Coolant Leak from the Turbo on 97 850 GLT

txdscrt · Post by **txdscrt** » 21 Dec 2012, 11:49

Help!
As I pour coolant into the reservoir it gushes out from what looks like the turbo, (I can only see it from below)
initially I thought it was from the long metal line connection that returns back into the block,
but closer inspection revealed it was right above it which, I think is the turbo.
Can someone point me to some instructions on how to remove the turbo to find out for sure? (pictures?)
I was even thinking of a temporary fix to seal the leak (some sort of additive)
Your help is greatly appreciated.

JJ

Post by **jblackburn** » 21 Dec 2012, 12:41

Remove the heat shield and have a closer look from the top. There are three 10mm screws on it; remove the bracket, then shove the shield down and towards the passenger side of the car to remove it.

I'm thinking it may just be leaking near the connection from the tank to the back of the engine block.

Post by **Ozark Lee** » 21 Dec 2012, 12:55

Don't use any kind of "Stop Leak" on it, that stuff is bad on a number of things like the radiator, the heater core, and even the block. If the leak is as big as you describe then it wouldn't work anyway.

My guess is that you have a bad coolant line from the coolant pipe that runs across the back of the block to the firewall side of the turbo. It is a very common place for leaks to occur. The part number is 6842190.

I have found that the best way to get to it is to remove the banjo bolt on the back (firewall side) of the turbo and then remove the coolant line from that pipe to the turbo. Getting to the hose clamp from the other end of the coolant line is usually a bit tougher and you will need to remove the fresh air intake pipe to the turbo to get to the clamp with an extension and a swivel joint for the socket.

The removal of the coolant hose is detailed in this writeup for rebuilding a turbocharger on pages 7 & 8.

15G Rebuild Write up.pdf: (723.8 KiB) Downloaded 3595 times

Lastly, don't use anything for a replacement other than a Volvo part, the other option is URO / APA and URO rubber parts don't hold up for more than a few months.

...Lee

Post by **cn90** » 21 Dec 2012, 13:17

1+

There is another hose that runs from the reservoir ---> back of engine.
You can see that hose on pages 7/8 in the link above.
That coolant hose is in fact 7.5-mm or 8-mm fuel hose type that I happen to have in my garage.
Cut a section of the same length.
You will see a bolt (with a spring) holding the line, remove this bolt.
Remove the ground strap for easy access.
Oil the metal piping on both sides to make it easier to to slide the new hose in.

It is a very very easy DIY.

PS: Clamp the hose from the reservoir ---> back of engine to minimize coolant loss during the procedure.
The hose that Lee talked about (6842190) is a different hose with 2 diff diameters.

Post by **cn90** » 21 Dec 2012, 14:20

Lee or others,

Re hose 6842190 at Turbo.
If you have leak at that hose, what mileage does it happen?

txdscrt · Post by **txdscrt** » 21 Dec 2012, 14:43

Thanks Gentlemen for the quick responses!
As I went back in with a mirror, I found a hole the size of my little finger tip (3/8 ")
I found what looks like a freeze plug that had been pushed out onto the ground.
Are there any diagrams on the site that show that plug?
I can see it on the rebuild instructions pdf, I'd like to order a couple just in case or pick them up at the dealer.

I had only filled it up with water because it had started leaking and wife couldn't tell me where from so I figured it was the water pump. Turned out to be the upper radiator hose and now this plug.
I'm getting ready to replace the timing belt and water pump.
I have no idea when they were last done and I get some whining at start up in the mornings

Last night it froze so I figure it popped the plug. I wont do that again tonight.
I've been reading Lee's instructions on the timing belt and water pump.

The car has 152690 miles on it.

Post by **cn90** » 21 Dec 2012, 15:10

I just did the whole 9 yards (TB, pulleys x2, front cam seals etc. etc.).
If you can wait then I will post a DIY (the cam seals are NOT easy!) with all detail soon.

txdscrt · Post by **txdscrt** » 21 Dec 2012, 17:08

cn90 wrote:I just did the whole 9 yards (TB, pulleys x2, front cam seals etc. etc.).
If you can wait then I will post a DIY (the cam seals are NOT easy!) with all detail soon.

Thanks cn90,
I look forward to your DIY.
I wondered how difficult those cam seals were.

JJ

txdscrt · Post by **txdscrt** » 21 Dec 2012, 17:12

Thanks Everyone ,for the help with this leak!
You all ROCK!

The dealer said the only way to fix is replace the turbo, LOL.
They wont sell me the little freeze plug.

JJ

Post by **rspi** » 21 Dec 2012, 17:16

If the PCV is in good shape and the cam seals are NOT leaking, I would leave them alone.

If that freeze plug blew out of the turbo, it may not be able to be pressed in. You may need to get another turbo.