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
  #1  
Old 03-02-2003, 12:46 AM
Larry Delor's Avatar
What, Me Worry?
 
Join Date: Jun 1999
Location: Sarasota, Fl.
Posts: 3,077
E420 running like a 4 cyl. after testing air pump

Hello all,

I am at a loss, as to what happened today.
I went to my local mechanic to see about a car that he is working on, when I mentioned to him that my "check engine light" had come back on. (He had cleared the codes a week before)
One of the codes had to do with the airpump - I think it wasn't turning on, although I am not sure. His device (made by "Baum") has the capability to (apparantly) make the airpump engage for testing purposes. It does this 5 seconds at a time. After the 2nd or maybe 3rd time, the engine died with no explanation. At first it was something his diagnostic device did. He then tells me that it wasn't performing any kind of test, and he had no idea why the engine quit. After restarting the motor, it seemed to idle poorly at first, then you could tell it was trying to level itself out, then it idled ok, but not as smooth as before. (to me it seemed like the pass. side was idling rougher than the drivers side)
Not quite sure what to make of it, I thought that maybe I was getting toward the bottom of my gas tank, and decided to get a few gallons of gas. (Mobil 93 prem.) However, both on the way there, and on the way back, the car had no power...it was like it was only running on 4 cylinders (it even sounded like it). Shifting was also a bit abrupt - but that may be to the lack of power.
My mechanic at this point has no clue (nor do I)....I suspect that like me right now, he is going out and asking questions.

If anybody thinks they can point me in the right direction please let me know.

Thank you in advance,


(In case it doesnt show... its a '94 E420 with 89k miles)
__________________
"...rationality of thought imposes a limit on a person's concept of his relation to the cosmos." -Nash

04/71 280SE 195k
09 Jetta TDI

Last edited by Larry Delor; 03-02-2003 at 10:53 PM.
Reply With Quote
  #2  
Old 03-02-2003, 01:35 AM
Larry Delor's Avatar
What, Me Worry?
 
Join Date: Jun 1999
Location: Sarasota, Fl.
Posts: 3,077
It has dual distributors and related hardware. We checked for any loose wires too, but to no avail.
__________________
"...rationality of thought imposes a limit on a person's concept of his relation to the cosmos." -Nash

04/71 280SE 195k
09 Jetta TDI
Reply With Quote
  #3  
Old 03-02-2003, 08:22 PM
Larry Delor's Avatar
What, Me Worry?
 
Join Date: Jun 1999
Location: Sarasota, Fl.
Posts: 3,077
If this should turn out to be the wiring harness issue, (I thought that by that year and model they had corrected this issue), then I am curious to know what kind of readout my mechanic would get on his Baum diagnostic tool. Would these readings not make any sense/be totally erratic?

This has been a real bummer.
__________________
"...rationality of thought imposes a limit on a person's concept of his relation to the cosmos." -Nash

04/71 280SE 195k
09 Jetta TDI
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 12:44 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