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Fuel Pump Not Running Properly
Posted 30 January 2007 - 06:08 PM
Yesterday afternoon, I went to start my Loyale, and it started up just fine. I turned it off after a few minutes of idling, and then it wouldn't start again.
I connected the green test connectors and turned the key on, and the fuel pump didn't cycle. I could hear the relay clicking, but no whirring fuel pump. I checked all of the fuses and fusible links, all good. I spent part of the afternoon looking up replacement fuel pumps on the internet.
This morning, I tried cranking the car over, just for kicks... It starts up right away, no problems. I let it idle for a couple of minutes, then turn it off, and it starts right up again when I crank it. The problem seems to have disappeared.
So, opinions on the problem - is it fuel pump wiring, or fuel pump? Or, is it something else?
Posted 30 January 2007 - 06:44 PM
In his case it would usually start when warm, not when cold. So, I thought it was a CTS issue. However, he was able to start the car by push-starting it (must've bumped the fuel pump).
Since I put a different pump in he hasn't had any issues. Only thing I can figure is that when the pump stopped in a certain place, it would catch, and not want to start pumping again until it was jostled around a bit.
Next time it doesn't want to work, connect the greens, then go tap (bang) on the pump with a hammer. If it starts pumping, it's the pump and not the wiring/FPCU.
Posted 30 January 2007 - 07:21 PM
No need to hook up the green connectors, just listen for the fuel pump when you first turn the key on. It should cycle for a second or so.
I'm sure there are other possibilities, but my bet is that your pump is going out, too.
Posted 30 January 2007 - 07:23 PM
Posted 30 January 2007 - 11:01 PM
Thanks for the 2nd, 3rd, and 4th opinions!
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