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
  #16  
Old 08-07-2003, 10:27 PM
azhari
Guest
 
Posts: n/a
Lightbulb

Mike

The formula at the Landiss site is correct!

I just did a key-on test on my X11/3 to confirm the formula :

Battery voltage : 13.7V
Pin 3 voltage : 4V
Ratio : (4/13.7) x 100 = 29% (???)

If you use the formula :

[1 - (4/13.7)] x 100 = 70%

which is correct coz it's a federal car!

So the formula is correct!

Thanks for the heads-up, Mike.
Reply With Quote
  #17  
Old 08-08-2003, 08:44 AM
LarryBible
Guest
 
Posts: n/a
Mike Murrell,

You're definitely onto it. Whenever using electronic test equipment, relying on calculations adds a hefty margin for error or confusion. When you just flat don't have the correct instrument that is when you fall back on doing the math.

For some things it's usually your only practical choice, such as measuring very high current using a hefty .1 Ohm resistor and then doing the math. You use the .1 so that the math is simply a movement of decimal places.

Have a great day,
Reply With Quote
  #18  
Old 08-18-2003, 11:55 PM
300EVIL's Avatar
Moderator Incarnate
 
Join Date: Apr 2000
Location: Lake Geneva, WI.
Posts: 1,676
Thanks for the help!

Well, I finally found the time to troubleshoot my engine management problems. I checked the TPS, It was working correctly. I then realized what i did to the engine that made it run in "open loop" (I believe that is what it's called.) operation. I placed a resistor on one of the thermal sensors on my cyl head to compensate for the original hesitation problem 3 years ago. I have since removed the resistor and was then able to adjust my CO back to the 45-50% range. A little rich won't hurt, right? Anyway, I am very pleased with the results! My car uses less gas and doesn't make you gag from the exhaust fumes anymore. Surprisingly the cats and the O2 sensor seem to be intact as well. That amazes me after heavily driving the car for 3 years in that condition, 18%,,, WOW, Thatís rich!
I would like to thank everyone for their input, I couldn't have fixed it without your help!
Thanks Again!
Adam
__________________
Current Stable:
01 ML55 AMG
92 500E (a few mods)
87 300E (lots of mods)
00 Chevy 3500HD Diesel Box Truck
68 18' Donzi Marine
06 GT i-Drive7 1.0 Mountain Bike (with GPS!)

PREVIOUSLY OWNED:83 300SD, 87 420SEL, 88 420SEL, 90 420SEL, 86 560SEL, 86 190E 2.3-16V AMG, 94 E320

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 07:52 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