When im driving and i hit like 4500-5000 rpms if im accelerating even half way fast it likes hesitates and jerks like it doesnt wana give power then if i shift it stops but i cant really go past 4500-5000 without being scared something gonna go wrong, ive heard it could be a clogged cat, timing, and idk what else. so if anyone has an idea of which i should check would be greatly appreciated.

Tony

 

Turbo/non-turbo? What mods do you have?

 

His sig says TII, 87. Have an exhaust leak anywhere or anything? Are you overboosting and hitting fuel cut??

I don't know much about turbos, but that's my guesses, someone else will probably be able to help a bit more. Search while you wait for responses, something helpful might turn up.

Good luck!

 

what boost is it at when it starts having this heistation?

 

sup ben, umm im not sure i think like 8, tommorow im goign to try pass smog, so soon we can trade stuff back. and tommorow morning eric is gonna take a look at my cat converter and make sure its not clogged and hes gonna check if everythings hooked up.

Tony

 

fuel cut begins at 8.6psi so more than likely it is what is happening, keep your foot off the throttle until you install a fuel cut defenser, Rtek chip or standalone or you may need a new motor in the near future.

 

but couldnt i before boost at like 10...lol :s

 

My car had badd hesitation, so bad it was like hitting a wall around 4000rpm - sometimes lower... turned out to be hella carbonation in the exhaust.

 

hmm well tommorow im bringing to muffler shop and there gonna check a few things for me would they be able to check for the carbonation??? and ya hope i pass smog tommorow!!

Tony

 

My non turbo has a lil hesitation between 3500 and 4000, but goes away as soon as i pass 4000, and continues to pull.

 

check your plugs

 

i just changed my spark plugs

 

have you tried sanding the ground wire that links to the firewall with 220 sandpaper?
I sanded a part of the firewall and the metal and bolt that hold the wire to the firewall and that got rid of a lot of hesitation for me.