Man my idle was dropping to around 400 to 500 at times, and i knew i was do on the plugs since the owner before even changed them. Now it runs like a charm.

 

would faulty plugs lead to rpm's dropping off even though the gas is depressed more and more? This is more of a general question b/c no one on the grand am boards could help me. Say I am driving at about 40mph..i press the gas slightly and if i don't keep depressing the gas pedal more and more, then the rpm's drop off about 500rpms+ and then get stuck. By getting stuck, i mean that i can depress the gas pedal more and the cars sounds to be struggling and finally a second or two later will increase rpms and get unstuck. Anyone know if plugs could be the problem or what might be?? My car only has 38,200mi on it. Maybe b/c it's a GM

 

Do you have an auto tranny?

 

looks like you're running a little lean. do you have an ECU???

 

Can you take a close up shot of the one plug on the far right? It might be my imagination, but it looks eaten away like mine.

 

yea..i do have an auto(if that question was addressed to me) Also, i do have an intake on my lil 2.4 that remains in the engine bay. Even though i made a cold air extension for it, i still had these problems. Any clues?

 

To me it looks like you had 3-9s and 1-7 in there or is the one just totally fried?

 

no he's got 2 9's and 2 7's....take a look at the tops of them....blue strips

 

yes they were 9's and 7's and the tips were a brownish color and the Trailing had a tad black, runs so much better and quicker throttle response too!