatoy

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Re: Overheating 2.5TD (BMW Engine)
« Reply #19 on: 03 February 2009, 08:11:35 »
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Quote
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Phil, reservoir is full so I can rule out lack of coolant.

Which is the easier fix? Water pump or Thermostat?

Any how to threads?
Both as easy as each other, and assuming you have already done the decent thing a thrown that pointless, stupid viscous fan in the garage (god only knows why the retarded stupid designer smoked that big spliff before drawing on a viscous fan), only take 15mins :)

It WILL be the waterpump (if it was stat, you would have had a shit load of hot air from vents ;))

Ok, so what draws the air thru the rad if the viscous fan goes ? I know there are two smaller fans mounted in front but I thought they were for the A/C.

on your rad are three plugs one for ac using the fans and the other 2 are for the fans to be used for engine cooling, one brings them in at 95half or low power and the other sends them into a full bodied get the engine temp down quick mode full power!!! unless of course the sensors oon the rad are goosed or not connected!!!
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Spearmint

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Re: Overheating 2.5TD (BMW Engine)
« Reply #20 on: 03 February 2009, 17:14:35 »
Had a crack at this today and I cannot for the life of me shift that rather huge 32mm bolt on the viscous fan.

Left handed thread so I would like to assume I am trying to undo it the right way by working the spanner clockwise (As you look at the engine from the front)
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charlie

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Re: Overheating 2.5TD (BMW Engine)
« Reply #21 on: 03 February 2009, 18:06:56 »
i used a 18inch adjustable then hit it with a hammer not to hard then unscrewed it with my hands
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TheBoy

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Re: Overheating 2.5TD (BMW Engine)
« Reply #22 on: 03 February 2009, 20:11:19 »
Quote
Quote
Quote
Phil, reservoir is full so I can rule out lack of coolant.

Which is the easier fix? Water pump or Thermostat?

Any how to threads?
Both as easy as each other, and assuming you have already done the decent thing a thrown that pointless, stupid viscous fan in the garage (god only knows why the retarded stupid designer smoked that big spliff before drawing on a viscous fan), only take 15mins :)

It WILL be the waterpump (if it was stat, you would have had a shit load of hot air from vents ;))

Ok, so what draws the air thru the rad if the viscous fan goes ? I know there are two smaller fans mounted in front but I thought they were for the A/C.
Your forward motion draws air through!  If you are staionary, the electric cooling fans pop on.

If your intercooler has a fan (some do, some don't), no viscous has the added advantage that this intercooler fan comes on more often.
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TheBoy

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Re: Overheating 2.5TD (BMW Engine)
« Reply #23 on: 03 February 2009, 20:11:42 »
Quote
Had a crack at this today and I cannot for the life of me shift that rather huge 32mm bolt on the viscous fan.

Left handed thread so I would like to assume I am trying to undo it the right way by working the spanner clockwise (As you look at the engine from the front)
yup, undo it clockwise.
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Spearmint

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Re: Overheating 2.5TD (BMW Engine)
« Reply #24 on: 03 February 2009, 20:19:26 »
Hindsight is always 20/20.

I undid the pulley first which slackened the belt off and thus gave me nothing to work against when undoing the viscous fan.

Of course on realising what a thingy I was being I started to reverse engineer it and ran out of light.

Putting a days holiday in so I'll have it sorted tomorrow.

Edit - loving the censor work as I definitely did not call myself a thingy! :D
« Last Edit: 03 February 2009, 20:20:45 by Spearmint »
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Spearmint

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Re: Overheating 2.5TD (BMW Engine)
« Reply #25 on: 04 February 2009, 15:24:37 »

Withdrew the water pump and found there isn't anything wrong with it!

 >:( >:( >:(Grrrrrrr.......

So my next guess is a poor anti freeze mix as what came pouring out was I can only describe as brown in colour.

Where is the block coolant drain? I not only want to drain it all off and use a fresh mix but also test the remains so as to be sure it is just that.
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MickAP

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Re: Overheating 2.5TD (BMW Engine)
« Reply #26 on: 04 February 2009, 17:59:18 »
Quote
Withdrew the water pump and found there isn't anything wrong with it!

 >:( >:( >:(Grrrrrrr.......

So my next guess is a poor anti freeze mix as what came pouring out was I can only describe as brown in colour.

Where is the block coolant drain? I not only want to drain it all off and use a fresh mix but also test the remains so as to be sure it is just that.

Silted up rad maybe?

Mick
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TheBoy

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Re: Overheating 2.5TD (BMW Engine)
« Reply #27 on: 04 February 2009, 18:13:22 »
block drain is on passsenger side of block, towards the back, 15mm iirc
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osealy

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Re: Overheating 2.5TD (BMW Engine)
« Reply #28 on: 04 February 2009, 21:02:07 »
I changed the pump & stat first as they were cheaper but it turned out to be the rad .180 . To undo the viscous I had to jam the pump pulley with a bit of angle before hitting the stilson on the viscous,

I put the viscous back on but the clutch doesn't engage.

stays at 95 except grades not been neer 100 since.
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Spearmint

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Re: Overheating 2.5TD (BMW Engine)
« Reply #29 on: 04 February 2009, 21:04:47 »
Finished it, took it out for a run and topped the coolant up. Temp was bob on as usual so fingers crossed! :)
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