1998 BMW 740 temp gage pegs cold

1998 BMW 740
76,000 MILES • V8 • 2WD • AUTOMATIC
Avatar
PURINEAUTO
  • MEMBER
  • 2 POSTS
master tech 1990-2015 3 days in. I have no power to sending unit. evaporator drain hose was kinked and filled floor with water. power dist. box was badly corroded as well as splices directly in front of it . several wires were corroded and broken I cut wires and installed eyelets to dist. box and tested all wires with logic probe this fixed power to obd port . temp gage will work int. no change there. all data no help. car was just purchased and I have no history on it. where should I go from here?
Sep 10, 2010 at 7:35 AM
Advertisement
Avatar
DOCHAGERTY
  • ✓Experienced Mechanic
  • 9,606 POSTS
Inside the electrical distribution box is a 5 fuse block, check all for continuity.
Sep 10, 2010 at 8:34 PM
Avatar
PURINEAUTO
  • MEMBER
  • 2 POSTS
I replaced all of the wire ends with eyelets and bolted them down. all of the wires have power coming out of the power dist. box. I also checked and repaired the splices directly in front of the box. the guage does work intermittently. where does the power go from there? computer? module in pass kick panel? the guage? where to next? If only alldata had a wiring diagram! thank you for your help! at least now I have a starting point.
Sep 11, 2010 at 9:41 AM
Avatar
DR LOOT
  • ✓Experienced Mechanic
  • 2,311 POSTS
Check this out...http://www.wedophones.com/BMWManualsLead.htm
Sep 27, 2010 at 4:44 PM
🔧 Tools & Auto Repair Parts
Find automotive tools, diagnostic equipment, and replacement parts for your next repair.
Shop on Amazon →
Paid affiliate link. As an Amazon Associate, we earn from qualifying purchases.
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.

Ask a new question

Frequently Asked Problems for This Vehicle