XC70: Engine - D5 won’t start when hot, sometimes

Alecm · Jun 26th, 2018, 14:31

I am on holiday in the middle of France. Twice on this holiday the engine has refused to start. The first time the car also shuddered a lot. The engine seems to be turning over normally. There are no error messages. The first time the car was very hot, towing a small caravan in a hilly area. The fan ran on at max speed for several minutes after turning the ignition off. Two hours later, after the car was loaded onto a tow truck for recovery, a last attempt was made to start it, and this was successful.

A week passed and the car was faultless including many hot starts. Then again it happened. Again towing, a hot day but engine not so hot and no fan. Not so shuddery this time. An hour later and awaiting recovery the 28th attempt to start it (!) was successful. Once again car just fine again.

The car is 2011 MY XC70 with 79k miles and full main dealer service history including only about 1,000 miles ago. I phoned the dealer and they have no idea what the problem is.

I am using Total Excellium diesel all holiday.

A helpful stranger showed me how to reveal error codes. This revealed 040 which might not be helpful as it is to do with air recirculation.

Anyone have any ideas?

Alec

Jun 26th, 2018, 14:31	#1
Alecm Junior Member Last Online: Oct 29th, 2018 13:10 Join Date: Sep 2007 Location: Ascot	D5 won’t start when hot, sometimes I am on holiday in the middle of France. Twice on this holiday the engine has refused to start. The first time the car also shuddered a lot. The engine seems to be turning over normally. There are no error messages. The first time the car was very hot, towing a small caravan in a hilly area. The fan ran on at max speed for several minutes after turning the ignition off. Two hours later, after the car was loaded onto a tow truck for recovery, a last attempt was made to start it, and this was successful. A week passed and the car was faultless including many hot starts. Then again it happened. Again towing, a hot day but engine not so hot and no fan. Not so shuddery this time. An hour later and awaiting recovery the 28th attempt to start it (!) was successful. Once again car just fine again. The car is 2011 MY XC70 with 79k miles and full main dealer service history including only about 1,000 miles ago. I phoned the dealer and they have no idea what the problem is. I am using Total Excellium diesel all holiday. A helpful stranger showed me how to reveal error codes. This revealed 040 which might not be helpful as it is to do with air recirculation. Anyone have any ideas? Alec

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