Problem!!!

[zoobamafoo]

I have noticed over time that this problem has gotten worse, and the last couple of weeks i have really been able to notice it. While im driving my 1996 firebird, i have it cruizing at about 40mph while in fourth gear, that puts it at about 1800 rpm's. Now if i give it about a 1/2 throtte my car starts to shake and act like it is misfiring, and then i get a loud backfire out of the rear. I have noticed that in other gears, mainly 3rd though, that it does this too, under a heavier accel.
I have no clue what this could be but it has me worried.

1996 Pontiac firebired
SLP CAI
B&B "Ripper" Shifter

[cassie]

I would post helpful information, but I'm just not like that [img]smile.gif[/img]

[ February 11, 2004: Message edited by: navyblue2000 ]</p>

[Lon]

i had the same problem in my 97. it was bad wires and plugs. put some accel wires and bosch +4's and it took care of the problem.

[navyblue2000]

you definitely need some help in your ignition system...start simple, with plugs/wires