Neeeed help baddd

Tiny
NICKOLAS MOORE
  • MEMBER
  • 1997 MITSUBISHI 3000GT
  • 6 CYL
  • 2WD
  • MANUAL
  • 30,000 MILES
1997 mitsu 3000gt
Fuel pump relay works wen power is crossed over, car runs fine!
But new relay(s)! Will not start car?
Whats my problem?
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Wednesday, August 17th, 2011 AT 10:13 PM

7 Replies

Tiny
PROTECH1980
  • EXPERT
What ever sends signal to close relay is not working, do you have a repair manual that has wiring diagrams, use a multi meter at relay to find out what is missing, then follow wiring diagram to diagnose.
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Wednesday, August 17th, 2011 AT 10:17 PM
Tiny
NICKOLAS MOORE
  • MEMBER
I cant find a manual or website that is detailed enough to tell what each wire powers what?
And its too hard to trace where each wire goes?
I checked the power on the two live connections that are now crossed over, theres power
In each?
I thought I got faulty relays but now ive tried two pair of new relays with no success!
So it definatly a wire problem somwhere?
Is there a wesite that can show me where each colored wire goes?
Thanx so much!
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Thursday, August 18th, 2011 AT 11:27 AM
Tiny
PROTECH1980
  • EXPERT
I am sorry, I cant get that diagram, maybe someone else could post it.
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Thursday, August 18th, 2011 AT 4:40 PM
Tiny
JDL
  • EXPERT
Here you go. The control side of relay, is grounded by the pcm. So you do have voltage to both the load and control side of relay?
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Thursday, August 18th, 2011 AT 5:04 PM
Tiny
PROTECH1980
  • EXPERT
Thanks JDL.
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Thursday, August 18th, 2011 AT 9:41 PM
Tiny
NICKOLAS MOORE
  • MEMBER
Thanx jdl!
Theres two identicle relays there one seems to work fine,
The other has power in two of the four connections?
Im thinking I have a bad wire goin to this relay?
Do you know where each colored wire goes?
Maybe I can run a new wire from A to B?
Im guessing power to the pump?
Im going to drop the tank and see if the colored
Wires coincide?
Any info is great!
Nick
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Friday, August 19th, 2011 AT 11:41 AM
Tiny
JDL
  • EXPERT
In the above diagram, Terminals 3 and 4 are voltage for the load and control side if relay. When the relay is energized that arm with the arrowhead moves to terminal 1, terminal 1 carries voltage to fuel pump. Terminal 2 is ground for the control side of relay. The pcm controls the ground. Pcm pin #8.
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Friday, August 19th, 2011 AT 8:04 PM

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