Fuel delivery problem

First let me thank

1. Creators of the forum
2. Everybody who would care to give me some advice


My chevy s-10 91 , p/u, 4cyl, 2.5 L started having problems starting in the morning especially on wet rainy days. One day while driving I turned the AC on and the truck died right there. I was able to restart it some time later but it would stay running only if I slightly pushed the accelerator. Ok. I made it home and changed the fuel filter (oh naive me). I started the truck and it ran for some time but when I turned Ac on it died again. And this time wouldn't start at all. Plus my headlights stopped working. I replaced the fuel pump (the stainer was blown and apparently there was no pressure in the line). Hooked the pump but no result. I think I've blown something in the electrical department. I thank you in advance for any suggestions. How

How do i know that pump is getting voltage? how can I make sure it does/does not?
How do I check the relay?
What is it that I may've blown that shut my headlights? Voltage regulator?


Thank you one more time

if the strainer had a hole in it you might have a blockage somewhere in the fuel line, or even at the injectors. to check to see if the pump is operating, turn the key althe way to on position(without trying to start) and then go to the fuel tank and see if you hear it humming.

I don't know a lot so I could be wrong. Do you think it could be your altarnater? Not sure if I spelled it right.

On My '93 there is a little connector near the rear of the engine not connected to anything. That is a wire going to the high side of the fuel pump. If you measure the voltage, it has voltage on it when it is supposed to be running. (a few seconds when key first turned on, and all the time when engine running. If you are sure it is the fuel pump, you can also jumper it to 12 V and force the fuel pump to run for testing.

A good way to test the relay is replacing it with something temporarily say... the coolant fan relay. Also check all fuses to eliminate that. (especially the headlight problem) Next I'd suggest replacing the air filter.

If your car is still having problems idling relating to fuel, I'd suggest a can of SeaFoam from napa or somewhere. If that doesn't fix it, then clean the IAC & throttlebody.