1500 idle sounds extremely high and is most likely incorrect. My M5 idles at 850-900, although the motor in my car is different than yours.
'90 525i (M20)
Can someone please tell me at about what RPM should my car idle. It idles now at about 950...someone told me it should be around 1.5. I ask because I'm spending the weekend replacing my MAF...so your advice is appreciated.
Thanks all
1500 idle sounds extremely high and is most likely incorrect. My M5 idles at 850-900, although the motor in my car is different than yours.
Last edited by VentoGT; 07-07-2006 at 03:08 PM.
Yea 1.5k sounds wrong...
Lowered with blue h&r(?) springs, Bilsteins, tint, 19# design 3 injectors, Dual Magnaflow
southwest WA
My 89 M20 idles between 750 and 800
BMWCCA Member #330940
Bayou Chapter, Louisiana
Around 900 for me. When I do the display thing (where all the display lights go ), the car idles around 1100 upon start-up, but would go back to around 900 when the car was put into gear or shut off and turned on again.
Last edited by Jzza4; 07-07-2006 at 04:47 PM.
1500 is way to high. should be about 900. its controlled by the dme anyway, so its only a spec to see if you have some ther problem.
I have an 89 that idles around 750
m20b25
Last edited by Bill R.; 09-14-2007 at 11:22 PM.
my 530 idles at about 480 rpms when it warms up, but it is extremely responsive for off the line acceleration (massive tire squeal in .1s on an auto anyone?) so i dont plan on screwing with the idle settings.
i suspect the DME drops the idle speed if it determines the engine has enough power, or raises it if the engine is getting weak.
Alusil, Dinan DME | ITG Air Filter | Eibach/Bilstein HD | 26/20 Swaybars | Iridium plugs | Depo/ProLumen HID | Optima batt. | no AC | Stoptech brake lines, Frozen rotors, brass bushings, Superblue
Mine idles right around 700, give or take a few...