![]() ![]() Double check and inspect the new pump and gasket and make sure everything is the same. This is so much easier to do when the tank is out.Ħ. Also inspect the various hoses, lines and clamps and replace anything that could cause small leaks. Once the Fuel Pump is out, inspect the inside of the tank for cleanliness. You and/or your mechanic will thank me later.ĥ. If at all possible, if you have a choice, schedule your Fuel Pump replacement when the tank is almost empty. To listen to your fuel pump while it seems to be running good, stand by the Gas Cap Door and have someone turn the key to “ON” without starting the engine and listen to the two second prime cycle for future reference and take note of any change in the sound.Ĥ. Most Fuel Pumps will normally make some noise. If your Fuel Pump starts to whine, howl or emit a loud whistle, you’re on borrowed time. Always replace the Fuel Filter when you replace the Fuel Pump.Ĥ. Too much back pressure kills these pumps. I cannot emphasize this enough! This is what in all likelihood caused my original Fuel Pump to go out. ![]() Always replace the Fuel filter at least once a year. However, if you replace your connector and have to go back to the original GM connector, it may cost you extra for a new connector.ģ. If you have to use a different connector, I recommend that you solder the wires instead of using the connectors that come in the box. Some new Aftermarket pumps have a different wiring harness connector that will require you to cut your old one off and connect their new one on. After 3 pumps I am qualified to make this statement.Ģ. Bite the bullet and do it right the first time. If I had done this, I would have saved over $500 in labor costs. AC-Delco/Delphi OEM pumps are the only way to go, and they are not usually that much more money. Here are a few suggestions, tips, opinions, advice, call it what you want, but hopefully, someone will benefit from this and not make the same mistakes I made.ġ, Never, never, never buy an Aftermarket Fuel pump. If you let the prime cycle finish, it starts normally. The next time you try to start the engine, if you don’t let the Prime Cycle finish the 2 second cycle when you first turn the key, the starter cranks until the system is primed. This brand new Airtex Fuel Pump does not seem to hold pressure once the pump (and Engine) is shut off. Again, The Fuel pump was swapped out with you guessed it, another brand new Airtex Fuel Pump, which has already started to show signs of trouble after 2 days. Luckily, I was in the right hand lane and was able to get out of traffic. It just quit while driving at 40 MPH during rush hour. Knowing I was on borrowed time, I drove the truck until Thursday to try to drain as much of the fuel out as possible, when it finally left me stranded in the middle of the interstate. I replaced the Fuel Filter again, even though it was also only 6 months old, but it didn’t help, the noise was very loud and could be heard during the 2 second prime cycle when nothing else was running, not to mention you could hear it while the engine was running. All seemed well until last week Monday, when this 6 month old Airtex pump started making a terrific howling, whining noise. We got a free Airtex Fuel Pump from the Auto Parts store and swapped out the Fuel Pump and filter. Once the pump was out of the tank, we found that the Crimp style clamp holding the Flex hose onto the actual pump (inside of the Pump assembly, inside of the tank) was loose and probably leaking fuel and pressure back into the tank. Since the Pump was under warranty, my mechanic and I decided to R&R this pump before it left me stranded. It originally fired on the turn of the key, but progressively got to the point where the starter had to turn the engine over for 5-10 seconds before it would finally fire. Within 7 months, in April of 2008, I noticed the truck was getting harder and harder to start. I had the Fuel Pump replaced (long story) with a brand new Airtex brand aftermarket Fuel Pump and filter. 2007, the original Fuel Pump in my 2000 4.3L 4dr, 2wd, Jimmy went out. ![]()
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