c5 turbo cut out

[sijrayner]

thanks, will try this over the weekend and report back in due course.

[sijrayner]

hello gentlemen, monday morning update. i did as planned, removed the top pipe from electro-valve and plugged pipe. then i disconnected the swirl valve arm at the top, as instructed i then pinned the valve in the open position. " BINGO ", yee haw, yippee, praise the Lord, etc etc.
now i know this is only a cheat and not the cure but i have now driven the car for 200 miles like this, all the warning lights have gone off, (engine warning and service) the esp/asr no longer comes up after short drive and i can get up hills without being pushed by an old man on a bicycle. a true revelation. i will now (hopefully with help) endeavour to fix the original problem and have the car running properly soon.
thanks for the help so far, and for saving my sanity and safety, i owe you guys a few beers.

[cachaciero]

Nice when a plan comes together

You now have all the info required to really fix it so look forward to the next instalment

By the way if you try it with the swirl valves fixed in the open position as opposed to closed would be very interested in fuel consumption figures.

cachaciero

[KevMayer]

Great news.

Now you have the chance to enjoy your C5.

I've been on holiday to Wales for the last 4 days and my C5 went really well. It was so comfortable and a pleaseure to drive. It returned 44.2 mpg which was very pleasing.

[sijrayner]

hello again, have been driving with the swirl valve locked in the open position, i have done a tank of diesel and can report that fuel consumption is not so good. i returned 32 mpg. my car is an auto box so didn't expect to get over 40 but seems quite harsh low 30's. i have been doing short trips locally and done quite a few miles towing a trailer so gues all these bits will reduce the figures, i have the new actuating diaphragm so if i get time will fit that and see what happens next.
cheers.

[cachaciero]

Interesting about the fuel consumption, but what I expected.

If you set the valve closed until you change the diaphragm the economy and low end torque will be better. Looking at mine and average engine revs as far as I can see the majority of time the valve is going to be closed anyway.

Mines a 2.2 auto and with it all working properly (as far as I can tell) it returns about 35 on local poodling around although depending it can drop down to as low as 30.

A couple of weeks ago I did a longish run of 140 miles of which about 120 was motorway going down during the day average speed would have been about 60 (traffic and roadwork speed restrictions) and it returned 41 according to the trip computer. Coming back same route late at night average speed 75 on motorway (cruise control on for majority of motorway distance) consumption fell to 38 go figure.

cachaciero

[h2ocooler]

If you need a new swirl actuator they are pretty cheap, about £30 iirc, I had to get one as the plastic ball joint kept coming off, I just replaced the ball joint in the end, it was easier.
Im in Medway if you ever need to be LEXIA checked
Rob

[cachaciero]

If you need a new swirl actuator they are pretty cheap, about £30 iirc, I had to get one as the plastic ball joint kept coming off, I just replaced the ball joint in the end, it was easier.
Im in Medway if you ever need to be LEXIA checked
Rob

It may have been easier but at 196K if it's never been changed I bet the diaphragm has a few holes in it just waiting to cause you further problems

Alignment of the shaft is way out i.e the plastic socket stands proud of the ball by about an inch worth putting a joggle in the shaft when fitting a new one.

cachaciero

[sijrayner]

hey sorry been off for couple of days, Cach those fuel figures are mad. i usually do journey to work 45 miles on motorway and was returning nearer 40 mpg. when i get time to fit new parts i will report back again.

[h2ocooler]

Mines a 2.2 HDi auto and on a 900 mile trip through France fully (over)loaded on the way there I average around 38mpg, thats mostly at 80-90, full of building materials and tools (and I mean FULL)
The worst was towing a fully loaded caravan over there and she did 28!!!!

The best I had was when I first bought her, on the way back (when I worked out how to reset the comp) I averaged 50.4, never got to that again though.

Going to check the swirl actuator when I get chance, I think its ok but better safe than sorry lol.
Rob

[cachaciero]

hey sorry been off for couple of days, Cach those fuel figures are mad. i usually do journey to work 45 miles on motorway and was returning nearer 40 mpg. when i get time to fit new parts i will report back again.

Well the conditions on your trip to work around the M25 is probably about the same as the down trip I quoted and the consumption was 41 which is little different to the figure you are getting.

I suspect that the trip back the consumption was higher simply because we were going faster over longer distances. At higher speeds the suspension lowers the front of the car a little to improve stability, I have read that this increases drag and thus the fuel consumption.

cachaciero

[cachaciero]

Mines a 2.2 HDi auto and on a 900 mile trip through France fully (over)loaded on the way there I average around 38mpg, thats mostly at 80-90, full of building materials and tools (and I mean FULL)
The worst was towing a fully loaded caravan over there and she did 28!!!!

The best I had was when I first bought her, on the way back (when I worked out how to reset the comp) I averaged 50.4, never got to that again though.

Going to check the swirl actuator when I get chance, I think its ok but better safe than sorry lol.
Rob

Your consumption is pretty well on a par with mine, I feel that it is probably a little high but I can find nothing obviously wrong except that it does seem to me that the box holds on to lower gears for to long.

A fully loaded van?? did you know that the max recommended tow
weight of the auto is 1000Kg's compared to 1500 for the manual??

cachaciero

[sijrayner]

ok i don't feel so bad now, seems to be pretty much average, in that case the only loss with the valve permanently open is sluggish from pull away but as that is only from 0 - 10 mph then it picks up fine. in fact it is only till the rev counter hits 1500 rpm then the turbo kicks in and away you go.
i would recommend trying this to anyone that has the limp mode thing going on, since i disconnected the swirl valve actuator i have had no warnings come on, no going into limp mode and no other problems. even the anti pollution warning has gone away. it is not the cure but as a temporary measure or just to check if that is the cause of your woes i would definitely try it.
thanks again to cachaciero for suggesting this.

[cachaciero]

ok i don't feel so bad now, seems to be pretty much average, in that case the only loss with the valve permanently open is sluggish from pull away but as that is only from 0 - 10 mph then it picks up fine. in fact it is only till the rev counter hits 1500 rpm then the turbo kicks in and away you go.
i would recommend trying this to anyone that has the limp mode thing going on, since i disconnected the swirl valve actuator i have had no warnings come on, no going into limp mode and no other problems. even the anti pollution warning has gone away. it is not the cure but as a temporary measure or just to check if that is the cause of your woes i would definitely try it.
thanks again to cachaciero for suggesting this.

Well put the valve closed (full back) this will improve the low end and you will hardly notice any difference up to the legal limit.

At 70 mph in top the engine revs are such it is on the edge of the valve opening when all is working correctly.

cachaciero

[pavlebo]

What rubber pipe I must close out, 1 or to 2, to try to solve problem with swirl valve?
Please, see picture.
http://img844.imageshack.us/img844/6231/qx7p.jpg" onclick="window.open(this.href);return false;

And when is swirl valve open,rod to the front of car or to the passenger compartment?

Thanks!