Thread: Intermittent problem: Tach dies and idle drops, gets rough.
View Single Post
  #36  
Old 07-27-2008, 10:21 PM
gsxr's Avatar
gsxr gsxr is offline
Unbanned...?
  
Join Date: Aug 2001
Location: USA
Posts: 8,102
Quote:
Originally Posted by Finster View Post
I have a 87 300D with the same tach and ABS problem. Tach stops working ABS light comes on, idle speed drops and it's rough to start. The manual says if the ABS light comes on, but the brakes work, it's the alternator not putting out the required voltage. A voltage check confirmed this. 14.2v when everything is jake and 13.5v to 13.7 when tach stops and ABS light is on? Any thoughts on the voltage regulator or alternator being the culprit?
Finster, it's the OVP. If the regulator was kaput, you'd either get no charging, or voltage in the 15-17 range.

Reply With Quote