My Honda Civic diesel often cranks but doesn't turn over - this happens mostly when hot. It has also developed a problem where it loses power while driving causing me to pull over. After a while the car restarts - but this is very dangerous. The glowplug warning light comes on intermittnently.

My mechanic has changed the crankshaft sensor and fuel injectors but this has not corrected the problem. He suggests it might be a problem with the fuel pump but more likely the ECU.

My only option is to take the car to Honda - but before I do, is anyone aware of this problem and what the solution might be (and the likely cost to do so). Thanks for your help.