2nd Generation Specific (1986-1992) 1986-1992 Discussion including performance modifications and technical support sections.
Sponsored by:

Tach problems after fuel controler install

Thread Tools
 
Search this Thread
 
Old 02-25-05, 10:39 PM
  #1  
Rx-hippie

Thread Starter
iTrader: (1)
 
trainwreck517's Avatar
 
Join Date: Sep 2003
Location: Torrance CA
Posts: 2,076
Likes: 0
Received 0 Likes on 0 Posts
Exclamation Tach problems after fuel controler install

My stock tach will work fine if I have parking and driving lights off. But will not work till about 1.5k if I have the parking lights on, and will not work at all if the driving lights are on. All this happend after the install of Megasquirt fuel controler. Tach signal is being pulled off the trailing coils.. Fuel computer gets tach signal no mater if lights are on or off. If I unplug the tach signal for the fuel computer while lights are on, the stock tach will start operating.

Is this a common problem for 2nd Gens? Might happend with after market tachs..

What is the cause of this problem? I tryed searching, but didn't find a thing.

Any help or ideas is greatly apreciated. Thanks.
Old 02-26-05, 02:09 AM
  #2  
Rx-hippie

Thread Starter
iTrader: (1)
 
trainwreck517's Avatar
 
Join Date: Sep 2003
Location: Torrance CA
Posts: 2,076
Likes: 0
Received 0 Likes on 0 Posts
bump
Old 02-26-05, 12:27 PM
  #3  
Rx-hippie

Thread Starter
iTrader: (1)
 
trainwreck517's Avatar
 
Join Date: Sep 2003
Location: Torrance CA
Posts: 2,076
Likes: 0
Received 0 Likes on 0 Posts
Originally Posted by trainwreck517
bump
anyone?
Old 02-26-05, 04:58 PM
  #4  
I'm a boost creep...

 
NZConvertible's Avatar
 
Join Date: Jan 2002
Location: Auckland, New Zealand
Posts: 15,608
Likes: 0
Received 8 Likes on 8 Posts
Originally Posted by trainwreck517
Is this a common problem for 2nd Gens? Might happend with after market tachs...
No, it is almost certainly a wiring mistake. The tacho and lighting circuits are not normally connected in any way, so something has changed with the MegaSquirt install.

Last edited by NZConvertible; 02-26-05 at 05:01 PM.
Related Topics
Thread
Thread Starter
Forum
Replies
Last Post
trickster
2nd Generation Specific (1986-1992)
25
07-01-23 04:40 PM
gabescanlon
Interior / Exterior / Audio
1
08-11-15 05:59 PM



Quick Reply: Tach problems after fuel controler install



All times are GMT -5. The time now is 02:40 PM.