Show full size 924Board.org
Discussion Forum of 924.org
 
 FAQFAQ   SearchSearch   MemberlistMemberlist   UsergroupsUsergroups   RegisterRegister 
 ProfileProfile   Log in to check your private messagesLog in to check your private messages   Log inLog in 
 Technical FAQ924 FAQ (Technical)   Technical924 Technical Section   Jump to 924.org924.org   Jump to PCA 924 Registry924 Registry

What would cause a 931 fuel pump fuse to fail?
Goto page Previous  1, 2, 3
 
Post new topic   Reply to topic    924Board.org Forum Index -> 931 Tech.
View previous topic :: View next topic  
Author Message
Fifty50Plus  



Joined: 28 Feb 2008
Posts: 1138
Location: Washington DC area
PostPosted: Wed Oct 21, 2020 4:09 am    Post subject: Reply with quote
Sounds like your issue was the negative terminal on the battery (intermittently not connected). If your radio dropped on and off at the same time as the car running rough, they both share a need for a ground. Clean and clamp it tight, then drive.
_________________
1979 924 NA race car
1982 924 NA race car - Sold
1982 924 Turbo almost a PoS
1981 924 Turbo a real PoS, new engine
1982 924 Turbo nice body, blown engine
1972 911 E race car - going to Vintage
Various 944s to become IT-S race car
Back to top
View user's profile Send private message
chuck21401  



Joined: 20 Feb 2005
Posts: 322
Location: Annapolis, MD
PostPosted: Thu Oct 22, 2020 2:17 am    Post subject: Reply with quote
Fifty50Plus wrote:
Sounds like your issue was the negative terminal on the battery (intermittently not connected). If your radio dropped on and off at the same time as the car running rough, they both share a need for a ground. Clean and clamp it tight, then drive.


Yeah, it does seem like a grounding issue. It's possible that the negative terminal was loose. It's definitely tight now. And the cable running from battery to the body looks like new including the bolt to the body.

I'm going to double check other grounds. When I was under the dash last time I checked the grounds...everything was tight and looked like the PO had cleaned each ring connector and there was new bolt there as well.

The ground from the alternator to the intake manifold looked old so I bought a replacement for $12. I plan to replace that...but looks like I need to move the alternator to get the bolt out....not a big deal...just a bit more involved.

And will also check to see that other wires are tight......maybe something is coming loose from vibration.


_________________
1981 Porsche 931
Back to top
View user's profile Send private message
Display posts from previous:   
Post new topic   Reply to topic    924Board.org Forum Index -> 931 Tech. All times are GMT + 11 Hours
Goto page Previous  1, 2, 3
Page 3 of 3

 
Jump to:  
You cannot post new topics in this forum
You cannot reply to topics in this forum
You cannot edit your posts in this forum
You cannot delete your posts in this forum
You cannot vote in polls in this forum


Powered by phpBB © 2001, 2005 phpBB Group