General First proper run out

[scoobyfm]

So for those of you who have been reading my recent posts I thought I'd tell you about my first proper run out in the new motor. I left Carlisle and headed for a friends place in Ipswich on Friday, a run of about 340 miles, and my (new to me) Multipla ran like a dream ;-)
The fridge was a godsend, to be able to pull into a services and have an ice cold drink was brilliant, kept my sandwichs cool as well.
When I got south of Stafford the weather warmed up dramatically requiring the air con to be put on and even with that and my somewhat slightly heavy right foot, the car returned about 42 Mpg which I thought was respecatble.
I love the slightly higher than average driving position and the visibility is brilliant.
On the way down I got a TOOT and flash of the lights from a fellow owner so I felt I should the same when I passed one on the M6 coming home yesterday.
2 weeks in and I'm loving this car ;-)

 

[momoe]

Other than wind/road noise being a bit intrusive at speed, they're surprisingly good to drive.
I would like a 6th gear though, will do the Punto gear swap when the clutch is done to increase the ratio on 5th.

 

[widemouthfrog]

hee hee....

You're right though, a 6th gear (mated to one of the later 150 JTD's, but with the pesky DPF) would be great. Still, the next best thing is this gear mod mod and a remap/tuning box. I've got to sort my turbo before that happens though.

 

[Devious]

Do you have to replace the box to add the 6th gear? The multi could definitely use a 6th....
Ta

 

[momoe]

Not aware of any easy 6 speed box swap, the existing 5th gear is an add-on in that it's on the outside of box.

This makes it relatively easy to take the end cover off, undo the retaining nuts, swap the gears for the longer legged Punto gears and off you go.

DPF's can be removed as I believe it's not a legal requirement, it's fairly easy to get the ECU re-mapped to not flag an error if the DPF isn't present.
As long as the car passes emissions tests, you're ok, you might need a really good italian tune-up though.

WMF has the parts and I've just given him the excuse to get them out of the box!

What's up with the turbo, WMF?

 

[widemouthfrog]

Since the day I bought it, it's whistled like a distant police siren. I think there may be a leak somewhere in the intercooler ducting, but I've never found it - might have to take the bumper off and remove the whole lot for a clean out. I don't think the VGT works either - the pushrod from the actuator can't be made to move for love nor money. The turbo spools up ok and certainly boosts but I'm not so sure it functions as intended.

Not sure about the actuator solenoid, but if I drag it all out through the front I can check that out as well.

 

[Devious]

A step by step guide would be appreciated on that as I have the same odd whistle. Its a garrett tubs.
Ta

 

[momoe]

Bit of tubing (Poor mans stethoscope) might help you locate the whistling but it's difficult when it only does it on boost!

Bumper is straightforward but a little time consuming to remove, inner wing attachments need comprehensive squirt with penetrating oil the night before.
I found that one of the support brackets had fractured on the intercooler so be prepared to either fire up a welder or put your blacksmith hat on.

Good luck with the actuator as I believe they're not available separately, anyone verify this?

 

[Devious]

Same as the ones on the Doblo according to my mech mate.
Ta

 

[widemouthfrog]

I've tried looking for it (a leak) with soapy water brushed on everywhere, but saw no bubbles. I've tightened up all the tube clamps and that didn't do it either. If the intercooler itself has had it, I've found somewhere that sells them for a reasonable price.

I've not found the actuator for sale separately, and talking to various turbo refurb places, the chances are that if the rod won't move, then the actuator ring will be seized as well. I've already resigned myself to having the turbo rebuilt. Turbo Express is probably my destination for that.

 

[momoe]

How does the power delivery feel and what mileage are you getting?

If the turbo wasn't delivering within parameters, I'd expect either an insufficient air error generated by the MAP or an overboost condition.

If this is the variable geometry vane actuating rod, I'm surprised unless it's stuck half way; if it was stuck in fine pitch, you'll lose out on top end - coarse pitch it'll be very slow to spool up.

 

[Devious]

It honestly does sound like a siren in the distance. Its odd.
The actuator rod moves freely as it should.
I've not noticed any lack of power other than when reviving over 3.5k.
Thursday the egr is getting banked so it may solve that issue.
Still got this weird wiring to contend with also.

 

[widemouthfrog]

If this is the variable geometry vane actuating rod, I'm surprised unless it's stuck half way; if it was stuck in fine pitch, you'll lose out on top end - coarse pitch it'll be very slow to spool up.

Suspect it's the latter (bottom end torque lacking).

I get mid 40's mpg.

 

[momoe]

Don't understand why the ECU isn't flagging an error? The engine isn't getting enough air at low revs so it'll be overfuelling.
Throttle potentiometer will be telling the ECU to put the right amount of fuel in for the load, the ECU should have a table of acceptable values for the MAP at any given engine load/RPM - does the MAP value override the fuel value?

Even so, it's unlikely to be within parameters so why no error?