Car Tech forum: Problems with Fuel pump Chevrolet Blazer 1997

A friend had that issue. There were not happy when a good mechanic replaced a gas filter and it was cured.

Bob

I've also have terrible experiences with failing fuel pumps for my 1996 Chevy Blazer. In the last 8 months I've had to return about 4 units back to the part suppliers.

Is it possible that these pumps are defective ab initio from the manufacturers? May be due to long storage periods?

It just cant be a problem with the electrical system or the filter.

Fully ASE certified mechanic

You are probably purchasing an Airtex masters pump I doubt you have found a Delphi but Anyways with the new fuel pump they will supply you with a new wiring harness that will attach to the pump you must replace this, it is the #1 reason for Gm fuel pump failure. Second of all the main reasons why fuel pumps fail is due to incorrect installation , When replacing a fuel pump you MUST replace the fuel pump strainer , clean the tank and drain the old gas DO NOT PUT THE OLD GAS BACK INTO THE TANK , an replace the wiring harness supplied with the new fuel pump. And also replace the fuel filter there are no other reasons why a fuel pump would just fail , if you have any more questions on the proper installation procedures contact the vendor of the fuel pump you purchased they will pretty much tell you the exact same thing I have stated here.

Ok yeah I'll give you that Electrical work can be tricky and quite dangerous at times. And yes do disconnect your negative battery cable while doing this but the fuel pump system does not get power until the key is entered into the ignition. And no you are not going to be getting into a rats nest of wires there are four wires and the new harness wires are the exact same color so if you can match colors then you can pretty much figure it out. Yeah I also would not suggest doing this if you have no automobile knowledge then you should just step away from the vehicle before you cause more damage or hurt yourself.

Most say the Delphi fuel pump is the best because it comes with a one years warranty, This pump will cost you about $275 to $375 I'm replacing mine in my 1997 jimmy right now, I took the fuel pump out today, I will be ordering a fuel pump from E-Bay with a one year warranty for $62 and that is with free shipping, The Delphi pump might be a better pump but it only has a one year warranty for $300 or more, I will take my chances with the $62 E-Bay pump with the same warranty. And if you hold the two pumps up side by side, The only way to tell the Delphi pump from the other pump is to look at the name Delphi on a sticker that is stuck on the pump, Yes I will use the cheap one for sure, And I know of people that has used these pumps and there still going strong after 3 years and one other even longer.

The fuel filter is on the inside frame rail on the driver side right between the front and rear door, This filter cost about $10 to $12 and should be changed every 30000 miles, A old filter adds strain on the fuel pump and will cause the pump to over heat and fail.