I'm trying to diagnose a major issue with my brothers car.

It occasionally wont start but when it does it will idle fine.

The symptoms start when you drive away. Under full throttle the car seems fine until you let off. Driving normally and after backing off the car will cut out randomly, revs will slowly die similar to lambda issues. While this is happening both the rev counter and speedometer bounce around like crazy. The car sounds very rough and smells rich. It will also cut out and stall when pulling up to junctions.

So far I've tried changing the ECU, the relay behind the ECU, the cam and crank sensors and the lambda. I've also checked the voltage on pin 35 of the ECU which has battery voltage even while it's cutting out so it seems power to the ECU is fine.

Any suggestions as to where I should be looking next?

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Pics of my 6
My 6 on Google Video thanks to coxy306Xsi

Or replace it.

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R H Davey Welding Supplies. I sell new and used welding equipment in the Hampshire area. I take on welding jobs in the evenings, ally casting repairs are one of my specialities but I can weld pretty much anything. PM me with your requirements.

Some of my services: (See my for sale threads)
Engine mount/chassis repair
Solid Beam Mounts BACK IN PRODUCTION
Harness bars

Earth cables all ok?

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Senior Test Automation Engineer for the 306GTi6 Owners Club Forum

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Tried the ICV from Roo's 6 and it made no difference, have put a direct earth from the battery to the body to bypass any faulty earths. Haven't got another MAP sensor to try but I think that might be the next thing to test.

Read the Ecu with a fault code reader and received this fault



Unable to find any clue of what this code means

Thanks for the ideas

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Onward to the Edge!

Which Map sensor do you need ?

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No more peugeots

Snap - no more RS clio

Now Ph1 RS clio

It's the older type, mine is on the newer type unfortunately so it's one of the few things we can't just swap. It seems likely that it's more than just a sensor though, none of the sensors would cause the dials to go haywire surely??

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Pics of my 6
My 6 on Google Video thanks to coxy306Xsi

this one?

I have one as I bought it in error.

Give me a shout if you want it.

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No more peugeots

Snap - no more RS clio

Now Ph1 RS clio

Unplug power steering sensor bud it's down the front of the engine ? Sounds silly but causes all sorts of running issues when faulty ?