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Discussion Starter #1
Hi All,

I'm new to the forum as i've just bought a problematic 807. 2.0 HDI EXEC.
When I bought it, it had the following issues:

1. Battery flat.
2. Fuel additive Low message on dash.
3. Fuel Filter blocked message.
4. Turbo issue when cold. Once engine starts to warn up, Turbo is fine.


1. The flat battery was caused by the alternator not working. Brought a brand spanking new one.

2. Fuel Additive Low message was due to the counter reaching zero for the fuel additive tank, I topped it up and I am in the process of installing PP2000 to reset the counter. The take was already half full! Someone must have been here before.

3. The fuel filter blocked message has nothing to do with the fuel filter but the dpf filter in the exhaust. I reluctantly forced a regeneration. Never doing that again! Revved the nuts off the poor thing but a big cloud out of the exhaust :) That message has now gone after a ECU code reset and hasn't come back.

4. Turbo issue. This one has got me stuck for ideas. Maybe pp2000 can spread some light on it? What happens is, when I drive it from cold in the morning, there is no power and it will just about rev to 3000rpm. once the temp gauge reaches 60degC, off she blasts.
It is definately temp related, on a hot day, the distance driven till the turbo kicks in is vastly reduced. Any Ideas would be much appreciated.

5. I have a friend breaking a 2.2L HDI if there are any common parts I can rob. His cam belt went. screwed the engine. Grrrrrr but great for spares ;)

Regards

Paul
 

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Hi GTO_Paul,

I'm no expert at these things but I've had 3 807s over the years.

As for the turbo issue, when was the last time the oil and filter was changed? Due to the lack of maintenance the car has had, you may have oil well past it's life and full of sh*t. Subsequently the oil isn't getting pumped round to the turbo properly. When it gets warm the oil thins and manages to get to the turbo. Correct grade of oil needs to be used too.( 30/5)

Grumpy
 

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Discussion Starter #3
Hi GTO_Paul,

I'm no expert at these things but I've had 3 807s over the years.

As for the turbo issue, when was the last time the oil and filter was changed? Due to the lack of maintenance the car has had, you may have oil well past it's life and full of sh*t. Subsequently the oil isn't getting pumped round to the turbo properly. When it gets warm the oil thins and manages to get to the turbo. Correct grade of oil needs to be used too.( 30/5)

Grumpy
Thanks for the reply Grumpy

The turbo is spinning, I can hear it whistling, just definately no boost. Its as if the wastegate is open. I'm not a diesel specialist but I know about turbos as I have a Mitsubishi GTO that I'm always tinkering with and i'm a maintenance engineer in a car factory. I think this may be a bugger to find.
It will be having an oil change soon, so lets hope you're right. I'll let you know.
 

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I have hear that sometimes if you weld exaust you can screw computer and it need some time to adjust itself. It have happend to me. I have made correction on exaust and next thing i turned engine on and there is no power?! Now one week have past it is better but still sometimes no power.
I have found that if i turn cruze control on in 4 of 5 gear and keep pressing + that the power returns. At first it start to twitch but just keep on pressing + button and power returns for some time.

Then i go on highway and use this method.

Or try to move by hand before you start engine, valve shaft on turbo (you will have to go underneath or remove right wheel). Bring it in and out about 20x. If something is stock this will help it and engine will have power from beginning. This method will help you to locate problem more precisely.
 

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Check the diaphragms in the two doser valves and associated pipework/solenoids.

The ecu closes the intercooler doser flaps when car is cold to speed up warmup if rear flap is not opening when then engine is cold and intercooler valve is also closed then engine will be strangled
 

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I agree i would be looking at vacuum in general

As for the 2.2 the engines are actually different even though they look the same lots of changes turbo head castings etc gearbox also different as the 2.2 belhousing is bigger

Most other parts of the car are the same though.
 
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