GEMS Engine Management Manual
 

Please find attached the GEMS engine management manual, includes codes and how they are calculated, etc. For 96-99 D1 and other vehicles. aka ecu ecm engine computer cpu

Also background material on earlier Lucas versions

If you are looking for D2 versions, see https://landroverforums.com/forum/di...manuals-48009/

You sir..........are a gentleman and a scholar..........

Much appreciated.....

Added similar detail for D2 in a separate post - Bosch M5.2.1 "Motronic" https://landroverforums.com/forum/di...manuals-48009/

Sava,

Thanks for the GEMS! I read just about the whole thing this afternoon then went out and cleaned my IACV.

Wish I had found this info a long time ago!

This sounds like something I need to download- and something I need to do.

Have anything like this for 14CUX or 13CU*? Thanks Sav

Pfftt... just put a carb on it and be done. :D

haha dont have one yet BUT with that said I do have a 95 d1 donor that is going to become something else in the hopefully soon future.

Just read thru the fuel injection systems manual. Covers 13cu 14cu 14cux and gems. Pretty sweet.

I've read though that manual several years ago, the GEMS system is pretty sweet, defaults for almost everything, so if a sensor fails you can still finish your safari.
Once the mall crawler (the DII) came out defaults went away.

see LAND ROVER

and Fuel injection

and Rover 14CUX Hot Wire Mass Flow EFI: Service and Troubleshooting

and cmb : 14CUX Information

and the second site has a link to a copy of the 87 & up Rover 14CUX manual