Stepper Motors

[Claudia23]

Hi everyone,
I'm running a 3.9 efi on my Land Rover Discovery, when I start the engine it's hunting for rpm, ie it goes up to 1500 then drops to almost a standstill then goes up to 800 then drops to 300 then settles at 750, I've asked a few people and they seem to think it might be the stepper motor does anyone know the part number, I have part number 73312a but the plug is in the wrong orientation.
Any help/suggestions would be greatly appreciated

[Sralex]

Hello Bro
Firstly i think you cleaned throttle body and checked for any vacuum leaks. And also you should check the coolant temperature sensor along with MAF.
And for the part number its ERR5199(Which may explain the wrong orientation.
Thank you in advance and please thank and reputation if i helped

[Meat-Head]

Try to stall it with a rag over air intakes see if got airlesk


spray that blue/yellow can UB40 around throttle shaft

clear adapations with scan tool