Espace 2.2 oil burner question

[richardthestag]

Question to all the Renner aficionados on here.

 

My bro has a 54 plate Espace 2.2 dizzle and up until very recently it has been cushty but very thirsty old barge. Now however occasionally when accelerating from a stand still it will be painfully slow to about 10mph and then take off like a scalded cat. Scarey shit when pulling onto a roundabout in rush hour apparently.

 

His local mechanic has had about £400 worth of fun diagnosing it and admitted defeat. His only recommendion is to be arse raped by Renner main stealer.

 

Before we even think of heading down that route or finding out whether it floats in the Thames anyone else got any ideas what the problem might be?

 

Bro is finding out what sensors etc have been replaced already.

 

Richard

[dieselnutjob]

do these have a variable geometry turbo?

vanes stuck in "high revs" setting?

[Albert Ross]

Throttle Position Sensor, Air Flow Meter,. Turbo vacuum hoses, Boost pressure sensor, not sure how many of those it has, if any, but they're common issues on Electronic TD cars.

[Guest]

I know a little on these, if the boost pressure sensor is dead it reads as "too much boost" and goes into limp.

 

Turbo vaccum hoses hold the wastegate shut by suckage so no suck no boost at all.

Even a small leak is 'enough'.

 

Variable vane turbots can clag up and it's a known thing as mate did his Dad's VW at the weekend with some special cleaner(?) specifically for that porpoise.

 

Blocking cat maybe? Needs lots of huff to hold the obstacle out the way?

[Pete-M]

My brother has one of these grenades. I've spent weeks trying to make it run properly, he's spent a fortune in the process. It was mint for the first 95k, then everything died at once - turbo, engine, afm, flywheel... He's had it from new and it hasn't been abused.

 

Check every pipe under the bonnet is secure, then change the air flow meter and have the codes reset. It'll flag up "COLD START CIRCUIT", they all do that. They're sods for accumulating fault codes, but although the air flow meter doesn't flag a code when it's knackered it does when you unplug it to see if it's that.

[richardthestag]

cheers chaps, seeing him this weekend so i'll go have a play

 

[The Reverend Bluejeans]

finding out whether it floats in the Thames

 

Do the Swans fly over the kingdom of Vestas? Especially in the underbonnet region.