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[TheBoy]

Time for an update.

Split coolant pipe replaced and oil cooler changed and reassembled with Tunnie's help. Constant coolant flushes are starting to have an effect, as the coolant is now coming out fairly clear, with just odd oil droplets

Rear door central locking motor replaced with one from Ronnie McB, though door card not put back on yet as a previous owner must have had a go, and has knackered a self tapped hole.

Rear multiram repaired, and when activated with a Tech2 moves as expected.

Outstanding problems:
Rad fans don't appear to come on. Shorting out pins 1 and 2 on rad sensor brings on 1 fan, shorting 1 and 3 does bugger all.
Temp gauge has packed up (this was working intermittently when we put it back together, but hasn't worked for days)
Its holding back under heavy acceleration. I know its 'only' a 2.5, but it should go better than it is.  The split hose would have sprayed water all over DIS.

Any ideas with these 3 issues?

[Timbuk]

Wrong fan switch maybe ? Only saying because when i did my oil cooler a couple of weeks ago i had the same problem, no fans, turned out it had the wrong switch and i had never noticed, grabbed one from the scrappy when i was there put it in and they ran constantly so then i took the right course of action and bought a new one and now working perfectly ! Aint they a bugger to flush !!!! Three lots of rad flush and dropped it about 10 times now and its still noy perfectly clear

[TheBoy]

I reckon I've dropped the coolant about 20 times over last couple of days - constant fill it, let it idle for about 10 mins, 10 mins to cool a little, then drop coolant and start again.

Trouble is, I've been using tap water, I'm wondering if thats whats knackered the temp gauge and fan switch. Or the oil.

Might go to scrappy tomorrow to get a new rad switch...

[Markie]

wouldnt have thought that tap water ( flushed straight through...?) would cause that so quick....

[TheBoy]

I've run the tap water up to temp, possibly beyond due to no cooling fans  

Now using water from water butt which should be softer...

[Timbuk]

Yep same here, satisfying job though. Fan switches are different with or without aircon ! cost me 18 quid for a new one

[TheBoy]

Thanks for info Timbuk - I'm off to scrappy tomorrow, I'll see if they have one from aircon v6 (wanna get this car running properly now...)

[Martin_1962]

Any ideas with these 3 issues?

Sorry but with your project name Jaime - better call International Rescue

[TheBoy]

Any ideas with these 3 issues?

Sorry but with your project name Jaime - better call International Rescue

But Project TheBoy 1 is too much to type....

[RonaldMcBurger]

For flushing try filling with water, then start and run up to temp wirth header cap off. Now, open drain on bottom of rad, go to hospital for severe scalding, get back and repeeat WITHOUT getting burnt this time, then run a flow of water back in the header tank to match what is coming out - leaving the engine running the whole time. Should flushg it through fairly well I would have thought.

If it doesn't work, Laidback is going on his sennie breakdown in deepest Eastern Europe next week, so I can borrow his keys and we could just swap the cars over. He'll never notice.

HTH [smiley=vrolijk_26.gif]

[Taxi_Driver]

I'm a tad confused here....not suprising really  

I thought there was only one rad fan....there is on a 2.2 and thought V6's the same.
I know on the V6's they have 2 fans for the aircon cooling....where as a 4 pot only has the one.

IIRC I think Mark told me the temp gauge sender is in the engine block.....sure you havent knocked the wire off it?

Perhaps you can get another dis pack for it while your at the scrappy and try swapping it?

[x25xe]

Having had the rad cover off my Omega for recent coolant change, I can confirm that there are thee fans on the V6 (mine is a 2.5).  Two fans are for the A/C condensor and are at the front of the rads and one, very large fan, is behind the engine rad for coolant cooling (obviously!)

Now, when I was fiddling about in this area, I noted that there were several senders / switches on the left hand side of the rad (as you are looking at the rad from the front of the car).  I am not sure what sender / switch performs which function, but I would suspect that any form of fan switch will be in the rad.

Your temperature gauge may be suffering from a failed sender.  Try removing the sender lead and shorting it to ground.  If the gauge goes into the red then it is the sender at fault.

HTH somewhat!

[TheBoy]

The wire for temp gauge looks connected OK. Strange how this and cooling sensor have stopped working - wondered if it was the oil or the hard tap water that may have killed them?  Motronic coolant sensor still seems to be working, and is readable via tech2...

[x25xe]

More likely to be the Oil TBH.  I don't think that you had tap water in the system long enough for any lsating effects.

If it were me, I would just bung on a new sender along with the rad fan switch.

However, I realise that any such actions will eat into any profits from the project.

[Taxi_Driver]

Ohhh other thing i just thought of ....for the sluggish performance

And I think Ron had this on one of his Omegas....try changing the fuel filter....I think it made a lot of difference to his one