Menu toggle

Low Boost

berg944

berg944

New member
If I accelerate quickly the car tries to cut out at 3000 rpm until I take my foot off.

If I accelerate moderately when I get to 3500 rpm the engine sounds like its hit a rev limiter. As above no boost is shown on the gauge.

If I accelerate very slowly the engine runs smooth at high revs but the boost only goes to 0.2 bar

I have already changed AFM,TPS,KLR and DME

I have studied Clark's many times but always open to ideas.

Mike[:'(]
 
A quick check on wastegate condition is too start from cold and feel if the pipe from the wastegate to exhaust system heats up. It should stay cool at tickover as the exhaust gases should all pass through the turbo and out the rest of the exhaust system.
Tony
 
FIXED[:D][:D][:D][:D][:D][:D][:D][:D][:D]

I am a little embarrassed to admit what it was[:)]

I Remove the banjo bolt connector from the back of the intercooler pipe as Andrew suggested, no difference.

Put the car on ramps to check the waste gate and thought I would check the intercooler as Fen had pointed out that low boost would alter the mixture.

There it was........a pipe disconnected from the intercooler[:)][:)][:)][:)][:)][:)]

In my defence my intercooler has twice as many joints than standard as it has been fitted low down for more airflow. I could only see the bottom joints from under the car.

This joint must have started leaking about 6 months ago when I first experience a triggered knock sensor, about 3 weeks ago it must have come off completely.

Just off out for more testing.........

Mike[:'(]





 
The car is better than it has ever been! I am thinking this problem started before I purchased the car.

Its a little bit quicker, more torque and a lot smoother.

The idle is perrrrrrrrrrrrfect

I have not put the boost enhancer back on yet, I think I will leave this until the spring as the new rubber on the back was just breaking away on standard boost.

Mike[:'(]

Many thanks to Fen, Andrew and 944Turbo
 
Good news Mike [:)]

I'm intrigued about this intercooler of yours? Is it a standard one, but lowered, or is it a custom build?

The standard intercooler has inlet and outlet clearly visible at the top of it.
 
Good to hear that it was something simple and free, rather than complex and expensive [:D]
 
I'm intrigued about this intercooler of yours? Is it a standard one, but lowered, or is it a custom build?
Click to expand...

Standard and lowered........... up side down and back to front IIRC

No Aircon to get in the way.

Mike[:'(]
 
Are you sure? I can't imagine why anyone would run a standard one back to front as the inlet and outlet would face forward and need a 180 degree bend to get back to the turbo outlet and throttle body, which would make the pipes longer than necessary when you want them short. Then again did you say at Oulton it is in front of the rad in which case the connections would have to go forward or through, which might not be a great idea for the coolant...[FONT=verdana,geneva"] [FONT=verdana,geneva"]If that is the case then surely the standard position would be better?[FONT=verdana,geneva"]
 
Here it is, on the home made rusty brackets!

B849C69BBA0542A5870B7C3BE97F7B6F.jpg
 
You must log in or register to reply here.

Posts made and opinions expressed are those of the individual forum members

Use of the Forum is subject to the Terms and Conditions

Disclaimer

The opinions expressed on this site are not necessarily those of the Club, who shall have no liability in respect of them or the accuracy of the content. The Club assumes no responsibility for any effects arising from errors or omissions.

Porsche Club Great Britain gives no warranties, guarantees or assurances and makes no representations or recommendations regarding any goods or services advertised on this site. It is the responsibility of visitors to satisfy themselves that goods and/or services supplied by any advertiser are bona fide and in no instance can the Porsche Club Great Britain be held responsible.

When responding to advertisements please ensure that you satisfy yourself of any applicable call charges on numbers not prefixed by usual "landline" STD Codes. Information can be obtained from the operator or the white pages. Before giving out ANY information regarding cars, or any other items for sale, please satisfy yourself that any potential purchaser is bona fide.

Directors of the Board of Porsche Club GB, Club Office Staff, Register Secretaries and Regional Organisers are often requested by Club members to provide information on matters connected with their cars and other matters referred to in the Club Rules. Such information, advice and assistance provided by such persons is given in good faith and is based on the personal experience and knowledge of the individual concerned.

Neither Porsche Club GB, nor any of the aforementioned, shall be under any liability in respect of any such information, advice or assistance given to members. Members are advised to consult qualified specialists for information, advice and assistance on matters connected with their cars at all times.

Porsche
Lockton
Pirelli
Officially approved
Oracle Finance
WEX Esso
Collecting Cars
Archant Dialogue
Back
Top