Faulty fuel pump/relay after altering fuses
Faulty fuel pump/relay after altering fuses
This past weekend I hardwired my dash camera with an add-a-fuse adapter. I had some issues with choosing the fuse slot I wanted to tap into, so I ended up unplugging and reinserting different fuses on multiple occasions. After I finished, I noticed the Service Engine Soon (SES) light came on after I started the car. I forgot to disconnect the car battery while I was working with the fuses, so I thought it was an error within the ECU. I decided to reset the ECU by unplugging the battery for 30mins. This removed the SES light and it has not returned yet. I have been driving it for the last 5 days without any issues. My assumption was, if the SES was indicative of an actual error, the light would eventually return, but it has not. Please correct me if I have mistaken.
I was convinced at first that all was well, but then I noticed an abnormally loud hissing sound coming from the rear wheel area directly beneath the rear passenger seat during a cold start. The hissing sounds like a deflating tire valve, and it seems to only occur after the car has been sitting overnight. I found several threads of people complaining about this issue, but was unable to find a conclusive answer. The loud hissing seems to subside as I drive it. When I arrive to work, ~30mins/10miles later, the loud hissing becomes a much softer intermittent hiss. The best way I can describe the sound is like adding soapy water to a minuscule leak within a valve connection. It's not exactly a steady hiss, there's like an intermittent (metallic?) sputter in between.
Besides the hissing sound, the car seems to drive exactly the way it did before. Nothing noticeable that would suggest a faulty fuel pump. Since this problem arose after I messed with the fuses, my inclination is to think that it is electrical related. I found out that the fuel pump has an electrical relay that comes on with the ignition. Perhaps it's not broken, but instead a faulty connection of some sort in the relay due to not removing the battery when removing/inserting fuses?
TL;DR Is it possible that the fuel pump relay system was shorted/damaged when changing the fuses without the battery being disconnected?
I was convinced at first that all was well, but then I noticed an abnormally loud hissing sound coming from the rear wheel area directly beneath the rear passenger seat during a cold start. The hissing sounds like a deflating tire valve, and it seems to only occur after the car has been sitting overnight. I found several threads of people complaining about this issue, but was unable to find a conclusive answer. The loud hissing seems to subside as I drive it. When I arrive to work, ~30mins/10miles later, the loud hissing becomes a much softer intermittent hiss. The best way I can describe the sound is like adding soapy water to a minuscule leak within a valve connection. It's not exactly a steady hiss, there's like an intermittent (metallic?) sputter in between.
Besides the hissing sound, the car seems to drive exactly the way it did before. Nothing noticeable that would suggest a faulty fuel pump. Since this problem arose after I messed with the fuses, my inclination is to think that it is electrical related. I found out that the fuel pump has an electrical relay that comes on with the ignition. Perhaps it's not broken, but instead a faulty connection of some sort in the relay due to not removing the battery when removing/inserting fuses?
TL;DR Is it possible that the fuel pump relay system was shorted/damaged when changing the fuses without the battery being disconnected?
Thread
Thread Starter
Forum
Replies
Last Post
boweld
Engine, Drivetrain & Forced-Induction
2
Nov 27, 2018 01:49 PM
Dan08g37s
Engine, Drivetrain & Forced-Induction
4
Oct 26, 2017 03:49 PM