Check connector, and fuel pump relay rewire/hotwire...
#1
Check connector, and fuel pump relay rewire/hotwire...
the car: 1991 s5 FC
ok heres my deal... i need to find the check connector... thats all i know
and now i wanna know if anyone has ever rewired thier fuel pump and used a toggle switch instead of relying on the relay, or if they have somehow bypassed the relay... if there is a writeup on this somewhere can someone send me the link, i have been searching forever... thanks
ok heres my deal... i need to find the check connector... thats all i know
and now i wanna know if anyone has ever rewired thier fuel pump and used a toggle switch instead of relying on the relay, or if they have somehow bypassed the relay... if there is a writeup on this somewhere can someone send me the link, i have been searching forever... thanks
#2
I'm a boost creep...
Join Date: Jan 2002
Location: Auckland, New Zealand
Posts: 15,608
Likes: 0
Received 8 Likes
on
8 Posts
It's beside the right strut tower in the engine bay. It's a bright yellow 2-pin connector.
Operating the fuel pump with a switch is a terrible idea. Why would you want to do that?
Operating the fuel pump with a switch is a terrible idea. Why would you want to do that?
#4
(blank)
iTrader: (1)
Please verify you're looking for the fuel pump check connector and tell us why.
If you're trying to connect a fuel cutoff switch, you don't have to bypass the relay - you just have to wire a switch before the relay coil (low current side). The circuit opening relay is located under the steering column.
If you're trying to connect a fuel cutoff switch, you don't have to bypass the relay - you just have to wire a switch before the relay coil (low current side). The circuit opening relay is located under the steering column.
#5
I'm a boost creep...
Join Date: Jan 2002
Location: Auckland, New Zealand
Posts: 15,608
Likes: 0
Received 8 Likes
on
8 Posts
That won't work quite that simply. The circuit opening relay has two coils that can trigger the switch; one from the start circuit (on during cranking) and the other from the AFM airflow switch (S4) or ECU (S5). You'd need to wire a double-pole switch across both circuits to be able to turn the tump off. It's easier just to put a normal switch in either the wire from the fuse or the wire to the pump (both at the relay).
#6
My first generation 7 ended up running off a toggle switch for the fuel pump. That was the WORST thing I ever did, keep it on the relay trust me youll thank us for it down the road!!
Chris
Chris
Trending Topics
#8
I'm a boost creep...
Join Date: Jan 2002
Location: Auckland, New Zealand
Posts: 15,608
Likes: 0
Received 8 Likes
on
8 Posts
The relay engine in the engine bay controls the fan speed. It doesn't turn it on and off.
Instead of asking random questions, tell us exactly what the problem is and I'm sure we can help you fix whatever's wrong.
Instead of asking random questions, tell us exactly what the problem is and I'm sure we can help you fix whatever's wrong.
#10
HAILERS
Join Date: May 2001
Location: FORT WORTH, TEXAS,USA
Posts: 20,563
Likes: 0
Received 21 Likes
on
19 Posts
So get your meter out and put one lead to gnd. Put the other lead into the backside of the large BLUE wire at the fuel pumps connector, with the plug connected up.
Actually the pumps plug has two halves. ON the chassis side of the plug the wire is BLUE. On the fuel pump side it turns to a black/white color.
Start the car and look at the voltage. Itll drop down from an initial 12v to approx 9 vdc after a few moments.
When the engine dies, see what the voltage reads.
No meter.....no help.
Actually the pumps plug has two halves. ON the chassis side of the plug the wire is BLUE. On the fuel pump side it turns to a black/white color.
Start the car and look at the voltage. Itll drop down from an initial 12v to approx 9 vdc after a few moments.
When the engine dies, see what the voltage reads.
No meter.....no help.
Thread
Thread Starter
Forum
Replies
Last Post
trickster
2nd Generation Specific (1986-1992)
25
07-01-23 04:40 PM