The problem returned after a couple of days so I accepted defeat and bought another ECU. The problem went away again so I refitted the old ECU. The problem came back. So, it was the ECU after all. No surprise, I suppose. Thanks to all who offered their ideas and advice.

Ok, I've now replaced the water temperature sensor and the thermostat. The engine has been running hot (needle just below red on the gauge) so I replaced the 82 degree stat with a 74 degree one. I also retarded the timing a bit and reset the mixture screw on the AFM (now 2 and a half turns back...

Don't know about the transducer but I've had the LR since last summer and this problem only started in December - just as the weather got really cold here in Devon. I've ordered a new temp sensor and thermostat (it also runs hot - forgot to mention that earlier) because apparently the sensor can...

Ok, thanks. I'll try these.

Hi, I have a Series ii with a Rover V8 EFI engine. The engine code on the block says it's a TVR350i unit (!) with 9.75 cr. The problem is that it starts fine but once hot, the idle cycles up and down, like someone was tapping the accelerator pedal rapidly. On the road, it backfires and surges...

Don't use All Wheel Trim. I bought a truck cab tilt last year. Within two months the canvas was washed-out (milky white marks), the edge binding had faded and the strap stitching was loosening. They won't answer my letters or emails so I'm claiming a refund via my credit card.