420 sel starting and stalling problems - Mercedes Forum - Mercedes Benz Enthusiast Forums
Mercedes Benz Forums

Go Back   Mercedes Forum - Mercedes Benz Enthusiast Forums > General Mercedes Benz Forums > General Tech
Sign in using an external account
Register Forgot Password?

Welcome to Mercedes Forum!
Welcome to Mercedes Forum.

You are currently viewing our forum as a guest, which gives you limited access to view most discussions and access our other features. By joining our community, at no cost, you will have access to start new topics, reply to conversations, privately message other members (PM), respond to polls, upload content and access many other special features. Registration is free, fast and simple, join Mercedes Forum today!

LinkBack Thread Tools Search this Thread
Old 08-19-2007, 06:25 PM
Join Date: Aug 2007
Posts: 1
Default 420 sel starting and stalling problems

I have a 89 420 sel that has recently begun to give me problems starting. I get in the car and it starts right up and runs great, I get to work 5 min from my house and when I come out of the office to go home it won't start. Turns over great but won't start. Yesterday I finally drove it a longer distance and it stalled while driving, it started a couple more times and let me go about 300 ft each time, but eventually quit and had to be towed. Any ideas?
Register today for free or log in if already registered to remove this ad!
Reply With Quote
Old 08-19-2007, 11:14 PM
Senior Member
Join Date: Aug 2007
Posts: 174
Default RE: 420 sel starting and stalling problems

I am gonna say it may be a fuel pump relay. Extremely common during summertime. It should be located on the firewall next to engine control unit and klima relay. Other than that, i'd say possibly a "green lead" which is essentially the same as a crank position sensor but mounted inside the distributor and runs to the ignition control unit. Also, dist cap and rotors have trouble with the heat if the contacts are faulty. With this vehicle, there are many variables which can cause so many problems but I would start with the fp relay first. You can take the fp relay casing off and inspect for a solder joint which breaks and depending on temperature makes contact. Eay to do if you know what u r looking for but probably difficult if u don't
Reply With Quote
Old 08-19-2007, 11:14 PM

1991, 420, 420sel, 89, benz, common, faulty, forums, fuel, issues, mercedes, problems, pump, sel, stalling, symptoms

Thread Tools Search this Thread
Search this Thread:

Advanced Search

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 Off
Trackbacks are On
Pingbacks are On
Refbacks are On

Featured Sponsors
Vendor Directory
Our Sponsors
Monroe, WA 98272
All times are GMT -5. The time now is 11:55 AM.

Internet Brands, Inc.