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Lack of Boost - P0299 code - HELP

raptorbasher

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Joined: Jul 30, 2008 Posts: 8 Location: Bristol Posts Left: 3
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What Peugeot do you own?: 307
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Age: 29
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PostPosted: Wed 30 Jul, 2008 11:24 am Reply with quote
Hi All,

I had an Anti pollution fault come up and limp mode kicked in driving last sunday, and the car was like a pig to drive.

It is a 54 plate 307sw hdi 136 with 51K on it.

I know someone with a diag machine and we found two faults, fuel flap sensor fault, which I was able to get and replace quite easily, and P0299 turbo low boost. we reset the codes and it was really flat to drive - no turbo...

We did some tests such as checking the vacuum pipes at the three solenoids( two at the front of the engine and one at the top rear) and the vacuum seems to be around 700mbar steady. we pulled the hose from the intercooler to check if there was any pressure and there isnt very much flow. we also noticed the butterfly valves in the air doser were acting up, the lower bypass one was stuck ( also able to fix this but the problem remains)

I found a local garage who put it up on the ramps and we looked at the turbo ( what a sh*t to get at!!) and there is a diaphram actuator and the control rod moves, but  not by much, when you rev the engine. is this the wastegate control or the variable vane control? the actuator is a honweywell and has a vacuum pipe and an electric connector attached.

I dont know what to do because the main dealer in Bristol are really bad, to the point of being incompetent and of course very expensive.

Basically I have read that this could be...

particle filter blocked
pressure sensor faulty/waterlogged
egr valve
solenoid fault
vacuum leak
stuck wastegate
stuck turbo vanes

please cananyone tell me what to look at and check for?

thanks for any help!!

Tim
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Re: Lack of Boost - P0299 code - HELP

Mr_Cellexe

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PostPosted: Wed 30 Jul, 2008 5:27 pm Reply with quote
i doubt the turbo's are VVT's, so i'd assume the wastegate is playing up. have you tried unplugging the EGR valve at all?

P0299 doesnt show on any OBD list i can find. although it would be part of the Fuel and Air Metering (Injector Circuit)
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Re: Lack of Boost - P0299 code - HELP

raptorbasher

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What Peugeot do you own?: 307
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Age: 29
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PostPosted: Wed 30 Jul, 2008 10:21 pm Reply with quote
Hi,

I hae not checked the EGR, is it difficult to get at to remove it? can this give the antipolution faullt??

the P0299 code was confirmed as turbo low boost by the main dealer, and also on the ethos diag tool (Snap-on handheld)

I found the peugeot service box web protal and downloaded some exploded diagrams and the image sure does look like a VVT, and I thought these were fairly common on diesels nowadays.

I wonder if there is a blockage in the exhaust causing the lack of boost - like a collapsed cat or knackered DPF??

thanks again

Tim
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Re: Lack of Boost - P0299 code - HELP

Mr_Cellexe

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PostPosted: Wed 30 Jul, 2008 10:36 pm Reply with quote
most things to do with the CAT/DPF would show up on a diag machine (if not your center console display).

EGR valve is a blue plug. not knowing the engine i cant be sure of location tho.

VVT would depend on the model tbh, it's possible sure, just not heard much bout them being on the 307.
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Re: Lack of Boost - P0299 code - HELP

jaycee027

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PostPosted: Wed 30 Jul, 2008 11:23 pm Reply with quote
i would check the pipes again from turbo to eng just to be sure also check the vacume pipe to the turbo from the solenoid at the front of the engine !

it sounds like the pressure sensor is working ok as the turbo is switching on however turbo failers are common on this engine    i dont think  the turbo is variable geometry unless james corrects me  yet if it were then carbon build up can stop it functioning correctly
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Re: Lack of Boost - P0299 code - HELP

raptorbasher

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PostPosted: Thu 31 Jul, 2008 8:34 am Reply with quote
Hi all,

thanks for the replies.

The reason I thought it was VVT is the angle at which the contol lever goes into the housing, that is in the same axis as the turbo shaft, which is common for VVT control.

the engine is a RHR 2.0 136 HDI, the solenoid which feeds the vacuum pipe to the turbo is mounted at the top back of the engine, and the pipe holds steady vacuum even after engine switch off.

I am getting the antipolution fault on the MFD, and I have always been quite lucky not to get it before.

If i disconnect the EGR, what effect will this have? will it stay closed or open, sorry not sure how they are setup mechanically...I did read they sometimes get gunked up, can they be cleaned?

thanks

Tim
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Re: Lack of Boost - P0299 code - HELP

raptorbasher

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Joined: Jul 30, 2008 Posts: 8 Location: Bristol Posts Left: 3
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PostPosted: Thu 31 Jul, 2008 8:43 am Reply with quote
Hi all,

just found this quote from a review site...
Quote:

The 2.0-litre diesel engine that powers the 307 HDi is a 4-cylinder inline type featuring 4-valves per cylinder and is fitted with an air-to-air intercooler and a Garrett variable geometry turbo to improve torque output. These variable geometry turbos are rather clever little units, and feature small vanes within the turbo housing that can be actuated to improve or reduce exhaust flow in to the turbine. This improves response at both high and low revs and reduces turbo lag, and also negates the need for a wastegate.


so it could well be a VVT...

does anyone know if the cat collapsed or the filter was blocked, would the turbo become weak, but the car still drive??

Also, if the turbo needs to come off what is requirted to get at it, is it necessary to remove the subframe or lower the engine or can it be done in place??

thanks

Tim
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Re: Lack of Boost - P0299 code - HELP

Mr_Cellexe

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PostPosted: Thu 31 Jul, 2008 12:09 pm Reply with quote
interesting. could be on yours then! Laughing

CAT/DPF blockage would most certainly come up with an error code and dash light. symptons would be, the car put into limp home mode, rev limits to 3000 and very little power (basically it will get you home). The turbo will still spool in this mode.

depends on the model of the engine tbh. turbo at the front then not alot, turbo at the back then your in for a big bill! (autodata reckon 14hrs tool time)
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Re: Lack of Boost - P0299 code - HELP

raptorbasher

On the Grid On the Grid
Joined: Jul 30, 2008 Posts: 8 Location: Bristol Posts Left: 3
Status: Offline
What Peugeot do you own?: 307
How did you find Peugeot Central?: Google
Age: 29
Gender: Male

PostPosted: Thu 31 Jul, 2008 2:52 pm Reply with quote
Hi,

14 HOURS!!! Oh Crap!

Its at the back, its the DW10BTED4 Engine.

I just checked the pressure pipes from the exhaust and blew them out and the antipollution fault went away, but power is still poor.

I am beginning to think the turbo had failed. does anyone know somewhere near bristol that do turbo work without fleecing you at the same time???

thanks

Tim
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Re: Lack of Boost - P0299 code - HELP

raptorbasher

On the Grid On the Grid
Joined: Jul 30, 2008 Posts: 8 Location: Bristol Posts Left: 3
Status: Offline
What Peugeot do you own?: 307
How did you find Peugeot Central?: Google
Age: 29
Gender: Male

PostPosted: Thu 31 Jul, 2008 2:55 pm Reply with quote
Oh by the way does anyone know what this part is...marked 10, is it the catalyst??
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