22-07-2012, 09:12 AM
I'd put money on it being an engine control issue... The ecu is always fighting to keep the engine rpm steady at idle, any external forces in the feedback loop will cause the engine rpm to adjust, the ecu should then compensate and adjust the icv, injection trim and spark accordingly, it simply sounds like an icv issue, until you've replaced the icv, I'd highly doubt its to do with the power steering, I've owned and worked on quite a few 306s now, and have never come across a pas pump causing anything similar, or at least, nothing that could possibly affect the idle so that it couldn't hold it remotely steady.
Hope this helps.
Hope this helps.
