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loud bang followed by Depollution system faulty
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StirlingC6   
Sat Jul 01 2023, 12:04am
Joined: Nov 04 2022
Member No: #5131
Location: Ontario
 Picked the 2007 model year 2.7 HDI up today after an oil change, A/C recharge and replacement of one of the A/C system pipes. All seemed fine for the first 7 or 8 kms.

While going up a hill there was a loud bang under the car, followed by a partial loss of power, and the message "Depollution system faulty".

I was able to get the car home with sometimes full, sometimes partial power.

Any ideas regarding this strange occurance?
MGmike   
Sat Jul 01 2023, 07:05am
Joined: May 21 2017
Member No: #3151
Location: South Queensferry
 It will need to go back to the garage for a code read but lets hope it's something simple like the air intake pipe not fitted correctly and coming off the inlet manifold!
onthecut   
Sat Jul 01 2023, 07:46am
Joined: Sep 20 2016
Member No: #2793
Location: West Mids
 As MGMike says, inlet manifold pipe is definitely worth a look. It's also a really easy one to check -- at the top end, anyway.

The attachment part is the first piece of plastic you see if you look at the engine directly across from the expansion bottle. It has a big wire spring clip on the engine side and the air supply hose on the bottom, secured by a Jubilee clip, just by the chassis rail.

On mine, it required a significantly firm, square push to get the spring clip to properly seat on the manifold spigot. If it's not -- it blows off. (You don't need to ask how I know. )

Mike.
StirlingC6   
Thu Jul 06 2023, 12:50am
Joined: Nov 04 2022
Member No: #5131
Location: Ontario
 Turned out it was the line to the intercooler. When they replaced the A/C pipe apparently they didn't tighten that one back up.
cruiserphil   
Thu Jul 06 2023, 09:29am

Joined: Jan 24 2010
Member No: #38
Location: Celbridge
 Hello StirlingC6,

Thanks for the update!

Best regards,

Phil C.
 

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