No power to fuel pump HELP NEEDED!!
07-23-16, 08:32 PM
#1
Driver School Candidate
Thread Starter
Join Date: Jul 2016
Location: Washington
Posts: 2
Likes: 0
Received 0 Likes
on
0 Posts
No power to fuel pump HELP NEEDED!!
have a 1993 sc300. Im not getting power to my fuel pump. The car turns over but will not start due to no fuel. i have power at the FP ecu, and when i jump the relay (under the hood) the FP kicks on and the car starts right up. i bought a new relay and the car still doesn't start. Iv been hearing the issue could be the ECM, but im lost and out of ideas. Has anyone else had this issue? please HELP!!
07-23-16, 09:57 PM
#3
Driver School Candidate
Thread Starter
Join Date: Jul 2016
Location: Washington
Posts: 2
Likes: 0
Received 0 Likes
on
0 Posts
Yes I have. When I bought the car it has issues with the fuel pump ecu so I did the 12v mod. Iv been driving it like that for about 6 months without any issues
07-24-16, 06:31 AM
#4
have a 1993 sc300. Im not getting power to my fuel pump. The car turns over but will not start due to no fuel. i have power at the FP ecu, and when i jump the relay (under the hood) the FP kicks on and the car starts right up. i bought a new relay and the car still doesn't start. Iv been hearing the issue could be the ECM, but im lost and out of ideas. Has anyone else had this issue? please HELP!!
When you say you have power at the FP ECU , that means your EFI main relay which supply power to your FP ecu and ALSO to the Fuel Pump is good .
On the diagnostic port bolted near your intake manifold, short the +B and FP terminals .. you should hear your fuel pump running and car should start if fuel delivery was just the problem. Shorting those terminals is actually bypassing the FP ECU and applying direct power to the Fuel Pump when the ignition switch is turned on. IF the car started , you know that the FP ecu is bad.
Last edited by gerrb; 07-24-16 at 06:42 AM.
Thread
Thread Starter
Forum
Replies
Last Post