car was running great now every time i give it full gas the car hesistates and then takes off. happens at any gear just when i give it 100% throttle

 

That same crap happens to me now....
Is it something serious.?

 

not sure mine was fine gutted my car about an hour ago now this what the hell

 

ditto.

 

son-of-a-bitch....
Where's the people who knows what's going on here?
I mean, the car runs okay...but that hesitaion is just depressing.

 

check your aux ports...if that's not it I'm guessing plugged pre-cat

 

Once again let me make it clear I'm a noob....
I checked the cat and everything but...and don't think less of me for asking this but what are aux ports and where can I find them.

 

hmm ok
few ?'s
could it be my fuel filter
wheres the aux ports
plugged precat ran fine yesterday
is it because i gutted my other cat, like i said ran fine then i decided to gut my cat underthe car so i did that took it for a spin and what car hesitates at full throttle for a couple of seconds then goes and then when i shift wam does it again even if i rev the car up then give it full throttle it does it

 

OR!!!
Could it be that my secondary injector's or that .....I know I don't know too much of what I'm talking about....but those injectors or whatever opens up once you hit like 4000, could those just be hesitating for some reason?!?!?!?!

 

well it even does it at low rpm's before 4 like at idle then i nail the gas and it studders

 

good....point...but mine does it when those secondary's should open up, I THINK...

 

i have a turbo II and mine does it. i don't have cats or aux ports. any ideas?

 

crap.....that's just making this more complicated.
Where's all the pro's at?

 

i just thought it was something like the ecu was adding more fuel than was needed because it took a second for the air to get through the intercooler but i never actually 100% believed that, i guess if someone chimes in we'll know for sure.
peace

 

air filter, fuel filter, dirty sock, dirty injectors, tps, malfunctioning (6PI) or VDI, incorrect ignition timing, plugged exhaust system, defective ACV or water thermo sensor, defective waste gate valve(turbo), defective air flow meter, intake air temp sensor and the list goes on....

 

check TPS first. Auxilary ports and injectors are not going to necessarily affect throttle response as much as produce a dead spot in your powerband.

 

TPS...can you explain please....

 

Throttle Position Sensor

http://www.fc3spro.com/TECH/HOWTO/TPS/tps.html

 

I have no clue what's causing it but it sounds like some kind of throttle or airflow sensor. The O2 sensor adds fuel whenever too much O2 hits the exhaust. The delay you feel is waiting for the extra air to reach your exhaust (and the O2 sensor). For quicker response the ECU guestimates how much fuel to add based on airflow, throttle, etc.... unless one of the sensors that measure these is bad. I'm guessing you also get some popping from extra fuel when you let off the throttle, due to the same kind of lag.

+1 TPS.

 

ok i will check tps tomorrow afternoon man this is irratating like i said i drove the car home today then i was like ok time to gut the cat lol. so i did that and now this

 

Mine just stopped doing it....
could the tpd be loose or moving around in a manner?

 

man must be nice i cant figure mine out I'm going to get some gas and injector cleaner in the car in the morning cant drive the damn car the axle boot just got all twisted the axle was just put on last week I'm not paying for this one lol

 

Injector cleaner isn't worth the money....
I run 91 octane in my car and nothing but. That's the only way I know of to regularly keep your injectors clean...and it breaks up carbon composites.
That's the only type I get.
nothing lower.

 

My car loves 91...
I love her that she loves 91....

 

check the engine grounds...mine was having some serious problems and it turned out my grounds were bad so my engine was hesitating and not mixing air/fuel properly because some of the wiring on my harness was bad and messed with the injectors