![]() ![]() Maybe there is some odd chance that the fuel filter is causing this, but fairly unlikely with the symptoms and things you have done to get it to run. If you haven’t checked the fuel pressure, this would be step one in checking the fuel system.Īt least with what you’re saying is happening it really sounds like a bad fuel pressure regulator that is integrated into the the fuel pump assembly. Also make sure and change the fuel filter at the same time. The fix will likely be to replace the pump assembly. Unfortunately the fuel pressure regulator is integrated with the fuel pump assembly. ![]() The fuel pressure regulator must be stuck open and is allowing the fuel to return and not allow enough fuel pressure to the injectors. One of the lines supplies fuel to the engine. It sounds like you may have a bad fuel pressure regulator. And in doing so the car will now run with the line pinched. So it sounds as if you’re saying you have pinched the fuel line to block flow. In fact the most recent Cobalt I had at the shop was last week and it has the issue of the inoperative fuel gauge. I have a lot of Cobalts and other GM cars from this era come in to the shop and have inoperative fuel gauges a lot of times. They may still be stuck in the connector but not set deep enough into it and over time will loose connection.Īnyways that’s a common issue I have run into over the years. The wires can be pulled out of the plastic connector. Especially if the connector wasn’t replaced with the fuel pump. Also sometimes the connector that goes onto the fuel pump may be faulty from being pulled on when removing or installing the new fuel pump. Sometimes people will forget to seal the connector and it can cause the wire end that is stripped to fit into the connector to corrode or pull out. The connectors are supposed to be heated so the heat shrink will melt around the wiring sealing out corrosion and also keeping the wires securely connected into the butt connectors so they can’t pull out with vibration. Usually it is splicers into the wiring using weather tight butt connectors. Actually many times the new fuel pump will come with a new harness, also sometimes called a pig tail connector. By the lines and plug, do you mean the wiring harness? It is not uncommon to have issues with the wiring that goes to the fuel pump. ![]()
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