Talk Morgan Forums Morgan Sports Cars Maintenance & Servicing Plus 8 hot start

Bruce

No I don’t have a reader, and not likely to find one round here! I may have to invest in one.

Mick, I'm sure you are aware that all the fault codes, which ever reader you use for the 14CUX, are all related to the fuel system, there are none for the ignition side of the engine. That said, if you have an engine problem and there are no credible fuel error codes, it suggests that the problem is electrical.
Mark at Mark@blitzracing.co.uk does a good deal on a bespoke cable, Rovergauge software, instructions and review articles, highly recommended.

You mention it died twice whilst slowing to enter roundabouts presumably not coming to a complete halt, did it restart? Are the other times when the car is slowing or has come to a stop or does it just cutout when you are driving? I know you first mentioned it would not restart when hot if you manually turned the engine off and you had to wait 5-10 minutes before it would restart. I also assume it runs OK when hot and accelerating or slowing without coming to a stop, no lumpy or hesitation behavior?

Mick, a non cost diagnosis- do you have a throttle position sensor on the side of the plenum, something like this?

https://www.ebay.co.uk/itm/12490420...r=&widget_ver=artemis&media=COPY

Try unplugging it and go for a run. You won't get the oomph out of the ecu, but everything will run at default settings. If the symptoms stop, this could be the part to replace. Mine went brittle and haywire after 20 yrs service; it buggers up other settings in the ecu, intermittently, when it begins to fail. Don't 'be tempted to replace with a chinese copy, pay the LR tax, it saves mis-diagnosis. I suspected my TPS, replaced with a copy, and had symptoms return. My mechanic son suggested unplugging the TPS, hey presto, dodgy copy and faulty part diagnosed. Lo cost to that point !!, but trouble free motoring now.
Good luck with finding the cause
Phil

Both times it cut out we had to sit for 5-10 mins before it would start again. Otherwise it runs fine, no lumpy running or hesitation, tickover is fine.

Not sure, I’ll have a look in the morning and report back.

I have managed to find a genuine LR fuel temp sensor though

It would appear to be an open loop issue which would lean towards the fuel rail temperature sensor and the water temperature sensor (not the radiator sensor). I always carry a water temperature sensor in the spares as they notoriously play up and give the ECU false readings causing symptoms such as rough idle and stalling.

Thanks Bruce

Still not fixed it

I’ve replaced the coil, fuel temp sensor, coolant temp sensor and stepper motor, all to no avail - it starts and runs fine from cold, but if I a witch it off when hot it won’t restart.

My son is tracking down a cheap laptop for me and will load up Rovergauge so I can be a bit more methodical in my problem tracing, but in the meantime any ideas?

It would appear the problem was the (new) ignition module, swapped back to the old one and normal service has resumed. Thanks all for the help, advice and links to the parts.