cwdub4

iTrader: (3)

I have a 99 camaro SS it has 70K on it and a 6spd, everytime im crusing down the street and give it some gas to go faster the car stutters, like kinda chokes!! this usually happens around 2000-2500 rpm... changed the fuel filter and nothing worked can anyone help me please???

KevinR

Have you checked your fuel pressure?

cwdub4

iTrader: (3)

^ No i haven't how would I go about doing that if you can explain i would appreciate it!

garygnu

check for a loose or bad plug,check the wires also.clean the MAF with the proper cleaner,and clean the injectors.check the MAP sensor ,make sure its not loose.any codes?

KevinR

Gotta get a pressure gauge, if you don't have one. On the fuel rail (drivers side) there is a shrader valve that will just unscrew. Hook up the gauge and turn the key to the on position to make sure it's holding pressure. Start her up and make sure you have 58 psi

cwdub4

iTrader: (3)

Ok so when you guys say if its throwing any codes do you mean on the dash? cuz there is nothing coming up on there, and I have to go get a gauge, do you know how much it usually cost? and im also going to change the TPS also so hopefully that will help, thanks guys!!

KevinR

Yes, you would probably see your SES light on if it were throwing a code. I could be a little off, but I think a gauge is around 30 bucks?? Someone correct me if I'm off.

cwdub4

iTrader: (3)

^ koo thanx bro i appreciate it!

omarrakeen

iTrader: (2)

as long as you said "when u want to go fast" its the spark i believe i would first of all change my spark plugs wires 70K is a good time to change them. does it do the same thing at light throttle or idle? am kinda sure its you wires. good luck.

Cold06

iTrader: (9)

More than likely is your fuel pump if its not throwing codes check that first then it could be a vacuum leak... luk

cwdub4

iTrader: (3)

Light throttle when driving yes, but nothing at idle! so do you still think its the wires?

cwdub4

iTrader: (3)

ok so I changed the TPS and didnt fix it, checked the fuel pressure and it read 70 psi and the guy said that was ok, and i jus bought some Autolite XP5245 Iridium spark plugs and gonna install them 2morrow so I hope that fixes it!

Cold06

iTrader: (9)

what about wot? with that psi it could be dumping to much fuel! Has this happen on my 00 z71

cwdub4

iTrader: (3)

nobb question but what is WOT?

need4fun2469

wide open throttle

cwdub4

iTrader: (3)

^oh ight, lol but naw it doesnt do that wen i get on it, jus wen im cruzing and jus give it gas thats it

need4fun2469

sounds like an o2 sensor, imo

omarrakeen

iTrader: (2)

^ O2 sensors will not cause this huge amount of misfiring and it will definitely set the SES light on. eve if it cause a misfire it would mostly be on top end rpm.

cwdub4

iTrader: (3)

well guys everything got fixed!! i just installed my new plugs the Autolite XP Iridium ones and everything worked good! oh and get this when i was changing them out, the very last one you know the hardest one to get to. Well aparently the previous owner never chaged that bitch out AND left the stock spark plug wire on also!!! while every other one was a MSD wire!!! dumbass, and they were dirty, and one was cracked, and sum of the gapping on them were VERY VERY wrong... BUt just want to say thanx guys for your help and advice

need4fun2469

i had the same symptoms and it was a 02 sensor. It will not show at wot but at the slower cruising speeds. I changed them out and it fixed the problem.

I'm glad you found the problem.