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wierd hesistation at engine load

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Old Dec 25, 2007 | 09:25 PM
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wierd hesistation at engine load

Mods are dp,kn intake with cheap bastard mod,blitz cat back, greddy main pulley, petit ast, hks blow off valve and everything else is stock.

right now it seems as the secondary boost actuator is out but i seem to be getting a major hesitation past 3000 rpms. (NOT NORMAL 3K hes.) its more like 4300 rpm or something. but its like the sort that will push your forward in your seat. i get weird back firing that i never got before also.
i recently cleared all the check engine lights and short of the o2 sensor ground that goes after the cat, Ive fixed everything. no check engine lights lately and I've adjusted the tps 4000 miles ago. wondering what my problem could be.

doesnt look to be boost related. seems to be ignition or gas related. but spark plugs were just replaced yesterday >10 miles ago and fuel injectors were cleaned 10k ago.

thanks for any one whose reading this

Last edited by pinkrx7; Dec 25, 2007 at 09:53 PM.
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Old Dec 25, 2007 | 09:39 PM
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could it be something as simple as the double throttle? do you still have the butterflys and the actuator?
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Old Dec 25, 2007 | 09:42 PM
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nope took em out. =] forgot to add that i have no smog stuff.
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Old Dec 26, 2007 | 07:35 PM
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did you solve your problem yet, i noticed no bump??

if not, check your plugs again. make sure there all where they should be and check for any kind of residue developing on the plugs. and are you running stock spark plugs?
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Old Dec 26, 2007 | 08:24 PM
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yeah i dont bump usually. i guess its anoying to see someone bump their thread. anyway havent figured it out yet... yea im running the stock plug configuration. theres no residue on my plugs but some black crap on the outside porclean part, but i think its super heated dirtgrease from when i installed it with dirty hands.. im gonna order plug wires and fc leading coils with fc1000 and see how that goes..

BTW
i just did water cleaning and i had to raise my idle 150ish rpm is that normal?
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Old Dec 27, 2007 | 01:23 PM
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seems like either poking at the tps wires and sensor or water cleaning fixed it..
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Old Dec 27, 2007 | 05:44 PM
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well thats good to here, glad it all worked out
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Old Dec 28, 2007 | 01:07 PM
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quick question. as i was doing the water cleaning, I saw water dripping from the dp and turbos thats normal right?
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