97altima

97 altima has real bad hesitation issue from take off..if you stomp the pedal car just sits and bogs bad, but if you press pedal very lightly it will start to roll then pick up speed and drive fairly normal with good power and shifts once moving fast enough .. i have replaced the TPS and MAF sensors , also seafoamed and cleaned throttle body and egr .. i replaced cracked stock rubber intake with short cold air intake, cleaned plugs and inspected wires..the hesitation problem seems a little worse with fan motor/ac on ? .. there is no check engine light on .. any help or suggestions would be appreciated i cant figure it out. thank you

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97altima

when car is running in park and you rev engine from idle it revs fine right up to redline..but if you peg pedal when rpms are between 1000 and 2000 it gets stuck and will rev up and down continually between 1200 and 1700 with pedal held down to floor back and forth..if you let off and go under 2000 rpm will rev fine up to redline the same if you rev 2000 rpm and above eng will redline .. so when mashed to floor when the rpms are between 1000 and 2000 eng just revs up and down 500rpm non stop up and down.

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911madness

could be a injector or iac is cloggged. and they are a ----- to get to

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nissanbear71

I kinda had the same problem. It would hesitate off the line. I replaced the plugs with a little better quality and I used a fuel system cleaner. That fixed my problem. So I guess try a fuel system cleaner?

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