XM auto - EGR electric vacuum pump

[lolingram]

For owners of newer/fussier cars I would think twice before diabling the EGR system, for example it's thought that EGR faults are what leads to the demise of the Renault 1.9 DCi's.

Notwithstanding that we are basically French Car Lovers( ), it has been my experience that when it comes to quality mass production engineering, PSA are streets ahead of Renault - not even in the same ballpark. Apart from often apalling vehicle build quality, Renault engines in particular often just don't last anywhere as long. Engine technology can be excellent though...

Electrical probs can sometimes be horrendous... I have known folk to just dump the problem on some main stealer and buy out of the situation. That is not to defend PSA on occasion, just a general summing up. Anyone different ideas?

[citroenxm]

I actually think Renault have gone STEEPLY down hill!!

Their 80's to early 90's engineering was I think AMAZING!!

There was a MANY Renault 25 ( Remember them, I do and unfortunally seem to be none left) with a MASSIVE millage on the Douvrin 2.2 litre engine (also fitted to the CX )

The OHV engines in the 18, Feugo, 9, 11 were ALSO very strong and went quite well.. I was unfortunate to have NEVER sampled a Turbo in any format, and a 1600 Renault 18 Turbo with 125 bhp sounded VERY tempting, in fact, wanting! But it was the awfull bodys that let them down... in the 25 it was apparently electrics, so renault sorted the bodys, but spoilt it all with Electronic technology... Ive seen MANY A newer Ren driver having immobiliser problems, needing to lock/unlock a car many times to get the ECU to unlock to start the car....

Paul

[steelcityuk]

The first turbo diesel car I drove was a Renault 19. After being used to Astra 1.6/1.7 D's I thought it had amazing performance. Following that I drove the PSA 1.8 TD.

Before plumping for the C5 I was interested in the Vel Satis. After reading the horror stories about the 2.2 dCi I decided to stick to Citroen.

Going back to the dCi's I can only assume that the extra cooling they get from EGR is critical and if that is removed it kills them in the long term.

As for Mazda 6's I think it was an engine used only by them being 2.2 Litres. It's the only car I know of that has a sump that fills up between changes and has a dipstick that effectively says min - max - danger, in that order.

Steve.

[citroenxm]

Why? Ford use Peugeot engines... The Jag has the PSA 2.2, Ford dont announce on their cars the engine sizes they are installed with, just the TDCi badge, so I could have a nifty feeling the mazda 6 2.2 DERV lump could very well be Peugeots lump.. is the actuall CC figures the same?

Paul

[CitroJim]

The little 1.25 Zetec engine in small Fords was a Mazda engine. I think they mix and match depending on model. Some Fords will have a mazda engine and vicky-verky.

It's the only car I know of that has a sump that fills up between changes and has a dipstick that effectively says min - max - danger, in that order..

That's not good enough these days. Maybe that's why there's a Mazda 6 model called a TS. Does that stand for "Total Sh***" by any chance?

The 2.0 TDCi fitted to the larger Dagenham Dustbins appears to be a good 'un though. Still, if it's a PSA HDi in thin disguise, there's the reason...

[citroenxm]

I ommitted to repeat, and Ford OWN a VERY large part of mazda...

Luckily, mazda ALWAYS continued in the 90's to use there OWN petrol engines and NOT ford engines...

Paul

[steelcityuk]

I can only go on what I've read and been told. I assumed that the engine was unique to Mazda because no other cars I know of exhibit this behavior. Also Mazda have now dropped that engine and gone over to the 2.0 which could well be the PSA/Ford lump.

It's sad really because the owners of these cars said how nice they were to own and drive before the problems started. Mazda apparently denied it was a manufacturing/design fault and said it was owners fault for not ensuring that it was serviced correctly and/or that the oil level wasn't checked often enough. One owner needed an oil change after around 1000 miles because the sump was full.

I'm not trying to discredit cars/owners/drivers just mentioning what I'd read. Car ownership is horses for courses in my eyes.

Steve.

[steelcityuk]

Here's what Wikipedia have to say on the engine.

>>>
Mazda 2.2 MZR-CD R2 engine has absolutely nothing to do with family of belt-driven PSA DW12B twin turbo engine, produced in Trémery or Ford Duratorq ZSD-422 VNT engine, produced in Dagenham.

2.2 MZR-CD engine features:

* Denso HP3-based common rail with system injection pressure increased to 2000 bar/200 MPa
* common rail injectors that have 10 spray holes (instead of the 6 used on the MZR-CD 2.0) and higher response solenoids
* low compression ratio of 16.3:1, made possible with highly atomizing injectors
* VNT turbocharger with curved vanes and abradable seal
* chain-driven DOHC valve system
* aluminium lower block combined with low-friction, front chain-drive balancer shaft
* newly developed, high thermal resistance DPF system with global-first ceramic support matrix structure
* newly developed EGR cooler
* Euro Stage V emission rating

I realize that Wiki isn't always correct but this does seem correct.

Steve.

[lolingram]

Car ownership is horses for courses in my eyes.

Absolutely - the spice of life!

[citroenxm]

Steve,

well that tells me then... Strange that Mazda didn't get the 2.2 correct then, as all previous Mazda Petrols are great units (NOT used in Ford) and ID LOVE to sample the older 1995 to 1999 2,oi D CX Super charger engine they had in the older 626 car.... before common rail.. think it was an IDI engine too and their own at that...

Paul