Question for a mechanic about my 95 Chevy Suburban's acceleration issue?

[JAY]

Before & since I have cleaned my throttle body, my Suburban sputters when I lightly put my foot on the gas & hesitates at take off.
For instance, when I lightly press the accelerator & creep along at less than 5 mph, my engine chugs along & kind of sputters. It also does this when I am cruising along, any speed, & lightly press the accelerator to maintain my speed.
When I get on the gas more, it roars forward as it should, but there is that little area of pedal that causes this.
What could it be? The gauges all read normal, it starts & runs fine, just does this sputtering thing & hesitation as take off.
I am unsure of the maintenance as I just bought it used with 180k miles. The mileage is supposed to be mostly highway mileage, I guess the owner drove to Canada & back quite frequently to hunt. It is very clean inside & the body is in good condition for being 15 years old. The engine bay is clean as well, but it doesn't have tell tale signs of being washed under the hood either.
I am stuck, possibly bad plugs/wires? Maybe some setting in the throttle body? Best answer gets 5 stars.

Thanks!

 

[boardguy2008]

seems like your PCV valve is faulty or the hose may have a leak
check the vacuum hoses as well
sounds to me that you have a problem on one of the vaccum hoses, a leak somewhere or not getting enough air when you press the gas
i put my money on the PCV valve, just replace it not that expensive
hope this helps
good luck

 

[Patrick]

i had the same problem with my 90 chevy truck, ended up the timing was 15 degrees retarded, ur problem might be that the timing chain is getting loose and that threw ur timing off. i would say thats a good bet or the injectors are partially clogged or the throttle body could use a rebuild.

 

[Micheal C]

My 1997 Chevrolet had a similar problem. My dad decided to change the spark plugs and advance the timing to make up for any slack in the timing chain. He used the spark plugs that were specified for truck. That made an enormous difference. It became very smooth and didn't have any more surging Gas mileage increased slightly and it runs about 100 rpm slower at highways speeds.