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Old 14-01-13, 04:53 PM   #1
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Default 307 Hdi 110 low turbo pressure

Hello
I'm a new member here And a new 307 owner, I had my car on peugeot planet due to the anti pollusion light coming on, the computer said that I have low turbo pressure and will go into limp mode,when I put my foot down going up a hill this happens, ive read a few threads on here that has said check the solenoids but I'm not 100% sure on what I'm looking for, has anybody got a step to step guide or any photos to what I'm looking for that would be a massive help.
Thanks for your time
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Old 16-01-13, 09:22 AM   #2
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It's one of the 4 objects seen ion the bottom left of the picture, located in the same area as your oil filter.
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Old 16-01-13, 11:32 AM   #3
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ThAnks gavcol69, this has reAlly helped me out, I will try and have a quick look at them before I go to the garage tomorrow to see if I have anything loose around there.
Would there be any tell tale signs if one is broke or not working?

Thanks tom.
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Old 16-01-13, 12:13 PM   #4
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No there electrical so it'll be an internal problem, not something you can see. What is worth a check though is the vacum pipes that come off the electro-valve. It's common for them to split. I think you can disconnect at elctro-valve end and suck down them. Trace the one that goes to the turbo, this controls the Vane pitch of the turbo. If the pipe can't hold a vacum your vane's will stay closed and turbo wont spin up. Can you hear turbo when driving? Don't think it will cause an anti-pollution fault though. You getting any smoke or anything? Could be your DPF. If DPF is clogged, exhaust can't get out as quickly as they need to. This can stop turbo from working too - if exhaust can't flow over turbo at speed, no turbo spin up.
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Old 16-01-13, 12:16 PM   #5
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I'm not sure how you can test the solenoid but whilst you're under the car check all the vacuum pipes as splits or any loose connections could cause low turbo pressure.

The solenoid you're looking at is the lower one.
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Old 16-01-13, 03:11 PM   #6
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I don't get any black smoke and when you rev the car you can hear the turbo, it's manly when I go up a step hill it goes into limp mode, when I took it to a peugeot specialist he said he will have to get the car on a ramp and have a look.

Gavcol69 which part on the diagram is the electro valve?

Thanks for your time.
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Old 16-01-13, 03:22 PM   #7
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Probably your DPF, I'm def no expert. If the garage tells you it's your DPF and they going to charge you a tonne of cash I would ask some guy's on here about removing it. It will probably cost you less.
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Old 16-01-13, 05:14 PM   #8
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The ecu is storing a low boost reading as a fault but that is not the problem mearly a symptom

You may have a faulty solenoid but easiest test is just replace it im afraid they are not that expensive

Could be vacum loss you need a vac gauge to test a boost gauge does fine for this you are looking for vacum at the pipe that joins to all 2/3 solenoids this comes from the vacum pump should be a steady reading both at idle and when reved

could be a boost leak
could be boost sensor seeing too much boost and shutting it down

Could be that the Particulate filter if you have one is not regenerating meaning turbo cannot produce enough boost

Good luck
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Old 16-01-13, 05:34 PM   #9
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Thomasjw, all the best with it and try and let us know if/when you manage to resolve it.

I am trying to trace the cause of my low pressure. The turbo cuts out going up hill but no eml light.

So far I have found a split 90 degree rubber connector and have tested the vacuum reservoir which is good.

I will probably replace the solenoid once I've visually checked everything else.
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Old 16-01-13, 07:44 PM   #10
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Thanks for all the posts I really appreciate them, i have got a rough idea now of things I'm going to look at and try to see if it will change it, I'm booked into the garage tomorrow so I will let you all know how I'm getting on.
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