Pelican Parts
Parts Catalog Accessories Catalog How To Articles Tech Forums
Call Pelican Parts at 888-280-7799
Shopping Cart Cart | Project List | Order Status | Help



Go Back   Pelican Parts Forums > BMW Forums > BMW Technical Forums > 101 Projects Discussion Forum: BMW 3-Series


Reply
 
LinkBack Thread Tools Rate Thread
Author
Thread Post New Thread    Reply
Registered
 
axvel's Avatar
 
Join Date: May 2004
Location: Los Angeles CA
Posts: 599
Send a message via ICQ to axvel
Exclamation Check Engine Light Followed by ASC Light At Idle Help!

1994 325is 5 spd
Check Engine Light goes on Followed by ASC Light After 10 sec of Idle unless i keep reving till about 1500-2000RPM Help! I live in LA and Traffic Drives me nuts!! Please if you have any info please let me know.


Last edited by axvel; 10-09-2005 at 03:32 PM..
Old 10-09-2005, 10:28 AM
  Pelican Parts Catalog | Tech Articles | Promos & Specials    Reply With Quote #1 (permalink)
Registered
 
supertack's Avatar
 
Join Date: Jan 2003
Location: Mundelien, Illinois
Posts: 821
Garage
ASC light sounds like a wheel sensor has gone bad. I had that problem; however, I didn't get a check engine light in conjuction with it. If they don't have to drill out the sensor bolt, it shouldn't cost you too much.
__________________
Every Boy Becomes A Man. A Fortunate Few Reverse The Process.
97 328is
Black on Black 5 speed

Sport Package, Short Arm Intake with ABS Molded Heat Shield, Custom Mounted Front Strut Bar, Elevated Clutch Stop, Polished Aluminum Roundel Shifter, AC Schnitzer Aluminum Pedal Set, Chrome Instrument Cluster Rings & Carbon Fiber Bezel, Crystal Clear Corners, OEM Clear Tail & Side Lights, Scalloped Headlight Trim, Custom 'is' Grill Badge, Alpine C43 Stereo Upgrade, Front Bumper Filler
Old 10-10-2005, 07:46 AM
  Pelican Parts Catalog | Tech Articles | Promos & Specials    Reply With Quote #2 (permalink)
Registered
 
axvel's Avatar
 
Join Date: May 2004
Location: Los Angeles CA
Posts: 599
Send a message via ICQ to axvel
But ASC is located in the intake, and it only comes on after idle for about 10 sec, kind of like you stoped at the stop light and waiting, and if i keep the engine RPMs at 1500-2000 then it never comes on, so i dont think that the sensor is in the wheel, Basically the ASC sensor stops the air feed to the engine if the differential notices a slip or one wheel turning faster then the other. Maybe its Vacuum Leak, does anyone know?
__________________
'77 Porsche 911 S
Red/Cork Tan * Turbo Tail * 930 Steering Wheel* 17" Fuchs (r) * 3.2 * 915 * LSD * 930 Brakes * Elephant Racing Suspension * Turbo Tie Rods * Bilsteins Sports * Steve Wong Pre-Muff * B&B EXhaust * SW Chip on 4K DME
PCA
Old 10-10-2005, 08:32 AM
  Pelican Parts Catalog | Tech Articles | Promos & Specials    Reply With Quote #3 (permalink)
Moderator
 
Jeron's Avatar
 
Join Date: Feb 2004
Location: DFW (Hurst), Texas
Posts: 4,730
Garage
The ASC system reads the ABS wheel speed sensors and actuates a butterfly in the intake so you are both right.

Does your problem only happen on cold starts or on warm starts too?

Your first step should be to pull the engine codes. Yours is OBD-I and I think the pedal process to get the codes is in the Tech Articles on Pelican.

p.s. I could help myself and looked it up:
http://www.pelicanparts.com/bmw/techarticles/Mult-Code_Reading/Mult-Code_Reading.htm
__________________
HPDE Instructor (BMW / PCA / Apex)
Here: 1997 M3/4 Byzanz/Magma ~ 2006 Yamaha R6 ~ 1997 R1100RT ~ 1991 Ford F-150 5.8l ~ 2015 Kia Optima
Gone: 2001 330i Silver/Grey ~ 98 Camry V6 ~ 97 Camry I4 ~ 97 Mazda 626 I4 ~ 93 Sentra SE-R ~ 88 Toyota Truck I4

Last edited by Jeron; 10-10-2005 at 10:22 AM..
Old 10-10-2005, 10:18 AM
  Pelican Parts Catalog | Tech Articles | Promos & Specials    Reply With Quote #4 (permalink)
Registered
 
axvel's Avatar
 
Join Date: May 2004
Location: Los Angeles CA
Posts: 599
Send a message via ICQ to axvel
Well the problem happens all the time when i'm in idle for more than 10 sec, unless i keep reving the engine meaning holding down the gas pedal so it stays beetween 1500-2000 rpm, and if i dont do that, then it will display check engine light followed by ASC light, and then i have to turn off and then turn the car back on so it will dissapear.
If i still need to reset or check my codes does anyone have a reset tool i can borrow, i'll pay. Thanks
Old 10-18-2005, 09:14 AM
  Pelican Parts Catalog | Tech Articles | Promos & Specials    Reply With Quote #5 (permalink)
Moderator
 
Jeron's Avatar
 
Join Date: Feb 2004
Location: DFW (Hurst), Texas
Posts: 4,730
Garage
Your local parts store should be able to read the codes for free. Call them.

Your local BMW CCA will also have a code reader. If you take it to a shop, find the website of the CCA and find out who their club sponsor shops are.
__________________
HPDE Instructor (BMW / PCA / Apex)
Here: 1997 M3/4 Byzanz/Magma ~ 2006 Yamaha R6 ~ 1997 R1100RT ~ 1991 Ford F-150 5.8l ~ 2015 Kia Optima
Gone: 2001 330i Silver/Grey ~ 98 Camry V6 ~ 97 Camry I4 ~ 97 Mazda 626 I4 ~ 93 Sentra SE-R ~ 88 Toyota Truck I4
Old 10-18-2005, 10:05 AM
  Pelican Parts Catalog | Tech Articles | Promos & Specials    Reply With Quote #6 (permalink)
 
Registered
 
axvel's Avatar
 
Join Date: May 2004
Location: Los Angeles CA
Posts: 599
Send a message via ICQ to axvel
Thanks Jeron, I'll try

__________________
'77 Porsche 911 S
Red/Cork Tan * Turbo Tail * 930 Steering Wheel* 17" Fuchs (r) * 3.2 * 915 * LSD * 930 Brakes * Elephant Racing Suspension * Turbo Tie Rods * Bilsteins Sports * Steve Wong Pre-Muff * B&B EXhaust * SW Chip on 4K DME
PCA
Old 10-18-2005, 11:23 AM
  Pelican Parts Catalog | Tech Articles | Promos & Specials    Reply With Quote #7 (permalink)
Reply


 


All times are GMT -8. The time now is 02:31 AM.


 
Powered by vBulletin® Version 3.8.7
Copyright ©2000 - 2025, vBulletin Solutions, Inc.
Search Engine Optimization by vBSEO 3.6.0
Copyright 2025 Pelican Parts, LLC - Posts may be archived for display on the Pelican Parts Website -    DMCA Registered Agent Contact Page
 

DTO Garage Plus vBulletin Plugins by Drive Thru Online, Inc.