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   PeachParts Mercedes ShopForum > Technical Information and Support > Tech Help

Reply
 
LinkBack Thread Tools Display Modes
  #1  
Old 09-25-2002, 03:37 AM
Registered User
 
Join Date: Aug 2002
Location: So Cal, Beach
Posts: 250
Please help with Check Engine Light

I have a 1990 300ce, for the last 2 years the code comes up 17.
O2 related, ground mod in place, new O2 installed, will check the new O2 this week.

My "Check Engine" light comes on only after I "Kick it in the butt", hit 7000 rpm in 1st, slam into 2nd, go to third, and slow......cruse to wherever, stop, restart, "Bam Red Light".........code 17.

We have cleared the computer, and after a few months of "No Light" I pounded the throttle again........Pa Pow code 17!

Never a driveabialty problem......

????

Thank's,

Tim
__________________
Tim
300CE
280SE 4.5
Sandals (size 11)
Reply With Quote
  #2  
Old 09-25-2002, 09:03 AM
Moderator
 
Join Date: Mar 1999
Location: Tucker, Ga USA
Posts: 12,153
Have had that problem on several 1990 & 91 cars. The O2 heater must work so that the O2 sensor gets hot enough to go into "closed loop". The heater must receive battery voltage from the MAS relay. Many times the O2 sensor heater only gets 6-7 volts & LAMDA never works properly.
__________________
MERCEDES Benz Master Guild Technician (6 TIMES)
ASE Master Technician
Mercedes Benz Star Technician (2 times)
44 years foreign automotive repair
27 Years M.B. Shop foreman (dealer)
MB technical information Specialist (15 years)
190E 2.3 16V ITS SCCA race car (sold)
1986 190E 2.3 16V 2.5 (sold)
Retired Moderator
Reply With Quote
  #3  
Old 09-25-2002, 06:04 PM
Registered User
 
Join Date: Aug 2002
Location: So Cal, Beach
Posts: 250
M.B.DOC

Thank's for the info, way over my head, but my Tech said ah yes! I am going to take it in tomorrow and let them check it out.

If we get a low voltage reading would you sugest replacing the MAS?

Thanks again,
__________________
Tim
300CE
280SE 4.5
Sandals (size 11)
Reply With Quote
Reply

Bookmarks

Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is On
Trackbacks are On
Pingbacks are On
Refbacks are On




All times are GMT -4. The time now is 03:43 PM.


Powered by vBulletin® Version 3.8.7
Copyright ©2000 - 2017, vBulletin Solutions, Inc.
Search Engine Optimization by vBSEO 3.6.0
Copyright 2011 Pelican Parts - Posts may be archived for display on the Peach Parts or Pelican Parts Website -    DMCA Registered Agent Contact Page