Stepper motor on a 1.9 td

[Nickmiscellaneous]

Can't find the stepper motor on a 1.9 td 97 saloon. I'm used to it being an idle speed control valve!
I've been told it's a 4 cable plug and it's somewhere near the fuel pump but the only plugs I can find are 2 cable ones I'm pulling my hair out, it's not even in the haynes manual I have!
Please someone put me out my misery!

[steve_earwig]

I didn't think diesels had idle control valves, isn't it all done with fuel volumes? [/only does lawnmowers]

[jonsowman]

No idle stepper on diesel cars, they don't have a throttle.

This is precisely the (main) reason for better diesel fuel economy - lack of throttling losses.

[Nickmiscellaneous]

Well I'm glad I'm not going mad then not being able to find one! In that case what would likely be the cause of my revs bouncing when I first start the car and sometimes when I pull up at lights etc? It also it's at 1000rpm at idle which as far as I'm aware is higher than it should be!
Thanks for the clarification guys!

[Doggy]

Most likely culprits are fuel filter, clogged in-tank strainer or a very minor fuel pipe leak, (they can let in air without leaking diesel).