Hi guys whats up?I have a 2000 blazer 4wd 4.3 and when I floor this truck from a dead stop it stumbles and has trouble gettin up to speed.If I go into it slowly the truck rips and has tons of power!It seems like the fuel is not there or the fuel pressure is not right!I have done a TUNEUP but the truck does have some miles on it but does not LEAK,BURN or use any oil.It always fires right up and seems very heathly internally.What do you guys think could be causing my problem here?

 

try running some high octane fuel?

 

it could be the tranny slipping under all of the torque

 

Its fixed it was the Mass Airflow sensor.This thing will smoke the tires now guys!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!! !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!

 

Did you replace the maf sensor or just clean it?

 

Glad you got it Fixed!!!

 

How were you able to tell? CEL or visual inspection? I'd like to know how to tell when they get bad because I'm having a problem not totally unlike that...

Thanks!

Regards,

Thomas

 

I unplugged it and noticed an immediate response.

 

Thanks! I'll try that on mine as soon as I get the exhaust back together.

Regards,

Thomas

 

Wait, you unplugged your MAF sensor, ran the engine and actually took it for a test drive? Is it still unplugged?