rough running

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Jun 28, 2006 | 12:29 AM

hawd01

Thread Starter

Joined: Jun 2006

Posts: 1

From:

hawd01 is an unknown quantity at this point

rough running

HI, I HAVE A 1997 4DR 4X4 BLAZER. I PURCHASED IT IN 2001. UNTIL THIS YEAR I HAVEN'T HAD ANY MECHANICAL PROBLEMS. EARLIER THIS YEAR AROUND JANUARY MY FUEL PUMP WENT OUT. OF COURSE YOU KNOW IT NEVER HAPPENS AT HOME. I REPLACED THE FUEL PUMP AND FILTER AND THE VEHICLE HAD BEEN RUNNING GREAT. ABOUT 3 WEEKS AGO IT STATRTED RUNNING REALLY ROUGH. I TUNED IT UP LAST WEEK INCLUDING ALL THE OXYGEN SENSORS @ $52 BUCKS X 3. BUT IT STILL RUNS ROUGH. I AM AT A LOST WHERE TO GO NEXT DOES ANYONE HAVE A IDEA ABOUT WHAT IS HAPPENING. THANKS, HAWD01

Jun 28, 2006 | 01:27 AM

1996BZR

Joined: Mar 2006

Posts: 416

From:

1996BZR is an unknown quantity at this point

RE: rough running

maybe clogged injectors

Jun 28, 2006 | 11:51 AM

DINO55

Joined: Mar 2006

Posts: 142

From:

DINO55 is an unknown quantity at this point

RE: rough running

Quote:

ORIGINAL: hawd01

HI, I HAVE A 1997 4DR 4X4 BLAZER. I PURCHASED IT IN 2001. UNTIL THIS YEAR I HAVEN'T HAD ANY MECHANICAL PROBLEMS. EARLIER THIS YEAR AROUND JANUARY MY FUEL PUMP WENT OUT. OF COURSE YOU KNOW IT NEVER HAPPENS AT HOME. I REPLACED THE FUEL PUMP AND FILTER AND THE VEHICLE HAD BEEN RUNNING GREAT. ABOUT 3 WEEKS AGO IT STATRTED RUNNING REALLY ROUGH. I TUNED IT UP LAST WEEK INCLUDING ALL THE OXYGEN SENSORS @ $52 BUCKS X 3. BUT IT STILL RUNS ROUGH. I AM AT A LOST WHERE TO GO NEXT DOES ANYONE HAVE A IDEA ABOUT WHAT IS HAPPENING. THANKS, HAWD01

What all was included in your tune up besides new 02 sensors?
Is the SERVICE ENGINE SOON light on?
Did you clean the EGR?
Did you clean the MAF?