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Discussion Starter #1
Hi, I have a rather strange fault with my 307 HDI 110. Im getting anti pollution fault coming up on the dash but only when I am at motorway cruising speed. I can be going along fine but after say 20-40 miles it flashes that up on the dash and I got no boost and no traction control. As soon as you turn the car off and back on everything is back to normal but the check engine light stays on for around 2 days after. I had it scanned by a mate. It's coming up with 7 Faults. P1138, Fuel Pressure Regulator
P0380 Pre Heating Relay Circuit
P0235 Turbo Pressure Signal
P1000 CAB Bus
P1458 Coolant Solenoid Valve
P0246 Turbo Preasure
P0100 Flow Sensor Signal.
Car is stock apart from no DMF and no DPF
I've tried several things to sort it like a new MAP sensor, air flow meter cleaner.
All hoses are in good condition and are connected. Really drawing a blank on it cause I can't understand why it does only when I am going along at 70. Any help would be really helpfull. Alex
 

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Discussion Starter #3
Thanks Gibbo! I'll try a new MAF tomorrow and take if for a run see what I get. Can you think of anything else that that could be causing it?
 

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I had the exact same problem as you
Turned out the turbo pressure vaulve was duff. £50 from pugs and 5 mins to change it and it's been like a new car since and pulls like a train !!!
 

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Discussion Starter #7
Right I came up with an excuse to go down to my aunts this weekend and the check engine light was off when I set off. After 70 miles it came up ESP/ASR not functioning and the anti pollution was also up there on the dash. I stopped at a services and as soon as I turned the car back on everything felt normal and but the the light was stayed on. I have replaced the MAF and taken it for a run but the light is still staying on! can't seem to get rid of it now and now the turbo doesn't seem to be coming on as strong as it was. Really doing my head in now cause a new MAP sensor was £40 and new MAF was £80 and when this fault comes on whilst driving it's really hard to overtake anything and stay at a decent speed. Any more help would be great
 

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Check the turbo boost solenoid. !!!!

Everything points to that. !!!
It's at the font/bottom of the car down by the radiator. There is 2 other solinoids there so swap 1 over and see if it works.

My car was the same when the anti pollution warning came up. It was limited to 3000rpm and had no guts in it !
 

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you say no DPF/FAP? was this removed and turned off in the bsi?

another thing is check the wires on the turbo solenoid as these have a habit of breaking up the loom, but as the others say it looks like the solenoid you could swap it over with the egr one and road test it and see what it feels like
 

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Discussion Starter #11
The DPF/FAP was removed by a chap at a garage that specialised in DPF and EGR removal. As soon as the fault came up he was the first person I rang when it happened and he said it was a waste a time him me driving up to him cause he said any car he had ever done had never been come back to him with a fault caused by what he had done. He seemed very confident and is rated by may people that have had work done by him. Could the DPF/FAP be causing this issue? Surely if it was a problem with a solenoid it this fault would come up as soon as I come on boost for example in second or third gear. It only ever does it when you've been at 70MPH for say 20-40 miles. Changing that Air flow meter seems to have done more harm than good cause now the check engine light won't go out like it normally does and the boost is coming on in different strengths and at different times in the rev range. One thing leads me to think it's something then something else happens which leads me to think another thing
 

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if hes done it before and well known for it then hes done it right just ive seen guys that remove it don't do it from the bsi as well,

the anti pollution faults can be a number of things not just the FAP/DPF side

egr and turbo solenoids will give you the low power and codes tho that's how I knew mine was going bad morring time the car was nice with power but come after a few hours driving the turbo was weak then I had the fault ESP/ARS anti pollution faults got home and had a few codes with the turbo measured to low

had a spare solenoid and plugged it in were the turbo one was and bingo the car was back on power all day cold and warm :thumb:
 

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Discussion Starter #13
Sounds like the solenoid then... Never removed them before or know how to. Just checked the haynes manual and couldn't see anything that refers to them. Are they mounted just by the transmission and the is 3 of them i think? Towards the bottom end of they engine and a large cluster of wires connected to them? how do you get them out? is it simple?
 

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on yours there are 4! Turbo, EGR, Front intake flap, Rear intake flap,

they are on the front of the engine right down near the air box you will see a blue plug this is the EGR one, if you look at your oil filter you will see your turbo one its a grey plug, they are on with two 10mm bolts before you remove them try and mark them or take a picture before you remove the pipes so you
don't wire them up wrong, then swap them over and road test the car

its a simple job if your handy with a spanner :lol:
 

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Discussion Starter #16
Swapped over the valves and took it for a 20 mile run. Still feels the same as before so no increase in power.. The real test will be when I drive home tomorrow and see if they array of lights come back on again after i've been going for a while. What would you guys say to do next if the lights still come on?
 

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Discussion Starter #19
Well I've double checked everything and the photos you have shown are exactly how I have mine. I took photos myself and marked with coloured tape so I am positive i've got them right. Thanks for photos though cause now I know i have got them the right way round. I did a run from Selsey back home to Burton in the midlands and no problem what so ever. 195 miles and it ran far better than has ever done. Here is the kick in the teeth.. went down the A38 earlyer and it came on again. Why would it come on after a short distance now and not a long one? is it best to replace them both now or is there something else I could try?
 

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good idea with the tape! ah could be that both are faulty do you have access to planet? and try and clear the codes and road test and see what comes back also live data would be great to look at as well if you can do that,

but if you say its ran better that before would you say you can feel the turbo kick In more or same? what you could do it unplug the EGR one the blue plug the outlet one not the vac one and road test it oh you would need to
block the end of the valve to make sure there is no vac leak, also you could try and see if all the pipe ends look in good order as if they are split this can cause you faults to with leaking.

can I ask how your brakes feel? as if they are not good this could be a leak as the vac pump runs the valves
 
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