2002 Suburban 5.3 4x4 flex fuel
#1
CF Beginner
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Don't know what else to do, does fine at low speed but hit the gas pedal and it will choke and shut down..... Sometimes even backfire " louder than a 12 gauge !
any suggestions ! Done fuel filter, plugs and wires ... Ahh replaced 2 ignition coils " Advance Auto code said ??? Cleaned the Mass Air Flow ... New air filter.. checked for vacuum leaks .. replaced O- rings on 2 injectors.. IT'S WHAT I CAN DO WITH THE MONEY I HAVE !!! Love the burbank hopefully it's something small I'm missing !!!? Thank You to anyone that can help !!
any suggestions ! Done fuel filter, plugs and wires ... Ahh replaced 2 ignition coils " Advance Auto code said ??? Cleaned the Mass Air Flow ... New air filter.. checked for vacuum leaks .. replaced O- rings on 2 injectors.. IT'S WHAT I CAN DO WITH THE MONEY I HAVE !!! Love the burbank hopefully it's something small I'm missing !!!? Thank You to anyone that can help !!
Last edited by J.c. Forbes; November 25th, 2020 at 2:22 AM.
#2
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You need your own quality code reader, one that reads all 4 code families. It's the most important tool and the first tool to use on today's vehicles. Part store ''experts'' can not be relied on for scanning your truck. There are hundreds of codes, until all have been read and ''decoded'' every thing is just a guess.
Today's technician is not only a mechanic but also a detective.
Today's technician is not only a mechanic but also a detective.
#3
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Basics first. get fuel pressure readings at idle and accel and while driving. Get a gauge that has long enough extension that allows for the gauge to be taped to w/s or get a Tech 2 that allows you to monitor pressure while driving.
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Sandman22699
Silverado, Sierra & Fullsize Pick-ups
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February 24th, 2014 1:01 AM