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Discussion Starter #1
Hi, this is my first post ever so I hope I'm in the right place. I just bought a 2008 model 207 gti two days ago. It was driving well all yesterday then on the way to work this morning I had about 50% of the power drop off suddenly. The turbo is still whining but the car just feels gutless when it should be boosting? No dash lights have come on and engine still goes through the rev range smoothly, it just feels like somebody stole my turbo? It's booked into dealer for tomorrow morning. In the mean time any ideas for diagnosis?

Thanks.
 

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In every transaction there's a Zoober and a Zoobee, looks like both you and the seller have been a bit of both. You probably zoobed him on price, he probably zoobed you on quality.
No matter what, your Pug will be fixed and it'll be as good as new again, meanwhile he has sold a car that may need minor repairs at a price that gives yo the advantage.
Good luck with it, the 207 GTi is an amazing pocket rocket!
 
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Minor repairs? Hardly minor if its the dreaded Prince Turbo engine camtrain fault. That costs a fistful to put right and is probably why the last owner got shot.
 

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Discussion Starter #7
Quick update - peugeot dealer has advised me that the main issue is that the timing chain has stretched. This is annoying as the tensioner was changed 42,000 and the dealer that did it, did not measure the chain to check whether it was stretched which is apparently meant to be peugeot standard procedure. Subsequently, the engine management shut of the turbo and obviously vvt is out and it is running lean.
 

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^ With the 'engine management switching off the turbo' Why were there no fault codes? At the very least you should have received an "Engine management system faulty" error on the display.
 

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^ With the 'engine management switching off the turbo' Why were there no fault codes? At the very least you should have received an "Engine management system faulty" error on the display.
Not sure. The way it was described to me was because the timing is out the turbo isn't working/kicking in/shut off. Ill question them when I go back regarding the engine management error.
 

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I've spoken to a peugeot 'specialist' who says it is possible that a carbon build up in the engine is causing hotspots and hence pre-ignition which in turn could lead to a knock and the ECU pops up with a timing chain error. He said to try a carbon treatment and reset the computer. Anyone know whether this might work? I'd love it to be that simple but I have a feeling it won't be.
 

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In your cars chassis number you will have a 5 followed by 2 letters,cam you tell me what letters these are
 

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I've spoken to a peugeot 'specialist' who says it is possible that a carbon build up in the engine is causing hotspots and hence pre-ignition which in turn could lead to a knock and the ECU pops up with a timing chain error. He said to try a carbon treatment and reset the computer. Anyone know whether this might work? I'd love it to be that simple but I have a feeling it won't be.
No harm in trying it, it's a cheap minimally invasive procedure.

I would check the long term fuel trims. If they're significantly out then it could spell disaster indicating issues with timing. These engines are notorious for timing issues.
 
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The timing chain error comes up as its probably out of time more than carbon issues. Get the timing checked first.

Sent from my GT-S5690
 

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i also have just bought a 59 plate 207 gti and i have had the engine management light on and it came up as turbo boost pressure valve, the garage advised me the ecu may have been mapped, i had this checked and it is ok, since i have run the car on v power and have noticed an improvement but not much, i still have rubbish power any ideas would be great as i have only had it a short time and am very dissapointed with my new pocket rocket
 

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i also have just bought a 59 plate 207 gti and i have had the engine management light on and it came up as turbo boost pressure valve, the garage advised me the ecu may have been mapped, i had this checked and it is ok, since i have run the car on v power and have noticed an improvement but not much, i still have rubbish power any ideas would be great as i have only had it a short time and am very dissapointed with my new pocket rocket
If you have the EP6DTS engine built around 2007-2009 nothing will solve that problem except the new chain+tensioner+software kit. I had two cars with that problem and have written a lot about it here: http://www.peugeotforums.com/forums/207-36/207-rc-gti-chain-issue-timing-depollution-fault-random-loss-turbo-65929/

Get Peugeot to fix it for free and the problem should not happen again. If it is not fixed, the chain will keep stretching and the ECU will keep triggering safe modes (no turbo/blowoff valve whistle) at random times.

Allowing shops to keep changing stuff on THP150 and THP175 engines to "solve it" is a total waste of money as all (older) THP engines have that flaw.
 

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If you have the EP6DTS engine built around 2007-2009 nothing will solve that problem except the new chain+tensioner+software kit. I had two cars with that problem and have written a lot about it here: http://www.peugeotforums.com/forums/207-36/207-rc-gti-chain-issue-timing-depollution-fault-random-loss-turbo-65929/

Get Peugeot to fix it for free and the problem should not happen again. If it is not fixed, the chain will keep stretching and the ECU will keep triggering safe modes (no turbo/blowoff valve whistle) at random times.

Allowing shops to keep changing stuff on THP150 and THP175 engines to "solve it" is a total waste of money as all (older) THP engines have that flaw.[/QUO

how do i find out that i have this engine as i have now ordered for the air box to be repalced back to standard as i thought it may be that? If it is the timing how do i get them to replace this out of warrenty?
 

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how do i find out that i have this engine as i have now ordered for the air box to be repalced back to standard as i thought it may be that? If it is the timing how do i get them to replace this out of warrenty?
If you have a 207 GTI, then you have the EP6DTS engine (THP175, Prince architecture). Almost all of these engines have the design flaw with the chain/tensioners: Cold start rattle, loss of power, oil consumption, etc. The fix will vary a bit depending on when the engine was made. Some (like mine) will require the whole chain/tensioners,etc, others will just require updated ECU software and so on.

PSA will fix it for free if the car has less than 100.000km or 60 months. (Mine had about 45.000km and 5 years and was fixed for free).
Your garage will need to have the car in to get the fault codes from the diagnostics machines (take it there when you have the depollution fault and complain about random loss of power and rattle), which they then send to PSA who will approve. They order the kit (depending on the engine manufacturing date) and install it on a second visit.

These THP engines are quite fun, but they were a reliability failure. I'm hoping mine lasts another 50.000km now after the fix, but we'll see.

See http://www.largus.fr/actualite-automobile/moteurs-14-et-16-bmwpsa-des-problemes-en-pagaille-2319369.html for all issues with these engines. Might need translation as it is in french.
 

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Discussion Starter #19
Aaaaaaaaaaaaaaaand we're back

Sorry for the absence. So the outcome of all my issues was that I needed the timing chain/tensioner changed as well as the new software upload and all was well. I then had to repair the turbo oil feed pipe and exhaust manifold gasket also (AUD 700). Car has run smoothly for about 9 month.....and then.... I'm coming up out of a tunnel and there is a break in the traffic, I'm going about 60km/h and I pull out to overtake. As the car climbs in revs probably about 2700 - 3000 rpm mark, it suddenly hesitates and does a small burp...burp...power loss thing for a second and then keeps climbing all fine. I spoke to mechanic and was recommended that I should try an upper engine cleaner (de-carbon) treatment and if no better then we would go to the spark plugs. Lovely.... so I start the upper engine clean treatment and mid treatment the engine pollution system fault light on the dashboard comes on. Great stuff, now I need to figure out whether the engine just had a 'freakout' because of the product going into the vacuum hose and the car is fine or if there is actually a pre-existing problem with it or I broke something by doing this treatment. I've been keeping a spreadsheet of how much non-standard repairs (repairs other than regular services and replacements etc.) has cost me over the past year and it's becoming quite impressive. Does anybody know the potential reason that this light came on mid treatment? Cheers.
 

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Discussion Starter #20
If you have a 207 GTI, then you have the EP6DTS engine (THP175, Prince architecture). Almost all of these engines have the design flaw with the chain/tensioners: Cold start rattle, loss of power, oil consumption, etc. The fix will vary a bit depending on when the engine was made. Some (like mine) will require the whole chain/tensioners,etc, others will just require updated ECU software and so on.

PSA will fix it for free if the car has less than 100.000km or 60 months. (Mine had about 45.000km and 5 years and was fixed for free).
Your garage will need to have the car in to get the fault codes from the diagnostics machines (take it there when you have the depollution fault and complain about random loss of power and rattle), which they then send to PSA who will approve. They order the kit (depending on the engine manufacturing date) and install it on a second visit.

These THP engines are quite fun, but they were a reliability failure. I'm hoping mine lasts another 50.000km now after the fix, but we'll see.

See Moteurs 1.4 et 1.6 BMW/PSA : des problèmes en pagaille for all issues with these engines. Might need translation as it is in french.
Yep. you're spot on Spiff. Mine was doing all of the above prior to the chain etc. being replaced. It is a wide spread Prince Turbo engine problem so I've heard.
 
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