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

Low fuel/seat belt idiot lights questions

Thread Tools
 
Search this Thread
 
Old 02-26-12, 11:30 PM
  #1  
Super-Pinoy

Thread Starter
iTrader: (3)
 
PnoyRx7's Avatar
 
Join Date: Jul 2009
Location: Hamilton, Ontario
Posts: 1,725
Received 16 Likes on 16 Posts
Low fuel/seat belt idiot lights questions

My fuel low level light never works
My seat belt light works intermittently

The gauge for the fuel reads correct

What or where is the problem so I can fix it ?
Old 02-26-12, 11:34 PM
  #2  
it go down in the dm

iTrader: (10)
 
danegerous's Avatar
 
Join Date: Jan 2005
Location: Vegas
Posts: 1,398
Received 6 Likes on 5 Posts
Cold solder joints in the idiot lights. You need to take it apart and remove the old solder, and redo them.
Old 02-26-12, 11:49 PM
  #3  
Cake or Death?

iTrader: (2)
 
clokker's Avatar
 
Join Date: Jan 2007
Location: Mile High
Posts: 10,249
Received 63 Likes on 53 Posts
Originally Posted by danegerous
Cold solder joints in the idiot lights. You need to take it apart and remove the old solder, and redo them.
Possibly, but that'd be the second thing I'd check.

The seat belt receiver has a connector at the base that's prone to dirt/water/general crap intrusion...check it (both sides) and clean as appropriate.

LOW fuel is- just like the fuel gauge sending unit- a ground, so it's easy to check.
Key ON, with the gang connector at the fuel tank bulkhead undone, run a jumper from the low fuel wire to ground. Essentially, you're duping the sending unit function, if the warning light comes on, the in-tank sender is bad.

If the light doesn't activate, you check the cluster solder joints (assuming it's not just a bad bulb) but keep in mind you could still have a bad sender as well.

I've had to redo the solder for the clock three times (because I suck, apparently) but the other joints in the cluster have been fine so far (and at twenty years, I wouldn't complain anyway).
Old 02-27-12, 12:37 AM
  #4  
088
...Serf of Taxifornia...

iTrader: (9)
 
088's Avatar
 
Join Date: Jul 2006
Location: Haywards 5000
Posts: 383
Likes: 0
Received 9 Likes on 7 Posts
s4: pages 15-170 & 15-171 in the FSM
s5: page T-46

s4 & s5 fuel warning connectors are identical. Buckle switches are identical. Seat belt warning connectors are different.
Attached Thumbnails Low fuel/seat belt idiot lights questions-seat_belt_s4_s5.jpg   Low fuel/seat belt idiot lights questions-low_fuel.jpg  
Related Topics
Thread
Thread Starter
Forum
Replies
Last Post
Queppa
New Member RX-7 Technical
8
09-02-18 09:53 AM
Professorpeanutrx7
New Member RX-7 Technical
5
08-15-15 01:38 PM



Quick Reply: Low fuel/seat belt idiot lights questions



All times are GMT -5. The time now is 01:53 PM.