SAI Always on??

This site contains affiliate links for which LandyZone may be compensated if you make a purchase.
P

Pgups

Active Member
Posts
155
Location
SE London
Hi All,

I loved my P38 soooooo much I've now upgraded to a 03 Plate TD6.

Already I've noticed a problem unfortunately but still love the cars!

I drove it back from Wales yesterday and noticed that the engine sounded like a giant hair dryer as I accelerated. I'm guessing its the SAI staying on all the time???

I'd like to get this sorted as when I pull away from the lights small children cry and cyclists call me all the names under the sun because they think I'm going 200mph!

Have searched the forum but wasn't to sure what I was searching for so feel free to point me at a thread if there's one already.

Many thanks!!
 
It appears to be?

It's really loud and I did notice this morning when I went out it did it for few seconds then stopped but once I'd been out for a while and stopped for derv when I drove off it was on all the time?
 
I'm going to have a look in the morning and see if there's a relay the same that I can swap over. It might be clicking on and not going off??
 
I didn't know there was an SAI on the L322. Are you sure it isn't just the viscous fan stuck on. Seems a common fault. Mine sticks on occasionally but I find giving it a sharp rev or hanging on to a low gear will force it to release.
 
The fan is not controlled electronically from what I can remember

It's controlled by an oil lubricant (forgot the proper name) viscous fan ?

When the engine gets hot, the oil thickens and engages drive to the fan. As the engine cools it then thins and disengages.

I'm pretty sure this is the correct explanation

I have heard before about it getting stuck on
 
Last edited:
More likely the VC Fan is stuck....

The L322 does have Secondary Air Injection....I know the Petrol model does as I had to remove the pipe to access the water pump..!!

Didn't realise the Diesel had it too..!!

EDIT: Can't see any mention of SAI system on the Diesel in RAVE - I could be missing it, but I am not sure it has SAI fitted!
 
Last edited:
2.0_hippo said:
The fan is not controlled electronically from what I can remember

It's controlled by an oil lubricant (forgot the proper name) viscous fan ?

When the engine gets hot, the oil thickens and engages drive to the fan. As the engine cools it then thins and disengages.

I'm pretty sure this is the correct explanation

I have heard before about it getting stuck on
Click to expand...

If you look at the front of a viscous fan, you will see a coiled bi-mettalic strip attached the a shaft going into the centre of the fan. This operates variable vanes in the viscous coupling to cause the fan to progressively lock up as the temperature rises, the operating shaft, as with most things from LR corrodes and sticks excacerbating an overheating problem, whereas my electric fans mod uses top hose temperature so will always operate when needed:)
 
I think you may all be correct! I've only had it 5 mins I really need to do some research.

I don't think it has SAI as I can't find the pump in the bay.

Am I right in thinking you can hold the fan still with a pry bar once it's up to temperature? I seem to remember doing this years ago on my 5 series BMW.

If I can I could hold the fan and give it a rev to see if the jet engine feature stops?
 
Pgups said:
I think you may all be correct! I've only had it 5 mins I really need to do some research.

I don't think it has SAI as I can't find the pump in the bay.

Am I right in thinking you can hold the fan still with a pry bar once it's up to temperature? I seem to remember doing this years ago on my 5 series BMW.

If I can I could hold the fan and give it a rev to see if the jet engine feature stops?
Click to expand...
If the viscous coupling ha locked a pry bar in the blades when it's hot could be very destructive:eek: You sure the large electric condensor fan is not kicking in?
 
This is very true I don't want to break it!

I'll change the viscous anyway and see how that goes.

Where would I find the condenser? Is there a fuse I can take out to see if it stops?
 
Datatek said:
If the viscous coupling ha locked a pry bar in the blades when it's hot could be very destructive:eek: You sure the large electric condensor fan is not kicking in?
Click to expand...
That would have to be a fecking huge fan to be as loud as he says it is over the diesel knock!!..:eek:

My condensor fans are audible, but only from the outside and within 12" on the grill!
 
Saint.V8 said:
That would have to be a fecking huge fan to be as loud as he says it is over the diesel knock!!..:eek:

My condensor fans are audible, but only from the outside and within 12" on the grill!
Click to expand...
The fan on my mates L322 diesel is the biggest diameter electric fan I've ever seen on a car and the twin fans on my P38 make an amazing amount of noise on full speed. Maybe yours have never run at more than half speed, you sure you have more than one?
 
Saint.V8 said:
That would have to be a fecking huge fan to be as loud as he says it is over the diesel knock!!..:eek:

My condensor fans are audible, but only from the outside and within 12" on the grill!
Click to expand...

Yes when the fan is engaged it is very loud indeed.

Sounds like a Boeing 737 taking off ! Seriously !!

Only for a couple of seconds though until it stops
 
Ha ha diesel k ock you cheeky monkey!!!!!

It's not on when idel it's just when I'm on the accelerator.

I've got a copy of rave somewhere but it might be too old so ill need to update it.

If it does it today ill get a quick video of it as that will probably give you a bit more to go on.
 
You must log in or register to reply here.

Similar threads

M
2019 Discovery HSE TD6
Replies
0
Views
209
mapen100
M
T
Pressure Build Up on Hoses and Overheating 2.5na 110. Help
Replies
2
Views
555
the-prince-e-paul
T
R
Top Nut missing on the starter, Disco2 TD5 Auto
Replies
5
Views
656
Anaconda
A
S
Disco 3 (LR3) Vibration on acceleration and cruising
Replies
9
Views
2K
SM1543
S
9
2nd gear noise only on overrun
Replies
1
Views
766
tottot
tottot
Back
Top