Hi everyone

I have a coolant leak on my '95 850 T5 Wagon. I'm pretty sure I've identified which hose is causing the leak, but I have some questions



Circled in red is where there's a lot of dried coolant build up (white dried stuff), and circled in red is the metal pipe that also has a lot of coolant on it (fluoresces when I shine a black light on it).
This is on the driver's side of the vehicle, with me looking up and to the left from about the center underneath the car.

So, my questions are as follows.
1: What is the rubber hose and hose clamps that I need to replace the part circled in red?
2: How do I replace the hose? Going from the top with the hood up? Or from the bottom as I am in this picture? Both?

 

kind of hard to tell what angle you took the picture from but I don't think there's too many parts that are accessible from the bottom. Most likely you may need to remove the intake air box or perhaps lift up the intake manifold - but I'm kind of guessing without a better picture. The intake air box is easy enough to remove, you just need to apply some force to pop some of the tubes off and you may need to remove the battery. To see how the intake manifold can be lifted up or off, check out vids on how to replace the PCV hoses (may be a good thing to do if you haven't done that in the past 50-75K miles.).

To figure out what part is required, I'd start with a dealer web store like tascaparts.com or similar to see a diagram and get the Volvo part number. You can then google around for stores to get your best price on a dealer part or an aftermarket replacement.

 

Is that the coolant line for the turbo? If so, it can be accessed from the bottom. Firewall heater hoses are accessed from the top when you remove the intake pipe to the turbo.

 

Yes it is a turbo.

Also, I ordered all of the coolant hoses (and most of the hose clamps) for the entire car. I'm going to replace all of them since I don't know when they've been replaced. I bought it at 165k miles, and it now has 175k. I also want to replace all the hoses first, then see if I've blown the head gasket or not, but I can't really check until I've repaired this leak. I'll figure out what I want to do after I know.

 

Make sure you order the heater core. I also replaced the heater core coolant pipes.

 

The heater core was replaced by the mechanic I bought it from, so I don't think I need to replace that

 

Update: I've found the leak. It's the heater core inlet (the one that goes to the engine). The issue I have right now is, it's very difficult to get to the hose clamp that goes into the engine.
So my questions are now, how do I get to the inlet hose? And, what size is the hose clamp? 7mm?
I think I might be able to reach it with a combination wrench of that size.
Any suggestions or tips would be greatly appreciated.

 

If you are replacing the heater hoses from the engine to the coupler, you need to remove the air intake tube from the airbox to the turbo. The screw on the hose clamps for mine was a 7mm. Be careful removing the hose because if the coupler is the original one, it can break.

 

I've already managed to disconnect the hose from the firewall coupling, and I have replacement parts for said coupling. That said, I was talking about the hose clamp that goes into the engine itself, since it's hard to access

 

Remove the air intake tube to get access.