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 12-31-2002, 04:00 PM
simonlang
Guest
 
Posts: n/a
engine dying 300TE

Can anyone help with the weirdest problem. My recently purchased 300TE is a stunner, but.... it has a problem where the engine simply dies. There are no prevailing conditions, and it does it under load, on the over-run, uphill, downhill, slow, fast, hot, cold, if you get the picture? It simply dies, and then fires up again and runs normal. It sometimes will stall completely, if you are going slowly, and that's scarey, (no P/S, brakes etc.) then you turn the key and it acts like there is no problem.
My local garage found water in my tank, and drained and disposed of 60 of fuel (That HURTS) but it does not seem to have made any difference. They have changed the fuel filter but it is no different. Can anyone throw any light...
Reply With Quote
  #2  
Old 12-31-2002, 05:37 PM
Member
 
Join Date: Jul 2002
Location: Carson City Nevada
Posts: 59
I had the same problem with my TE with the exception of the water in the tank. My idle speed control valve was sticking. It's located under the air cleaner with a couple of vacuum hoses attached. The pivot point on the back of it had rust on it therefore was not springing closed or open (don't know which) and the car would die but only when approaching a stop. This would not affect the car off of idle. It may be something to check if it does stall when approaching a stop.
Reply With Quote
  #3  
Old 12-31-2002, 05:48 PM
Moderator
 
Join Date: Dec 2001
Location: Southern California, U.S.A.
Posts: 8,508
What year is your car and what engine do you have?

I was going to suggest replacing your OVP, but on the older KE fuel injection systems, the engines will run fine with a failing OVP or even w/o the OVP.

1993 and newer 300TE's have the newer electronic HFM system, and could exhibit your problem with a bad OVP.
__________________
Paul S.

2001 E430, Bourdeaux Red, Oyster interior.
79,200 miles.

1973 280SE 4.5, 170,000 miles. 568 Signal Red, Black MB Tex. "The Red Baron".
Reply With Quote
  #4  
Old 01-01-2003, 08:03 AM
Registered User
 
Join Date: Apr 2002
Location: Surrey, Uk
Posts: 254
Bad fuel pump relay is a common fault that would cause these symptoms.

OVP relay problems will bring up the ABS light.

Dirty idle speed control valve would not affect high speed or on-load uphill operation.
__________________
Mick J
'08 Chrysler 300CRD (MB OM 642 engine)
'95 E220 estate
'89 230TE (R.I.P.)
Reply With Quote
  #5  
Old 01-01-2003, 08:51 AM
simonlang
Guest
 
Posts: n/a
Sorry, the car is 1988-9 2.9L does this help?
Reply With Quote
  #6  
Old 01-01-2003, 12:02 PM
it leaks, its german
 
Join Date: Mar 2002
Location: raleigh nc
Posts: 1,111
103 motor?


I'd be looking at the seconday ignition and the crank sensor.



Joe
__________________
Project Smoker, '87 603 powered wagon
Hauler, 96 CTD can you say torque?
Toy 73 Cougar xr7 convertible
Acme Automotive Inc.
Raleigh NC
919-881-0364
Reply With Quote
  #7  
Old 01-01-2003, 03:02 PM
Registered User
 
Join Date: Jan 2002
Location: England
Posts: 1,841
Not likely OVP, very likely Fuel Pump relay - as Mick J says - it's a common problem.

If you're inclined, do a little searching on this forum and you'll find out where the fuel pump relay is and what it looks like, and you can open it up yourself to check for broken joints, which are usually the problem. I did around a year ago, resoldered them (easy job), and my random stopping problems disappeared.

Or buy a new one, they're not tooo expensive.

I'd put money on it fixing your problem.
__________________
190E's:
2.5-16v 1990 90,000m Astral Silver
2.0E 8v 1986 107,000m Black 2nd owner
http://www.maylane.demon.co.uk/190esmall.jpghttp://www.maylane.demon.co.uk/190esmall2.jpg
Reply With Quote
  #8  
Old 01-07-2003, 09:32 AM
simonlang
Guest
 
Posts: n/a
Had my local people fit a new fuel pump relay, but the car still has the same symptoms and problem. Any other suggestions please?
Reply With Quote
  #9  
Old 01-07-2003, 01:03 PM
Moderator
 
Join Date: Dec 2001
Location: Southern California, U.S.A.
Posts: 8,508
Quote:
Originally posted by joe p

103 motor?
I'd be looking at the seconday ignition and the crank sensor.
Joe
Joe is a Mercedes Benz Service and Repair facility shop owner, so his advice is probably worth looking into. The rest of us are just knuckleheads...
__________________
Paul S.

2001 E430, Bourdeaux Red, Oyster interior.
79,200 miles.

1973 280SE 4.5, 170,000 miles. 568 Signal Red, Black MB Tex. "The Red Baron".
Reply With Quote
  #10  
Old 01-07-2003, 04:04 PM
BENZ-LGB's Avatar
Strong, silent type
 
Join Date: Apr 2001
Location: Southern California
Posts: 1,663
check the...

...Hall effect sensor. It sets the idle speed based upon some math formula (don't ask me to explain it any further). When it is defective, the sensor can cause symptoms similar to the ones that you have described.

It is a tiny part that attaches to the back of the speedo in your car. Has anyone pulled the instruments out recently? Sometimes the sensor becomes disconnected when the instrument cluster is pulled out.

Good luck, those are marvelous wagons!
__________________
Current Benzes

1989 300TE "Alice"
1990 300CE "Sam Spade"
1991 300CE "Beowulf" RIP (06.1991 - 10.10.2007)
1998 E320 "Orson"
2002 C320 Wagon "Molly Fox"

Res non semper sunt quae esse videntur

My Gallery

Not in this weather!
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 12:21 PM.


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