Discussion
My 1990 350i idles at around 1000 rpm, (when I take it lower it is a little unstable). During the day things are pretty good, the fan cuts in my idle goes down to 900 rpm and I remain a happy wedge driver.
However at night with lights up I have a problem, idle goes down to 500 rpm when the fan cuts in and dies.
For some reason this happens more frequently when I am waiting to turn right and have the steering hard over !
Why doesn't the ECU compensate for the extra load on the altenator ? Does anyone have a similar problem ?
I can over come it with a 1200 rpm idle, but what a waste !!
Please any advise, thanks Keith
However at night with lights up I have a problem, idle goes down to 500 rpm when the fan cuts in and dies.
For some reason this happens more frequently when I am waiting to turn right and have the steering hard over !
Why doesn't the ECU compensate for the extra load on the altenator ? Does anyone have a similar problem ?
I can over come it with a 1200 rpm idle, but what a waste !!
Please any advise, thanks Keith
Hi Guys, Thanks for the imput. A few other condiderations for the pot, I can detect no air leaks, Co is 5.5% and I am running 4 degrees advance (any more and I pink badly). I have cleaned as many electrical contacts as possibly and have changed the plugs and leads. 1200 RPM at idle is such a waste, does anyone know what a Rover Vitesse idle should be ?
My wedge seems to run pretty well other than this glitch. I guess a rolling road tune would help ?
Keith
My wedge seems to run pretty well other than this glitch. I guess a rolling road tune would help ?
Keith
Gentlemen, A further update. I have taken 2 Sheds advice and lowered the Co to 3.5 and rechecked the possible air leak situation (still can't find any !)
I now have a fairly steadly idle of 1050 which drops to 950 when the fan cuts in. Do you think advancing the ignition would be benefitial (currently 4 degrees)? Also does anyone run the full 8 degrees with unleaded ?
Thanks for the help.
Keith
I now have a fairly steadly idle of 1050 which drops to 950 when the fan cuts in. Do you think advancing the ignition would be benefitial (currently 4 degrees)? Also does anyone run the full 8 degrees with unleaded ?
Thanks for the help.
Keith
Bluewedge, What year is your car ? I notice that Wedg1e
has similar difficulties but has overcome them with super dexterous spanner manoeuvers. I guess there must have been a design change for '90 spec 350i as my power steering bracket is significantly away from the distributor. I know it is a pain in the rear but can you jack the car end up and access the end of the bolt from below ?
Keith
has similar difficulties but has overcome them with super dexterous spanner manoeuvers. I guess there must have been a design change for '90 spec 350i as my power steering bracket is significantly away from the distributor. I know it is a pain in the rear but can you jack the car end up and access the end of the bolt from below ?
Keith
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