1991 Mercedes 300e hard starting

1991 ALL OTHER MAKES ALL OTHER MODELS
Avatar
GEOBARRY
  • MEMBER
  • 1 POST
My 1991 300e, 170k, 6cyl, 4spd auto, will not start when cold. I have to use, gasp, starting fluid to get it going. When it warms up, it starts OK, it runs smoothly, no notable engine or belt noises, no overheating, shifts smoothly, accelerates a little slowly from standing start and at low rpm, but gets legs at about 3000 rpm. I am thinking fuel pump, but hate to start blindly replacing things. Any advice for trouble shooting and possible causes. thanx
Mar 21, 2006 at 11:52 AM
Avatar
STRAILER
  • ✓Experienced Mechanic
  • 55,554 POSTS
Check your thermo time switch, if it is shorted it will not let the enrichment protion of the fuel injection to operate when cold.
Mar 22, 2006 at 7:44 AM
Add a reply
Join 2CarPros for free, one of the most advanced car repair communities on the internet. From first-time drivers to seasoned mechanics, everyone is welcome to reply, share details, and get better answers. You can add a temporary image or video first; uploads are limited to 20 MB.

Frequently Asked Problems for This Vehicle