Question about 1997 Chevrolet Express
I've replaced the fuel pump and filter twice now, and just recently the engine control module (computer). The thing runs great until it is warmed up, but sometimes it will chug and stall when going down the road. Other times it will not. It does not need a tune up or ignition control module. When it stalls, most times it will not start again and acts like it's not getting fuel. If I let it sit a while, it starts right up. Could this be another bad fuel pump, or maybe a bad pressure regulator? This is driving me crazy, and my wife is all over me to make this thing reliable again. Please help!
Hello, yes the check valve is in the fuel pump assembly. The check valve is leaking and the pump will burn out soon. Unfortunately the aftermarket fuel pumps can be very unreliable. A good portion of problems we see on this site are from people who replace the pump sometimes twice and it still doesn't work.
Posted on Jan 03, 2009
replace your MAP sensor(manifold absolute pressure) the map sensor is the computer for your fuel pressure regulator telling how much pressure. Unless your tahoe runs like **** going up hill than it inevitably your fuel pump
Posted on Feb 17, 2009
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The engine and automatic transmission in this vehicles drive train are fully electronically controlled by a computer called the PCM (Power Train Control Module). Whenever a problem like this occurs the computer stores a record of the problem (there are of course some exceptions to this, like the fuel pump, engine coolant temperature sensor and MAF sensor for instance) in the form of a fault code in its memory, to read these fault codes you must have the systems memory scanned with a special tool. Once the fault code(s) are read you then must perform the appropriate diagnostic testing to find and resolve the problem(s) DO NOT REPLACE ANY PARTS UNTIL A TRAINED TECHNICAIN HAS DIAGNOSED THE PROBLEM TO AVOID SPENDING YOUR HARD EARNED MONEY ON PARTS THAT MAY NOT CORRECT THE PROBLEM
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