thanks to you all for your replies, everything makes sense. I have replaced the coil and amplifier and moved them to the nearside inner wing which is as far away from the exhaust manifold as is possible and I'm awaiting delivery of a new thermostat and gasket which I intend to fit tomorrow. I...

I successfully fitted a 3.9Efi ( from a 96 Discovery) into a Lotus Excel about three years ago. I went on a leisurely run last September and found it was overheating although all ancilliaries are new. The gauge was off the scale, the heater was working well. It has a new aluminium radiator which...

Thanks for the welcome , it's nice to feel at home. The engine temperature sensor sounds like a good starting point especially as the temperature gauge was erratic and "stuck on the stop" sometimes but checking the engine it wassn't so hot thaat you couldn't touch the hoses. I'll check those in...

well hello again, four years older and beset with another hiccup which confuses this 75 year old's brain, your collective knowledge would be greatly appreciated. The Lotus Excel hasn't been used much due to my illnesses but I am now getting back into it with renewed enthusiasm. I had the 14CUX...

well hello again, four years older and beset with another hiccup which confuses this 75 year old's brain, your collective knowledge would be greatly appreciated. The Lotus Excel hasn't been used much due to my illnesses but I am now getting back into it with renewed enthusiasm. I had the 14CUX...

well hello again, four years older and beset with another hiccup which confuses this 75 year old's brain, your collective knowledge would be greatly appreciated. The Lotus Excel hasn't been used much due to my illnesses but I am now getting back into it with renewed enthusiasm. I had the 14CUX...

thanks again. You're a star and this forum is fantastic.

yippeeee ! she runs ! New wiring diagram is far more detailed and showed up something on fuel pump relay. It seems that relay is powered and makes its switch thus powering 87 and 87A. Unfortunately the relay we used was powering 87A but switching off 87 simultaneously thereby down powering...

Thanks for the wiring diagram, it may provide the answer. I was working from a 1995 diagram and this one is post 1995. fingers crossed.

Once again, thanks for your thoughts. I have not rechecked the earth on the new fuel pump but will do so on Monday. I have to say that the pump starts its initial 5 second run when the ignition is switched on so I believe the fault to be somewhere in the injector circuit as If the injectors...

I assume that if it were a concealed isolator then the starter motor wouldn't function so I've ruled that out. I wondered about the absence of the inertia switch as there was one originally on the Lotus ( recipient).+ I've installed a 6.8 ohm resistor in the coil + lead and changed the tune...

The ECU is indeed switching the fuel pump relay but nothing beyond . The engine relay is switching as it should and the engine will turn over and fire on the key

....and on it goes ! Position to date is this. The ECU was sent to ECU Technologies for testing and came back A O K , however, the engine won't run unless I run a direct feed to the fuel pump and excite the injectors alternately bypassing the 14CUX. ECU Tech immediately responded that it was...

excellent, thanks for solving that one. It's obviously something I overlooked in an earlier reply...it's an age thing I suppose. Hopefully my next post will be to confirm that the engine runs.

Once again thank you all for your input. I have managed to get a resistor from Rimmers under another part number. I am , however, unable to find a supplier for the 470 ohm tune resistor. A little closer every day !