I dont kow i just changed out the MAF to see if that would solve the problem it didnt, its so intermitant I dont really know what it could be, and im not getting a cel.. just every once in a while for no reason when i hit the gas usually on the highway, it feels like its coking, like its either not getting enough fuel or there is no spark, kind of like when you hit the gas on a older car with a carborator and its not quit warm yet on a cold day and it stumbles a bit. Maybe its an injector or a bad coil pack.. I dont know.. anyones imput would be great..

 

Hey man , My car does the same exact thing sometimes. Its usually when I first pull off with the car , like in the morning or after letting it sit. It does exactly the way you described. I have no idea and Mine usually goes away after the first few minutes.

 

its screwed up, I have only had it happen to me on the highway, but its so odd, and i dont even know where to begin. If there was a way to check the injectors and the coil packs i would, but i just dont know of any..

 

Check for codes.

 

if you read through the post i have, I said no cell, but I check every day in hopes that there is somthing, I had a misfire code a few months back but thats it and the problem was not thier then, once in a while i will get an o2 sensor code becasue i have a test pipe but i never get a check light for that.

 

I sent you a PM. Im thinking it may be a bad 02 sensor. When they get old they get lazy and it may not be able to keep up with the necessary adjustments for correct A/F ratio's when you go from light throtle to heavy throtle or wot like you are explaining how when you all of a sudden get on it on the freeway. If you have the original 02 sensor and have over 90k miles it would be a good idea to replace it anyway. Its not a part that works perfect and then just dies. A bad maf and bad 02 sensor can have similar symtoms when they are going bad so maybe both were on their way out and youve only fixed half the problem. If it was a fuel pump/fuel delivery problem i would think that your problems would be more constant than random. Im pretty sure ECS has the best price for your 02 sensor, but check out purems.com too.

 

I replaced my primary o2 sensor about a month ago, the secondary one is original so i dont think its the 02 sensor becasue I thought the primary one determined A/F ratio.. but i might be wrong..

 

No you are right, the 2nd 02 sensor just monitors things and isnt responsible for A/F.
Sent you another PM.

 

i sent you another pm but im totally at a loss here, dont really know where to begin.. i would bring it somewhere to have a second opinion but its so dam intermitant. let my friend drive it for the day and he didnt even feel anything.. so gay..

 

I was also thinking O2 but maybe a pluged cat.....