Try these people if you get stuck Jay.

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Not used them myself but a fellow P6 owner has and recommended them.
They have an online catalogue that lists the GM180 Modulator for the Rover.

Righto..... (deep breath)

Despite Rimmers telling me the modulator valve is not currently available, they have sent me one anyway (????? - don't ask)

Anyroad, I have in my grubby little palm part number AEU2814, how does this sound to you guys, to establish if it is correct.

It's a cylindrical piece of alloy approx 6cm long, on one side there is a slot like a capital letter T, and on the other there are five slots. One end of the cylinder there is a piece if metal which slides up and down within the main componant and on the other there is a rectangular shaped block which is solid (ie does not slide within the main componant)

Ladies and gentlemen, have I just perfectly described a "modulator valve"?

Jay

Thanks Ramon, that is really most helpful.

I've been searching high and low online for an illustration such as you have shown me.

I have been promised a set of factory workshop manuals from a colleague who believe it or not was an Austin/Rover Mechanic in the 80s, but it's the usual "I have them packed away somewhere, I'll dig them out for you...." Not only SD1s, all the current cars at that time.

When I see him next, I'll ask him about this job, you never know he may do it for me for a fiver

Thanks again Ramon, and to all who've helped on this link, I'll let you all know how I get on.

Jay

Jacked the car up, now visualised the job, can now see how it undoes and how it works, but I haven't got the confidence to do it myself (that vacuum pipe looks very fragile....)

Hence a local garage (who can get the car RIGHT up in the air) is going to do it for me, but alas not until 9th May

All this lovely weather and I'm still SD1-less

Jay

I'm sorry Ramon, I'm such a wimp!!! lol

Unless of course if someone in the Portsmouth area can do it for me BEFORE May 9th x

I've just been reminded why I love my SD1.

I've just washed leathered and polished my car and apart from the scabby wheels she was shining like a new pin, and despite the current modulator problem, I just could not resist taking her for a brief spin into the village.

I passed a pub and during this fine weather there were a few people sat outside, and as I drove past I heard someone say: "Cor, you don't see many of those these days...."

Glowing with pride, I drove back home....

Ironically, (and the actual point of this entry) I had no white smoke coming out. Admittedly the car never got to reach full operating temperature, but is it possible a modulator valve fault can be intermitent? indeed I remember the white smoke also only used to start after a fair run before I took it off the road.

She's in Weds 9th anyway to get it done, then straight down to the bodyshop to hopefully get my refurbed wheels, new tyres then away I go.....

Jay

Thanks again Ramon, that's a great bit of reasoning...

Everything you say seems to make good sense.

You are the OBI-WAN KENOBI of the SD1 world

Have you a white beard, a monk's robe and a glowing sabre?

Jay - your apprentice

Garage fitted new modulator, the old one had some scratches and pitting (I STILL for the life of me cannot visualise how this component works ~shrugs~ but clearly it has a job to do, and mine had failed!!)

Roadtesting the car, she drives like a dream, even the engine seems smoother and quieter then ever, the autobox changes smoother, altogether a job well done.

Thanks to all who advised on this topic....

Jay

The white smoke has returned!! The car's going back in to garage on Saturday morning for further investigation....

BUT....

Whilst he's under there, he will be fitting new stainless steel downpipes and y-piece for me

Jay

About 500 miles, Ray

I did notice however that my transmission fluid is slightly, but not dangerously low, (just above "MIN") whether this amount has gradually been burnt off I don't know, I'll top it up to see if it makes any difference, thinking perhaps this modulator valve also relies on transmission oil pressure too?

I've also noticed very very occassionally, the transmission "slips" usually after accelerating out of a bend....

I'll still get him to strip and examine, to see if the new modulator has scored like the old one.

I'll keep you posted

Jay