Clio 11 diesel 2001 - Engine won't start when interior is hot. - pullgees

When the interior gets baking while the car is parked in the sun, the engine won't start but does turn over. As it's diesel it seems like the fuel shut off valve is not opening. The remedy is to open all the windows and a door to allow ventilation and the interior to cool down a bit. Then after a few minutes the engine will start.

All the relays are far as I know are under bonnet so I can't attribute the cause to an over heated relay.

Googling the problem it seems that Hondas used to have this affliction.

It's a mystery, what could it be?

Clio 11 diesel 2001 - Engine won't start when interior is hot. - hardway

A mystery indeed as the ECM is under the bonnet so unafected by cabin temp'

All I can suggest is check the power/grounds to the ECM.

Might be better if you called in an autospark.

Clio 11 diesel 2001 - Engine won't start when interior is hot. - pullgees

Googling around a bit more, it could be the receiver ring on the ingnition switch. It's definitely a cabin temperature problem and this could somehow exacebate a fault in the ring.

Clio 11 diesel 2001 - Engine won't start when interior is hot. - pullgees

Solved. Faulty ring receiver transponder. Replaced for £10 on ebay.