Stutter on acceleration

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Jan 9, 2019 | 04:30 PM

CurpzGreen

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Joined: Jan 2019

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From: Florida

Stutter on acceleration

I picked up a 2002 is300 for $1500 it needs a lot of tlc.
i replaced cool packs and spark plugs also installed a new fuel filter. But it still is having a stutter issue. It only stutters from low rpm to about 4-5k then it runs perfect. I can’t figure it out and would love some advice. ( also I checked the injectors and everything seems to be working fine)

Jan 22, 2019 | 06:18 PM

SteadyMobb

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Joined: Sep 2018

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From: Washington

Have you cleaned your maf sensor?

Jan 23, 2019 | 05:34 AM

CurpzGreen

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Joined: Jan 2019

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From: Florida

Quote:

Originally Posted by SteadyMobb

Have you cleaned your maf sensor?

I bought a new one.

Jan 23, 2019 | 05:35 AM

CurpzGreen

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From: Florida

Quote:

Originally Posted by CurpzGreen

I bought a new one.

still studdering it’s only on low rpm man. High rpm it runs great like over 5k there’s no studdering I can mash the pedal whenever.

Aug 29, 2019 | 01:40 PM

Stuis01

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Joined: Jul 2019

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From: California

Clean throttle body
Make throttle cable tighter
Check all fluids
Fix leaks

Aug 31, 2019 | 10:07 PM

zKabi

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Joined: Feb 2019

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From: NC

Quote:

Originally Posted by CurpzGreen

still studdering it’s only on low rpm man. High rpm it runs great like over 5k there’s no studdering I can mash the pedal whenever.

I had this same issue a few months ago. Eventually it started backfiring throwing codes, P0301 and later P0300. I replaced the valve cover gasket, intake plenum gasket, spark plugs, ignition coils, and spark plug wires. All OEM quality. Car ran great there after.