The most common issues that crop up after a poorly done fuel pump installation are: Your engine loses power and fuel efficiency.
When the fuel pump isn’t working right, your engine isn’t getting the amount of fuel it needs to run well.
If a fuel pump isn’t installed correctly, it either won’t work at all or won’t supply enough fuel to the engine. What Happens If A Fuel Pump Isn’t Installed The Right Way? Even the most experienced techs can make mistakes on a fuel pump replacement. It’s not easy to replace a fuel pump, but avoiding the most common mistakes will help the job go much more smoothly. Hopefully someone here has been through this and can shed some light on this problem.A surefire way to reduce comebacks is to install a part the right way the first time. Is there a way to test the ECM or is it just hit or miss? I can't figure out why the fuel pump will not prime when turning key "on", but works fine when car is running. I'm afraid that after sitting overnight, it will once again refuse to start. Put the fuel pump relay back in and it starts and drives, but the fuel pump still doesn't prime when turning the key on. Pulled fuel pump relay and put in a jumper wire to run the fuel pump and it started. Tried to pull crank sensor again and ended up cracking it somehow, so had to get a new one. After driving it home, I tried to start it a few hours later and it again wouldn't start. After I put the old one back in, I tried to start it again and it started. After finding out that it was 70 bucks, I wanted to find out if I could test it before I got a new one. While checking different things, I pulled the crank sensor. When I turn the key to the "on" position, the fuel pump doesn't kick on. My 01 Tiburon wouldn't start the other day.
I've been trying to figure this out for a couple days now.
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