Mercedes-Benz Forum - Reply to Topic
Topic: 2 FPR's on '85 M116? Reply to Thread
Title:
Message:
Trackback:
Send Trackbacks to (Separate multiple URLs with spaces) :
Post Icons
You may choose an icon for your message from the following list:
 

Register Now



In order to be able to post messages on the Mercedes-Benz Forum forums, you must first register.
Please enter your desired user name, your email address and other required details in the form below.

User Name:
Password
Please enter a password for your user account. Note that passwords are case-sensitive.

Password:


Confirm Password:
Email Address
Please enter a valid email address for yourself.

Email Address:
OR

Log-in










  Additional Options
Miscellaneous Options

  Topic Review (Newest First)
06-15-2019 09:18 AM
unavita Looking for started for euro models. Not finding any schematics!
06-15-2019 05:11 AM
unavita
Euro and ROW

My '82 500SE and '83 500SL both do not have an FPR/ dampener either inline with the WUR or otherwise. There is not a frequency valve on them either.

The '80 M117 has one FRP and a frequency valve but not an ICV (Idle control valve)- well not an electronic one. There is of course the recessed air valve where latter models find their ICV.

Looking at schematics at the above link shows that some models beginning in 1983 intended for the US had 2 FPR's. By 1985 all models had 2.

It is my understanding that the 560 model was exported to the US and Japan only. I'd be interested to know if A) the FPR is used to maintain a higher fuel pressure for increased MPG AND B) if Japan models are so equipped?

It should be noted that the frequency valve works in consort with the oxygen sensor so it would stand to reason that all cars with o2 emissions would have both and the FPR is an essential part of this system as well as EGR and others.
06-13-2019 07:24 PM
unavita
Quote:
Originally Posted by Fonzi View Post
FPR = fuel pressure regulator in this case, not fuel pump relay.


Sent from my iPhone using Tapatalk

Oh yep! Thanks.
06-13-2019 05:45 PM
Fonzi FPR = fuel pressure regulator in this case, not fuel pump relay.


Sent from my iPhone using Tapatalk
06-13-2019 05:01 PM
unavita
2 FPR's on '85 M116?

I've checked my disc for 107. I've looked all over BUT can't find what I'm looking for-

DOES THIS MAKE AND MY HAVE 2 FPR'S? I have the standard on the driver side of the FD that connects to the frequency valve. However, there is also one on the back side of the FD. This is the only car of the 6 CIS-k car's I have. Help is welcomed.

Found this:
https://www.startekinfo.com/StarTek/..._38/14-050.pdf

Sure enough- There are a couple examples of two "dampeners" here: P31 https://www.startekinfo.com/StarTek/..._38/14-050.pdf

Posting Rules  
You may post new threads
You may 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 Off

 

Title goes here

close
video goes here
description goes here. Read Full Story
For the best viewing experience please update your browser to Google Chrome