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

LinkBack Thread Tools Display Modes
Old 09-25-2003, 09:43 AM
Registered User
Join Date: Nov 2002
Location: Fort Worth, Texas
Posts: 81
Prevent. Maint.

I wanted to know you guys opinion on replacing such items as electric fuel pumps, fuel pump relays, fuel injectors etc., as part of a preventative maintenance program.
What things would you add to the list and what intervals would you recommend changing them. The reason I am asking because when these items fail then we are at a loss for time which is very valuable. It would seem easier to just replace items on a timetable - like oil and filters. (less often of course) Just wanted your opinions.

Robert Davis
Robert Davis
Reply With Quote
Old 09-25-2003, 10:31 AM
Registered User
Join Date: Nov 2000
Location: Vernon, CT
Posts: 1,846
I don't think there is even a basis for replacing relays. You are right about when these things go, your stuck, but that is the nature of electronics. Fuel pumps will give you a heads up, they will become noisy. Though a good way to prevent burning up fuel pumps (if they are in the fuel tank) is to not let your gas level get below 1/4. The gas helps cool the pump, hence less fuel, less cooling. As far as relays, you could buy a brand new one and it could fail inside of a week. Solid state electronics don't have parts that wear, so there is no way of knowing when they are going to fail. Your line of thinking is good, it's just impractical and expensive to start replacing elctronics just for the sake of preventitive maintance.
1999 MB SL500 (101,000 mi)
1983 Porsche 911SC (149,000 mi)
2004 Volvo V70 2.5T (205,000 mi)
2014 Tesla Model S 85 (75,000 mi)
PCA member
MBCA member
Reply With Quote
Old 09-25-2003, 12:59 PM
csnow's Avatar
Registered User
Join Date: May 2002
Location: Mass
Posts: 1,127
I think it is impossible to predict when those things are going to fail. Fuel pumps generally give some warning, or become intermittent for a time.
FTR, the fuel pump on my 300E lasted 16 years/200k miles.

I suppose it can't hurt to carry a spare relay...
1986 300E 5-Speed 240k mi.
Reply With Quote
Old 09-25-2003, 03:52 PM
Registered User
Join Date: Apr 2003
Posts: 320
Replace for known problem area's like the OVP and fuel pump relays for W124.
94 E320 58000 Miles
Reply With Quote


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 02:13 AM.

Powered by vBulletin® Version 3.8.7
Copyright ©2000 - 2018, vBulletin Solutions, Inc.
Search Engine Optimization by vBSEO 3.6.0
Copyright 2018 Pelican Parts LLC - Posts may be archived for display on the Peach Parts or Pelican Parts Website -    DMCA Registered Agent Contact Page