Fuel issues. Need Help
Thread Starter
Driver School Candidate
Joined: Oct 2015
Posts: 7
Likes: 0
From: AZ
Fuel issues. Need Help
Im having a fuel issue on my 1993 SC300
It was running fine, then as I was backing out of the driveway it just died. Would not restart. To troubleshoot, I sprayed starting fluid in intake and it momentarily startedu up. Figuring it was a fuel issue, I tried changing the fuel pump. Still did not start. I also tried the ECU locatdd in the back seat driver side module. Still did not start. I tried swapping the fuse under the hood labeled EFI with the defroster fuse and still did not start. I dont hear the pump start or prime on the turn of the key.
I am out of options. Can you offer any advice?
It was running fine, then as I was backing out of the driveway it just died. Would not restart. To troubleshoot, I sprayed starting fluid in intake and it momentarily startedu up. Figuring it was a fuel issue, I tried changing the fuel pump. Still did not start. I also tried the ECU locatdd in the back seat driver side module. Still did not start. I tried swapping the fuse under the hood labeled EFI with the defroster fuse and still did not start. I dont hear the pump start or prime on the turn of the key.
I am out of options. Can you offer any advice?
Pole Position
Joined: May 2015
Posts: 208
Likes: 0
From: CA
Im having a fuel issue on my 1993 SC300
It was running fine, then as I was backing out of the driveway it just died. Would not restart. To troubleshoot, I sprayed starting fluid in intake and it momentarily startedu up. Figuring it was a fuel issue, I tried changing the fuel pump. Still did not start. I also tried the ECU locatdd in the back seat driver side module. Still did not start. I tried swapping the fuse under the hood labeled EFI with the defroster fuse and still did not start. I dont hear the pump start or prime on the turn of the key.
I am out of options. Can you offer any advice?
It was running fine, then as I was backing out of the driveway it just died. Would not restart. To troubleshoot, I sprayed starting fluid in intake and it momentarily startedu up. Figuring it was a fuel issue, I tried changing the fuel pump. Still did not start. I also tried the ECU locatdd in the back seat driver side module. Still did not start. I tried swapping the fuse under the hood labeled EFI with the defroster fuse and still did not start. I dont hear the pump start or prime on the turn of the key.
I am out of options. Can you offer any advice?
Dude,
Did you read any error codes?
.
Pole Position
Joined: May 2015
Posts: 208
Likes: 0
From: CA
Dude,
Have you opened the diagnostic port and shorted TE1 and E1 to display error codes via the CHECK ENGINE light on the dashboard?
http://www.cygnusx1.net/Supra/TechTi...ror_codes.aspx
.
Thread Starter
Driver School Candidate
Joined: Oct 2015
Posts: 7
Likes: 0
From: AZ
NO I haven't tried that. I may have inadvertently deleted the codes tho. I have pulled that fuse and tried the defroster fuse in its place to test it. I bet I erased the error code at that point.
Pole Position
Joined: May 2015
Posts: 208
Likes: 0
From: CA
Dude,
Any error codes are stored in the main engine ECU. As long as the battery wasn't disconnected, the code/s will still be there.
.
Trending Topics
ClubLexus Stories
Celebrating Lexus & Toyota from Around the Globe
Top 10 Most Confusing Things Lexus Has Ever Done!
Joe Kucinski
2026 Lexus ES Review: Lexus Re-Embraces Founding Principles
Michael S. Palmer
10 Lexus Bargains That are Cheaper Than a New Toyota RAV4
Joe Kucinski
8 Weirdest Things Lexus Has Ever Built
Verdad Gallardo
10 Lexus Designs That Have Aged Like Fine Wine
Verdad Gallardo
8 Tips for Improving Your Hybrid or Plug-in Hybrid's Efficiency!
Michael S. Palmer
10 Best Lexus Models No One Remembers
Joe Kucinski
TRD Off-Road Premium: Best 2026 4Runner, Except This One Thing
Michael S. Palmer
Top 10 Lexus & Toyotas to Drive Before You Die!
Joe Kucinski
Driver School Candidate
Joined: Jul 2015
Posts: 20
Likes: 0
From: California
I know that fuel system is on the middle body plug that is in the far back by the firewall. I dont know the name of it and havent found any body plug pinouts(was looking yesterday to check my harness) Its gray and has some pretty thick gauge wires going to it. Maybe check if your getting signal their when you turn ignition on?
Thread Starter
Driver School Candidate
Joined: Oct 2015
Posts: 7
Likes: 0
From: AZ
I know that fuel system is on the middle body plug that is in the far back by the firewall. I dont know the name of it and havent found any body plug pinouts(was looking yesterday to check my harness) Its gray and has some pretty thick gauge wires going to it. Maybe check if your getting signal their when you turn ignition on?
Thread Starter
Driver School Candidate
Joined: Oct 2015
Posts: 7
Likes: 0
From: AZ
I hate to take my car to the shop for anything. I do almost all the work myself.... normally. This problem was tougher to diagnose than I am capable of. At least in a rush. This is my only vehicle and it costs me more to try and fix it myself if I figured down time and business lost because of it.
Driver School Candidate
Joined: Jul 2015
Posts: 20
Likes: 0
From: California
I guess I'm going to have give in and take my car to a mechanic. I took it to a mechanic in Sept and the guy said I needed a new harness. And it was gonna be $1200 for everything. That afternoon I pulled my harness out and sentit in to Dr. Tweak when ended up saying the harness was fine. So I sort of lost trust with mechanics.
Thread
Thread Starter
Forum
Replies
Last Post
mungrin
SC - 1st Gen (1992-2000)
6
Jan 1, 2014 01:14 PM
kmoore737
SC - 1st Gen (1992-2000)
4
Oct 30, 2012 11:12 AM
