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-Benz Forum > Mercedes-Benz Tech Information and Support > Tech Help

Reply
 
LinkBack Thread Tools Display Modes
  #1  
Old 10-19-2005, 12:27 AM
Registered User
 
Join Date: Jun 2005
Location: Hopkinsville, Ky
Posts: 107
Question OVP on a 91 300e?

I have had starting problems with my 91 300e. i replaced spark plugs(were bosh platinums) with correct spark plugs and adjusted eha, for the most part solved my problem. i looked at my ovp and it only has one fuse and there is no place for a second fuse? i thought there were supposed to be 2 fuses in it. is this a problem?

P.S. could a bad fuel pump/ filter cause slugish acceleration?

thanks in advance

Reply With Quote
  #2  
Old 10-19-2005, 04:59 PM
Senior Member
 
Join Date: Jul 2002
Location: visalia ca
Posts: 368
Quote:
Originally Posted by masonn300
I have had starting problems with my 91 300e. i replaced spark plugs(were bosh platinums) with correct spark plugs and adjusted eha, for the most part solved my problem. i looked at my ovp and it only has one fuse and there is no place for a second fuse? i thought there were supposed to be 2 fuses in it. is this a problem?

P.S. could a bad fuel pump/ filter cause slugish acceleration?

thanks in advance

one fuse. yes pump/filter can cause the problem.

george
Reply With Quote
  #3  
Old 10-19-2005, 05:06 PM
Registered User
 
Join Date: Jun 1999
Location: Albuquerque, NM USA
Posts: 1,947
That makes it an old one. Replacements have two.
__________________
Kent Christensen
Albuquerque
'07 GL320CDI, '10 CL550. '01 Porsche Boxster
Two BMW motorcycles
Reply With Quote
  #4  
Old 10-19-2005, 07:45 PM
Registered User
 
Join Date: Jun 2005
Location: Hopkinsville, Ky
Posts: 107
are new ones better?

should i go ahead and get a new one with two fuses? are they any better than the originals?

thanks
Reply With Quote
  #5  
Old 10-19-2005, 11:53 PM
Registered User
 
Join Date: Jul 2005
Location: Wilmington, NC
Posts: 39
Masonn,

What kind of problems are you having? When is the car sluggish? Mine takes a while to fire when I'm cranking, and is sluggish when accelerating from a stop. If the car has any momentum, it's fine (with acceleration). I've replaced: Plugs, Wires, Cap, Rotor, Fuel Injectors, Fuel filter, and next on my list is the OVP relay as I've heard that can cause similar symptoms as well. I've found one at about half the cost of the local dealer from an online shop. (not sure if the rules permit me to post the name of the website.)

Anyway, I know I'm not answering your questions, my reason for responding to your post is that there seem to be many others who describe similar symptoms, and each time, the response seems to be different. i.e.: replace the coil, try the brushes on the regulator, OVP comes up a lot. My OVP relay won't be here until Monday, so I'll know then if that fixes my symptoms. I'm curious if your car's symptoms are the same as mine, and if so, what fixes it. I haven't heard anyone say if one type of relay is better than another (new vs. old)...I'll keep you posted.
Reply With Quote
  #6  
Old 10-19-2005, 11:56 PM
Registered User
 
Join Date: Jul 2005
Location: Wilmington, NC
Posts: 39
Sorry, I forgot, Mine's an 87 300E with 195K miles
Reply With Quote
  #7  
Old 10-20-2005, 12:44 AM
Registered User
 
Join Date: Jun 2005
Location: Hopkinsville, Ky
Posts: 107
Quote:
Originally Posted by MacGyver
Masonn,

What kind of problems are you having? When is the car sluggish? .
i am having similar problems like you. i have replaced: spark plugs, rotor, and an ajusted eha. all seem to have solved my problem of starting some what but occationally, esspecially when it is warm outside i have a long cranking period and even then it will stumble and sometimes shut off. it was cold this morning and it started better than it ever had. i intend to replace the fuse first to see if it solves the problem. the old fuse looks like it has a small crack in it, unsure. i have noticed also that my slugshness could be one of two things, bad fuel filter and pump, or the transmission since the trans is from an 88 300e(long story ) i'll keep you posted on my progress.
Reply With Quote
  #8  
Old 10-20-2005, 12:45 AM
Registered User
 
Join Date: Jun 2005
Location: Hopkinsville, Ky
Posts: 107
forgot.

the car is slugish sometimes during take offs and below 40mph.
Reply With Quote
  #9  
Old 10-21-2005, 10:54 AM
Registered User
 
Join Date: Jul 2005
Location: Wilmington, NC
Posts: 39
There's a recent post reporting the same problem: http://www.peachparts.com/shopforum/showthread.php?t=134802
It just seems weird that there is not a difinitive answer to this problem that so many people are having, or that so many different things could cause the same symptoms...very frusterating!!! Let me know how the fuse replacement goes.
Reply With Quote
  #10  
Old 10-22-2005, 12:43 AM
Registered User
 
Join Date: Jun 2005
Location: Hopkinsville, Ky
Posts: 107
replaced fuse

i replaced the fuse today . turns out the old one was cracked my warm start ups are somewhat better. next i intend to replace the injectors, fuel pump/filter, and hoses. this should help solve my idle problem.

thanks for all of your alls advice.

Reply With Quote
Reply

Bookmarks


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 02:15 PM.


Powered by vBulletin® Version 3.8.7
Copyright ©2000 - 2025, vBulletin Solutions, Inc.
Search Engine Optimization by vBSEO 3.6.0
Copyright 2024 Pelican Parts, LLC - Posts may be archived for display on the Peach Parts or Pelican Parts Website -    DMCA Registered Agent Contact Page