wedge 350i idling
Discussion
Hi All
I know this subject has probably been done to death, but forgive me, just joined and thought better to start new. Got a 1986 350i, doesn't want to idle below 1100 rpm and shunts at low revs. Have fitted new plugs, new leads,checked for air leaks and checked timing, none have made any difference. What may be a clue is that when idling, if I lift clutch just enough to engage,then put clutch in again, the revs drop to 600rpm. Can any of you knowledgeable folks point me the right way?
I know this subject has probably been done to death, but forgive me, just joined and thought better to start new. Got a 1986 350i, doesn't want to idle below 1100 rpm and shunts at low revs. Have fitted new plugs, new leads,checked for air leaks and checked timing, none have made any difference. What may be a clue is that when idling, if I lift clutch just enough to engage,then put clutch in again, the revs drop to 600rpm. Can any of you knowledgeable folks point me the right way?
Hi Guys
Thanks for all the responses and advice, certainly plenty to think about there. Just to answer one or two of the qestions, the car idles at a steady 1100 from cold. Once it has warmed up, the idling is as described consistently.From what a couple of you are saying, idle speed of 1100 isn't uncommon. I just worry a bit about idle at that level for any length of time as the temperature needle soon rises. As I said, I can drop it by just engaging and then just dipping the clutch again-I just can't help thinkong I shouldn't have to do that.I will check the basic things mentioned and update-Thanks again for all the responses.
Steve
Thanks for all the responses and advice, certainly plenty to think about there. Just to answer one or two of the qestions, the car idles at a steady 1100 from cold. Once it has warmed up, the idling is as described consistently.From what a couple of you are saying, idle speed of 1100 isn't uncommon. I just worry a bit about idle at that level for any length of time as the temperature needle soon rises. As I said, I can drop it by just engaging and then just dipping the clutch again-I just can't help thinkong I shouldn't have to do that.I will check the basic things mentioned and update-Thanks again for all the responses.
Steve
Hi All
Just a quick update. I checked all hoses & connections, removed plenum cover, cleaned out and replaced, checked timing, new plugs and leads have been fitted, checked earth leads and electrical connections. After all that, there was an improvement, but still not right. Finaly, I adjusted the idle on the AFM and that seems to mostly have done the trick. Idle is not perfect, but doesn't fluctuate anything like as much and is much smother to drive at low revs. I plan on changing the camshaft over winter, but in the meantime, happy days- thanks for all the advice.
Steve
Just a quick update. I checked all hoses & connections, removed plenum cover, cleaned out and replaced, checked timing, new plugs and leads have been fitted, checked earth leads and electrical connections. After all that, there was an improvement, but still not right. Finaly, I adjusted the idle on the AFM and that seems to mostly have done the trick. Idle is not perfect, but doesn't fluctuate anything like as much and is much smother to drive at low revs. I plan on changing the camshaft over winter, but in the meantime, happy days- thanks for all the advice.
Steve
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