4.8 L Not Running Right

[beetle]

2005 with 4.8 just started with an intermitant miss at idle (real noticable with the A/C on) and slight hesitation when hitting the gas. New iridiums less than 10 K ago, recent air filter, plug wires tight, 78,000 miles. Nothing visable that jumps out at me. What do you think it could be?

[jro909]

any codes or lights on the dic? are the wires new? how many miles?

 

 

vortecs have a rough idle but nothing like a misifre

[beetle]

any codes or lights on the dic? are the wires new? how many miles?

 

 

vortecs have a rough idle but nothing like a misifre

 

 

No codes............Now, I don't know if it's a coincidence or not, but when I gassed up this morning it was running fine, then this afternoon is when I noticed the problem.

[beetle]

any codes or lights on the dic? are the wires new? how many miles?

 

 

vortecs have a rough idle but nothing like a misifre

 

 

No codes............Now, I don't know if it's a coincidence or not, but when I gassed up this morning it was running fine, then this afternoon is when I noticed the problem.

 

 

 

It was the mass air flow sensor..........$$$$$$$$$$$$$$$$.............Bahh!!!!

[jro909]

easy to swap out...unsure of the price tag on the actual part though lol