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Someone HELP!!! please....

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Old Dec 30, 2010 | 06:23 PM
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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???
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Old Dec 30, 2010 | 06:31 PM
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Have you checked your fuel pressure?
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Old Dec 30, 2010 | 06:32 PM
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^ No i haven't how would I go about doing that if you can explain i would appreciate it!
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Old Dec 30, 2010 | 06:34 PM
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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?
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Old Dec 30, 2010 | 06:37 PM
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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
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Old Dec 30, 2010 | 06:44 PM
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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!!
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Old Dec 30, 2010 | 06:48 PM
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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.
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Old Dec 30, 2010 | 06:51 PM
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^ koo thanx bro i appreciate it!
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Old Dec 31, 2010 | 05:06 AM
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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.
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Old Dec 31, 2010 | 05:31 AM
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More than likely is your fuel pump if its not throwing codes check that first then it could be a vacuum leak... luk
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Old Dec 31, 2010 | 10:08 AM
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Light throttle when driving yes, but nothing at idle! so do you still think its the wires?
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Old Dec 31, 2010 | 02:45 PM
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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!


Originally Posted by 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
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Old Dec 31, 2010 | 04:35 PM
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what about wot? with that psi it could be dumping to much fuel! Has this happen on my 00 z71
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Old Dec 31, 2010 | 05:06 PM
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nobb question but what is WOT?

Originally Posted by Cold06
what about wot? with that psi it could be dumping to much fuel! Has this happen on my 00 z71
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Old Dec 31, 2010 | 05:38 PM
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wide open throttle
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Old Dec 31, 2010 | 08:14 PM
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^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
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Old Jan 1, 2011 | 02:34 PM
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sounds like an o2 sensor, imo
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Old Jan 1, 2011 | 04:10 PM
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^ 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.
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Old Jan 1, 2011 | 04:36 PM
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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
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Old Jan 2, 2011 | 01:02 PM
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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.
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