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 > Tech Help

Reply
 
LinkBack Thread Tools Display Modes
  #1  
Old 11-18-2008, 02:00 PM
Registered User
 
Join Date: Nov 2008
Posts: 1
1992 400se ASR/RPM problem

I have a 1992 400se. Last winter,cold starts would givve me a rush to 3000rpm's then back to 400rpm's then stall. This was the case until heat was achieved. Then it would start and run fine. Now when I start, it runs up to 4000rpm's and back to 400 rpm's and stalls. Sometimes upon restart, the ASR light will come on and it will idle fine but only 2/3 throttle. If you run the car like this, and do an ignition off/on, the ASR light goes out and the car will accelerate to 60mph by itself. Trickey getting it out of the garage when it does this. I try to get it in gear on the dropside of the rpm's but it wants to go by itself..good 10ft burn out marks on the floor!!!..what could be causing this?

Last edited by willyeno; 11-18-2008 at 03:14 PM. Reason: spelling
Reply With Quote
  #2  
Old 11-18-2008, 09:50 PM
Registered User
 
Join Date: Jul 2004
Location: NC
Posts: 1,140
I dont know, maybe vacuum, but the ASR light will come on in these cars in almost any fault situation. ASR itself is almost never the cause, the light is just a symptom.
Reply With Quote
  #3  
Old 11-19-2008, 08:08 AM
Moderator
 
Join Date: Mar 1999
Location: Tucker, Ga USA
Posts: 12,153
You need to have codes read from the electronic accelerator computer.
__________________
MERCEDES Benz Master Guild Technician (6 TIMES)
ASE Master Technician
Mercedes Benz Star Technician (2 times)
44 years foreign automotive repair
27 Years M.B. Shop foreman (dealer)
MB technical information Specialist (15 years)
190E 2.3 16V ITS SCCA race car (sold)
1986 190E 2.3 16V 2.5 (sold)
Retired Moderator
Reply With Quote
  #4  
Old 11-19-2008, 10:10 AM
remotemark's Avatar
Geplatzt
 
Join Date: Aug 2007
Location: Philadelphia
Posts: 1,018
Quote:
Originally Posted by M.B.DOC View Post
You need to have codes read from the electronic accelerator computer.
I was driving home from Philly to Baltimore yesterday in my E500 and along the way, I braked to slow for a red light, which changed to green before I came to a stop. I took my foot off the brake and hit the gas and nothing happened. I pushed the gas further and looked at the IC and the ASR light was on. Then, suddenly, the car downshifted from 3rd to 1st, the revs shot up, and the car rocketed away. It continued to run with the first half of the accel. pedal range doing nothing and the tranny shifting like a drunk. I didn't want to stop because I had my four year old and four month old sleeping in the back (amazing they didn't wake up from the lurching, especially on the B-more Beltway at rush hour). But when I stopped and turned off and back on, the light was gone and car ran fine. Same thing this morning.

Question is, do the codes have to be read during the problem or can it still be dx'ed after the fact?
__________________
I never go far without a little Big Star

1994 E500 199/Gray 82k
84 300D (Salty) Orient Red/Palomino 141k
88 300CE (Ersatzhammer) 904/Java 163k -- Turbo Technics twin turbo kit, AMG Gen I body kit, Sportline steering box and steering wheel, Sportline/Eibach /Bilstein Sport/500E suspension, Quaife LSD in 210 mm diff case, Silver Arrow brakes.
88 300CE Brabus 3.6 199 on Black 44k
Reply With Quote
  #5  
Old 11-19-2008, 11:25 AM
JimF's Avatar
'94 S500: only 793 sold!
 
Join Date: Mar 2001
Location: San Diego, CA
Posts: 1,929
Both "willy" and "mark" have the symptoms of a (going) bad ETA.

First, get the codes read as MBDoc suggested; check Menu#24 on my MB page for the modules that you should "read".

Then let us know. . . .
__________________
Regards . . . . JimF
-------------------
'94 S500 Cpe

Visit my Mercedes Web Page
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 05:57 PM.


Powered by vBulletin® Version 3.8.7
Copyright ©2000 - 2019, 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