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 01-09-2001, 09:57 AM
Registered User
 
Join Date: Nov 2000
Location: Jacksonville, FL USA
Posts: 113
Well I finally ordered a new OVP and replaced it. But now am having problems again. Is it possible that my driving for about a month with the OVP has caused problems somewhere? What happens is, when the new OVP was placed in the car the engine almost flooded itself trying to start. Well I took the OVP out and the car started right up, I let it warm up a bit and put the new OVP back in the car, the car started running real rough and just smoothed out after about 5 seconds of rough running. I took the OVP out and the engine RPM and sound did not change. When I put the OVP back in it started running rough so I took it back out, when I did the engine smoothed out. I have heard about something called Fixed operating mode or something along those lines. Could a bad O2 sensor put the car in FOM and cause the running problems stated above? Or might it be something else. I just left the OVP in the car (which made my Antilock brakes work again) and now every time I start it (when warmed up) it runs rough for about 5 seconds or less and smooths out again also now if I leave the car idling for about 10 mins or more the O2 light illuminates and goes away after a driving about 1/2 mile. Thanks for your help and sorry about the long post.
__________________
Adam,
2003 Volkswagen Golf GL 24,000 miles. 1.9L I-4 TDI 5spd.

1986 300E. 115,000+ miles. 3.0L I-6 1st daily ride, around town only. (Gone)
Reply With Quote
  #2  
Old 01-09-2001, 04:29 PM
Moderator
 
Join Date: Mar 2000
Location: Gainesville FL
Posts: 6,844
When the OVP relay is bad or missing the KE control unit is unpowered. With a warm car the feedback control system (Lambda) should be set to zero current correction. This normally means the car runs about the same warm with or without electrical control.

If your car runs good without electrical control it probably is running rich to cover up a problem. When the OVP is installed the system tries to adjust itself to its appropriate lean mixture. Your car either doesn't like it there or there is a problem with the control system. It will have to be monitored for the answer.
__________________
Steve Brotherton
Continental Imports
Gainesville FL
Bosch Master, ASE Master, L1
33 years MB technician
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 04:35 AM.


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