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Subject: Cold starting S O L V E D ! may want to post to e38.org Author: alexe : member since June, 2004 : 380 posts Posted on: 2011-02-03 17:17:17

Hello all...
Had this problem for more than 1 cold weather season. I'm in the dallas area and when it got cold (below 40f or so) car was hard to start. It would crank...but wouldn't fire up...and when it did it would stumble and sometimes stall. Well on the advise of bmw635 I swapped the fuel pump relay and the rear window defroster relay (in the trunk). Low and behold...IT WORKED! It was 18f here yesterday and car started right up! I guess that relay wasn't getting energized enough to build up fuel pressure. Such a simple fix! That fuel pump relay is a multi-function relay (mint green color) so it has multi-purposes in the car. Good info for all as I've seen other people with the same problem post on here.
Thanks again to bmw635...and to this board...donation to follow!

Dave
97 740il

• Cold starting S O L V E D ! may want to post to e38.org - alexe 2011-02-03 17:17:17 (7356 views)
  • No problem with cold starts, but I'll keep this mind just in case-Thanks! (nt) - cyberdactyl 2011-02-05 18:53:23 (2724 views)
  • Peter rocks. Has helped me quite a few times with both cars. (nt) - Bayou Bimmer 2011-02-05 08:41:58 (224 views)
  • Awesome...What this board is all about (nt) - steveKC 2011-02-04 12:42:56 (161 views)
  • Nice catch! This board is awesome! (nt) - Edwin™ 2011-02-04 12:02:37 (144 views)
  • Sometimes the easy fixes feel so good ! (nt) - Reno, just a saga now 2011-02-04 03:21:54 (206 views)
  • Thanks for the tip! (nt) - DavidC 2011-02-03 23:05:57 (164 views)
  • Glad you got it fixed. As you said that topic has come up - JoeC 98 740il & 750il 2011-02-03 22:21:00 (221 views)