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

LinkBack Thread Tools Display Modes
Old 06-20-2006, 06:27 PM
Registered User
Join Date: Jun 2006
Posts: 5
1992 190E Won't start when hot.

This is a new car I just bought so I don't have any history. I determined that the fuel pump cuts out after a couple of seconds starting it when hot so it won't start. I jumpered pins 9 and 7 in the fuel pump relay, now it starts and runs fine. Pin 12 is labelled crank rpm and I have no input from that. Is this the crankshaft position sensor? Does that sound like the problem, and how hard is it to change? Is it under the engine? Any help would be appreciated.

Reply With Quote
Old 06-21-2006, 08:26 AM
Join Date: Mar 1999
Location: Tucker, Ga USA
Posts: 12,153
If the crank sensor was the problem the engine wouldn't start even with the fuel pump relay jumped!

That signal is from the EZL (ignition module), it takes the crank signal (AC sine wave) & processes it into a DC (square wave) signal.
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
Old 06-21-2006, 10:23 AM
Registered User
Join Date: Jun 2006
Posts: 5
190e won't start hot

Thankyou - so does that take me to the ignition module being bad?? I can't find anything telling me how to check that input- or am I headed up the wrong path.


Reply With Quote


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 01:06 PM.

Powered by vBulletin® Version 3.8.7
Copyright ©2000 - 2022, 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