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2.7 HDi recovering from minor surgery.... |
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e3steve
 
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   Member No: #1163
Location: Warsash, Hants & Palma de Mallorca, Spain |
Well, I returned from my work trip to Spain this week, finding my requisite parts waiting for me. Needless to say I couldn't wait to pull on the old romper and open the bonnet. I'd already vacc'd out the air distributors:  and scraped out this sooty crud:  from the butterfly housing, after the complete depopulating it of the turbo pressure sensor, the EGR spigots and the throttle stepper motor. I'm guessing this particular Citroën press car hasn't been driven hard in quite a while! The necessary processes which contributed to the convolution of the repairs amounted to the replacement of the fuel return pipe ass'y a) from the injectors to the fuel/coolant heat exchanger [beneath the coolant output tank -- i.e. thermostat housing] via the fuel temp sensor [clipped in the vee of the butterfly housing] and b) from said heat exchanger to the return pipe system on the other side of the engine. These components just started breaking up, brittle from 85,000 miles of underbonnet temperatures, as soon as they were touched! Also found to be decaying were some of the flexible split-sided conduit wrappings for the wiring harness's various excursive connectors. I've picked off the leprosy here and re-covered the exposed tails with new, slightly larger conduits. The EGR spigots, which intrude into the butterfly housing, were so crudded-up with baked soot, that they were unrecognisable as the same components, once poked & scraped clean! QUESTION: has anyone noticed an oily film inside their intercooler pipe, on the r/h/s of the engine and which connects to the "air conduit" -- duct -- to the butterfly housing? I'm wondering if this oil may be contributing towards the sooty bake that the engine seems to have cooked up. I've filled the cooling system with water for the time being as, if any leaks transpire or, worse case, if the coolant starts to disappear without trace, then I don't wish to waste any more of my hard-earned until I'm certain the head gaskets haven't been compromised. But, so far, a hundred miles or so into road testing, all seems to be well. Except for (wait for it.....) the fact that the OBC is now suddenly reporting:  Grrrrrrrrrr! 
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magicands
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  Member No: #1021
Location: Coventry, Warwickshire |
Welcome to the wonderful world of C6 ownership. You will start saying to yourself (I guarantee it) "What will fail today?" |
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BruceB
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  Member No: #234
Location: Hampshire |
magicands wrote ... Welcome to the wonderful world of C6 ownership. You will start saying to yourself (I guarantee it) "What will fail today?" As someone who wobbled badly, on reading the tales of woe on this forum, and damn nearly wimped out and went for an Audi, I have to say that I have had 5 months and 6,000 miles of faultless performance from my car. The only idiosyncrasy has been the occasional reluctance of the cruise-control to engage. That is cured by the in-out-up-down solution. Otherwise it has been a delight. |
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e3steve
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Member No: #1163
Location: Warsash, Hants & Palma de Mallorca, Spain |
Thanks guys! I'm aware that all won't be rosy all the time; I was hoping to get to actually drive it sometimes, though..... The suspension pump is failing to put in an appearance when the car is unlocked or the key is switched on, but the fuse checks out OK. 
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cruiserphil
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  Member No: #38
Location: Celbridge |
e3, Can you get the car to change levels to full height while standing still? This will test the pump and you should hear it running! I wonder if a faulty level sensor could cause this problem? You would need to hook up Diagbox or Lexia for this. The good news is once the car is showing a fault message it knows something is wrong and the diagnostic should pinpoint this. Screen message suggests a height issue or missing information and that's why the car requests limiting speed! Regards, Phil C. |
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e3steve
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Member No: #1163
Location: Warsash, Hants & Palma de Mallorca, Spain |
Thanks Phil. No, no change in ride height when demand is placed; although the display reports Intermediate / 25mph, the car doesn't move. No pump running at any time, now, and the ride height is almost down to its lowest level and as bumpy as a kart! I'm reserving the remaining pressure to get it to my local dealer this week...... (sigh......) | ||
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Cactus
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  Member No: #373
Location: sydney |
@Magicands, Every time I start the C6, I have to cross my fingers that nothing will go wrong. It's like a lottery now, so unpredictable. Nowaday I actually afraid of driving the C6. I have 3 cars, a BMW X5, a Honda Civic(10yrs old)and the C6. My vehicle of choice atm is the Honda. The C6 is no longer my pride and joy. |
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e3steve
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Member No: #1163
Location: Warsash, Hants & Palma de Mallorca, Spain |
@Cactus, I am truly hoping I can overcome the problems; I just love the car! @Forum, the story so far: This morning I pulled off the front bumper (huge THANK YOU to C6Dave, et al, for the removal instructions which Google displays upon keyword searching -- this forum is saving me from a box of broken bits!) and whipped out the o/s headlight. No voltage reaching the pump's main supply connector. So I earthed out the motor's upper terminal and applied direct voltage to the lower one, via my Fluke DMM's 10-Amp circuit, from the jump-start battery terminal on the engine bay l/h/s, unlocked the car - nada. Turned on the key - still nada. Started the engine and the pump whirred away nicely. Current draw for the suspension pump is 10Amps>, as my Fluke was wheezing under the strain, so fuse G33 in Box B (glove box, upper rail) cannot possibly be the main fuse for the hydraulic pump. Looking deeper now..... |
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magicands
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Member No: #1021
Location: Coventry, Warwickshire |
Cactus wrote ... @Magicands, Every time I start the C6, I have to cross my fingers that nothing will go wrong. It's like a lottery now, so unpredictable. Nowaday I actually afraid of driving the C6. I have 3 cars, a BMW X5, a Honda Civic(10yrs old)and the C6. My vehicle of choice atm is the Honda. The C6 is no longer my pride and joy. Far to many people in this forum who won't here a word against the C6, but not me, I'm not a fan at all, just lumbered with it to be honest. |
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Trainman
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 Member No: #86
Location: Penwortham |
I suspect the suspension just needs to be reset using a Lexia or Diagbox. I'm thinking along the lines of the car 'thinks' it's been suspended without supporting the wheels, therefore the car won't move up and down, because it doesn't know when the centre level is......... I could be wrong...... |
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C6Dave
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 Member No: #1
Location: Northumberland |
Trainman wrote ... I suspect the suspension just needs to be reset using a Lexia or Diagbox. I'm thinking along the lines of the car 'thinks' it's been suspended without supporting the wheels, therefore the car won't move up and down, because it doesn't know when the centre level is......... I could be wrong...... Well disconnecting the battery for 15-20 minutes could maybe force a reset of everything. It may just clear the fault log and get the car up and running again. |
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Hattershaun
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 Member No: #320
Location: Bedfordshire, UK |
I witnessed the followed last week at the Citroen specialist that looks after my cars. A C6 would not raise it's suspension from the lowest level, evening though the car's hydraulic pump was running, wherever the ride height switch was positioned. A trolley jack was put under the front of the car and pumped up to raise the car a bit, thereafter the car's behaviour returned to normal and it raised/lowered itself as expected. Before this the car had been on a four post lift with all four wheels hanging freely in the air. |
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mark28
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  Member No: #102
Location: Hampshire |
Beautiful cars but not robust enough . 10 more months I can get rid of mine and get something that is by no means as pretty but will be much more reliable | ||
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e3steve
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Member No: #1163
Location: Warsash, Hants & Palma de Mallorca, Spain |
Topic and solution continues here. | ||
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