This is my understanding about which hose this is but is this the one or is it another?

https://www.jaguarforums.com/forum/s...35&postcount=7

 

I too understand it's that one. Part AJ8 9746.

Known as hose-heater by the UK jag dealer but otherwise as Throttle Body Coolant Return Hose.

 

theres no plastic on/in the hose assembly. Simply reffereing to plastic and rubber on todays cars that deteriorate with heat. This is a throttle body heater and we all(most of us) know what heat does to power production(goes down due to less dense air). I have BYPASSED the TB heater on my Nissan and for those not in the FREEZE belt of harse winters. I would consider deleting this hose entirely and plug off the port under the sc with a silicone hose cap. I would recommend this where you wont get icing of the TB. Or you can make a bypass where the hose is used, but you disconnect the 2 ends from the TB and connect them together. In the winter just reconnect to the TB

 

Staatsof;
I do understand what your saying but this repair has been quoted to several people on the forum to cost from $1200-$1800. The hose is $20. For that kind of money I WILL change this!!! After several guys do it and we get a good set of instructions I think it would be something to do anytime the car has 50K miles or more.

I also like the Silicone hose idea a lot. Don't know what it takes to get one made with that material?

Brutal again thanks for the extra tips. This is a really tough repair job!!
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At 50K miles? Eek, mine's at 75K already

 

I don't believe the coolant return hose has any plastic in it. It appears to be solid rubber and you can protect it with thermal sleeve material. As far as not wanting to
perform this repair personally, I guess that's an alternative, albeit an expensive one.
So far my repair has cost me about $200 for parts and about 6 hours of time.

 

The discussion is being spread across multiple threads and it's very fractured.

Regarding the hose. See the other thread. That fitting is made from something. It could be a heavy duty glass reinforced duty nylon which should be fine. I'd suggest a complete autopsy of the hose and a look at what else is around the failure point.

Strange.

Bob S.

 

I can merge, but it will merge by date of posts..if that's ok, I'll do it.

After done, I can't undo it.

 

Might be better to just close this one so the other carries on but this one stays as-is?

 

Might I suggest that we include a link to it then as both are very much related.

Bob S.

 

Done (closed). If you need anything else related to this thread, admin-wise, please PM me.

Another thread directly (and sometimes cross referenced) -> the supercharger removal and hose repair thread

 

Do you still have copy of those instructions. I have run into the same problem was reading through the Forum and would certainly appreciate the help

 

8yr old thread!

JTIS is a free download or easily bought from the net so just get it

 

That's OK, following the trevails of an owner interspersed with input from a qualified tech is much better than that medieval torture device known as JTIS ​​​​.
He's unlikely to get an answer from the OP because if I remember correctly it was this repair plus the "while I'm at it" supercharger "upgrade" that ended up making him unload this car.

This PDF is much better http://www.jagrepair.com/images/Auto...M-Workshop.pdf