View Full Version : 62/63 Harness missing Pin 105
Socal240sxSr20det
10-12-2019, 02:35 PM
I'm currently trying to get my blacktop sr20det to start and i'm having issues with my fuel pump not priming. I noticed that pin 105 is missing for "Fuel pressure control module". Its a wiring specialties harness, used. No unpinned wires are coming out of the loom so, i'm confused. Is this the cause of my issue, or its not needed.
S14rebuild
10-12-2019, 02:43 PM
Pin 105 is not needed on an sr20 swap
Lets get to basics...
Do you have spark?
Do you have fuel pressure?
Do you have injector pulse?
Socal240sxSr20det
10-12-2019, 02:49 PM
Yes, i'm getting spark, and injectors are firing. When i turn the CAS i can hear/feel the fuel pump relay clicking but the pump will not prime. I've checked and i'm getting power through the front harness, and to pin 104. But no power to the fuel pump harness, but it works fine on the bench test. I've tried 2 ecu's and don't think thats the issue. switched relay's and fuel pump fuse.
S14rebuild
10-12-2019, 06:59 PM
If the fuel pump relay is clicking then 3 things
1 bad relay
2 bad wiring from relay to fuel pump
3 bad fuel pump
Uve eliminated 1 and 3
Sonid be tracing wires from your fuel pump relay, to ur fuel pump.
Also make sure the fuel pump is grounded properly
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