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 > ML, GL, G-Wagen, R-Class, Unimog, Sprinter

 
 
LinkBack Thread Tools Display Modes
Prev Previous Post   Next Post Next
  #1  
Old 05-06-2007, 10:05 PM
Registered User
 
Join Date: May 2007
Posts: 9
99 ML430 with some issues.

I hate to rehash what's been said on another forum, but I'm not getting much input over there.

This started out with a P0170/P0173 CEL. I changed the MAF, but no luck. Recently, the truck has been sporadically running bad (loss of power, shuddering). Code check revealed the same two codes, accompanied by P0300, P0305, P0306, P0307 and P0308. I found it strange that all these codes were on one side of the engine; however, I replaced the plugs and wires.

I had a tech look at the truck when I had all the codes popping and he recommended plugs, wires and a throttle actuator. He said my MAF appears to be fine.

Since then, I have the P0170 and P0173 codes. I purchased an Actron CP9180 Autoscanner and checked the live data. This is what I got:

These values were taken after the codes had been cleared.

Here's a printout of my values at idle, upon startup:

MIL STATUS OFF
ABSLT TPS % 2.7
ENG SPEED RPM 651
CALC LOAD % 20.3
MAF FLOW g/Sec 5.55
MAP KPA 29
COOLANT F 208
IAT F 165
IGN ADVANCE -13.6
SECOND AIR ATMOS
ST FTRM1 % -1.0
LT FTRM1 % 16.4
ST FTRM2 % -2.2
LT FTRM2 % 17.1
VEH SPEED MPH 0
FUEL SYS 1 CLSD
FUEL SYS 2 CLSD
O2S11 V 0.785
ST FTRM11 % -2.2
O2S12 V 0.780
O2S21 V 0.100
ST FTRM21 % -2.2
O2S22 V 0.065

This is a record of the values after approximately one minute at idle:

MIL STATUS OFF
ABSLT TPS % 2.3
ENG SPEED RPM 659
CALC LOAD % 20.0
MAF FLOW g/Sec 5.41
MAP KPA 29
COOLANT F 208
IAT F 167
IGN ADVANCE -13.6
SECOND AIR ATMOS
ST FTRM1 % 0.7
LT FTRM1 % 16.4
ST FTRM2 % -4.6
LT FTRM2 % 17.1
VEH SPEED MPH 0
FUEL SYS 1 CLSD
FUEL SYS 2 CLSD
O2S11 V 0.155
ST FTRM11 % 0.7
O2S12 V 0.755
O2S21 V 0.210
ST FTRM21 % -1.0
O2S22 V 0.070

I took the truck for a drive (approximately 1/2 hour) and she threw the CEL again, upon startup. Here is a read out of the freeze frame event:

Frame 1 Mod $01
TROUB CODE P0173
ENG SPEED RPM 650
CALC LOAD % 26.6
MAP KPA 36
COOLANT F 195
ST FTRM1 % -11.8
LT FTRM1 % 16.4
ST FTRM2 % -13.3
LT FTRM2 % 17.1
VEH SPEED MPH 0
FUEL SYS 1 CLSD
FUEL SYS 2 CLS

Can anyone point me in the right direction?

BTW: After resetting the codes, the truck drives fine, sometimes for a day or so, before the P0173/P0170 return. If it was the MAF, wouldn't the problem raise its ugly head almost immediately? Could this symptom be indicative of a fuel pump/regulator/filter problem?

Last edited by piperca; 05-06-2007 at 11:16 PM.
Reply With Quote
 

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 01:18 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