hey iv done some research and iv see similar problems but not exactly like mine.

at start up with the motor warm or cold i get a rough idle for a few seconds and then it gos away plus the car kinda miss fires some time not all the time this problem happened from one second to the other. im pumping 93 oct, i put the heet bottle thinking it was water in the tank, i put the lucas injector cleaner. i don't know what else to do i have no warranty so no dealer suggestions. plus while driving normal no problem . while in hard driving the motor stalls out like if the car had no power or as if my tranny was slipping and also get some back fire. i just changed the spark plugs bout 2 to 3 weeks ago put in some ngk v power...

please help

 

any one??

 

any suggestions?

 

i just cleaned the maff and the tb and did a computer reset and nothing ...also changed the pcv n nothing i do hear a air leak somewhere around the the pcv i was thinking bout just going ahead n putting a plenum spacer and new gaskets but did wanna waist the money for no reason..

any info is good please help

 

Any modifications?

If you hear an air leak then get yourself a short length of garden hose and use it to locate the source of the leak.

 

i have intake gutted cats and exhaust fro the y back the leak i her was the air gose threw the pcv valve

 

I would check your plugs. While you just changed them you may have one that has a crack in the insulator or is dirty.

 

imma get to that tomorrow thanx man

 

did this problem just start...shortly after you changed your spark plugs? Not sure that you want to use the V-power spark plugs...might change the resistance of the stock plugs.

 

just checked the plugs n the gap all were fine..

 

yea the problem started 3 weeks after the plugs change.

checked them today and they were fine the car starts a lil better but its still stalling at hard driving tho and the roughness at idle is a lil better. still rough???

i had got those plugs cuz they didn't have ridium at the auto parts that day i went and that was the day that i had the chance to do the plugs change.

 

what is your idle at?

 

idle is at the second line after the zero first small line which im guessing is 600 rpm. that's on neutral and drive both the same.

 

not sure if our gauges are the same...but it sounds like you are idling at 600 rpms. That is very low. You should be at ~700. at about 650 rpms the engine will start to get rough and vibrate...lower and you get the shakes.

It sounds like you have a vacuum leak. Do you have any intake mods?

 

yea i remember the idle being a lil higher then wat it is right now only thing i have is the intake and the hole one the intake for the nitrous but the jets are there and there are no leaks on the intake iv taken it apart like 4 times this week