Help diagnosing C4 VTS problems (Ex Davie LEZ VTS 180)

[Fake Concern]

It doesn't appear to have a MAF, so not sure how it is picking up a flow coherence error. I can't see an EGR valve either, but I suspect it has one? Does it have a fuel filter, and has it been changed?

The fuel filter is just a strainer in the tank, not likely to have been changed, but if it was blocked wouldn't it be giving an error for running lean?

Yes, I saw that, but it calls it an 'air pump' not an EGR valve

There is also a vac solenoid on the air intake circuit, but there's no indication what it's for!!

I believe the vac solenoid is to open the second intake on the air resonator at higher revs.

Another question, if the timing belt had been put on one tooth out, could that give the errors we have? Presumably the valve timing being out would affect both intake and exhaust flow?

[Fake Concern]

Starting seem like I'm clutching at straws now! However, this article is very interesting

http://enginedtc.com/p1161-citroen-c4

[xantia_v6]

Starting seem like I'm clutching at straws now! However, this article is very interesting

http://enginedtc.com/p1161-citroen-c4

I would not take that site seriously at all. It is just a collection of generic OBD codes which have generic descriptions and the name of a specific car model attached. They couldn't even give a valid engine type for the C4. Does anyone here have a C4 with a turbocharged single cylinder engine with opposed pistons?

[Fake Concern]

I am now totally confused by this!
I finally got Lexia/Diagbox to work again after reinstalling Windows three times due to Lexia refusing to install without errors. Now I have these faults

So now a missfire? Could that be a failing Coil pack?
Also P1623-Engine torque given *1 What does this even mean?
Plus what was interpreted as intake manifold leak P1160, is now shown as incoherence between butterfly position and 1 wire/pressure

[xantia_v6]

If you look at the mileage and engine RPM where each of those faults occurred, how do they relate to when the car went into limp mode?

[Fake Concern]

If you look at the mileage and engine RPM where each of those faults occurred, how do they relate to when the car went into limp mode?

No idea, somehow this time the report didn't get saved, so I only have the photos. I cleared the faults and will drive it a bit before reading any codes again.

[Cutac]

Not going to be helpful, but could you please explain 'open the second intake on the air resonator at higher revs'.
Where is that second intake located? I thought there's just one pipe from the grille to the resonator and then from the resonator to the throttle body.

[Fake Concern]

Not going to be helpful, but could you please explain 'open the second intake on the air resonator at higher revs'.
Where is that second intake located? I thought there's just one pipe from the grille to the resonator and then from the resonator to the throttle body.

In the resonator box

http://www.aussiefrogs.com/forum/techni ... rtant.html

Just for Cutac, my VTS, LEZ

[Cutac]

Interesting, thanks
Is there a way I can test if this works?
Car is faultless on Diagbox, but still

Wheels on yours look nice, I guess they are quite a bit lighter than Resolfens?

I've got a picture of mine taken on Thursday. It was a rainstorm and I got very wet but it paid off, or at least I think it did

[Fake Concern]

Interesting, thanks
Is there a way I can test if this works?
Car is faultless on Diagbox, but still

Wheels on yours look nice, I guess they are quite a bit lighter than Resolfens?

I've got a picture of mine taken on Thursday. It was a rainstorm and I got very wet but it paid off, or at least I think it did

I agree
Don't know
I still don't know (mine always gives faults I didn't know it had on Lexia/Diagbox)

The wheels are Team Dynamics Pro Race 1.2 in 18 inch x 8 size and are a lot lighter than the resolfen when you pick them up. Seem exactly the same when driving though!

Great picture! Are you on Instagram?

[Cutac]

Really, no difference between wheels when driving? I would expect much lighter wheels to transform the car.

I agree about faults. My gives weird faults on Diagbox which cancel themselves out. When I switch automatic AC on, Diagbox/BSI records temperature sensor fault, but then immediately says the opposite. Weird, but I suppose it's some kind of a confusion for some reason

Thanks, but I'm not on the Instagram. I was thinking about it but realized no one would follow a guy taking pictures of Citroens

[GiveMeABreak]

Are you trying to say Citroen owners are all sad?

[Cutac]

Well, not much people like Citroen at all, and even less people would like to see photos of a c4 every few days

[Fake Concern]

Well, not much people like Citroen at all, and even less people would like to see photos of a c4 every few days

Lots of C4 fans on Instagram, have a look!

[Cutac]

You're not mad, man!
There's a huge fan base, and to make it better, a girl has a red Coupe and lives 100 kilometers from me

For real, I might just make an Instagram account. I'll have you as a follower. Probably...