Hesitation/stutter when hitting gas hard

Tiny
NEIL2002CIVIC
  • MEMBER
  • 2010 HONDA ACCORD
  • 2.4L
  • 4 CYL
  • 2WD
  • AUTOMATIC
  • 40,400 MILES
Hi my car has a hesitation/stutter when hitting gas hard e x: pulling out into traffic or going to pass someone. It doesn't happen all the time, the only way I can describe it is when you mass the gas on a carburetor and it hesitates and takes off There is no smooth transition of power. Sometimes it has a minor stutter almost like a miss then I throttle up a little and it goes away. I did change the plugs OEM correct PZEV motor California emissions car. No check engine light. The car was my dad since new. Well serviced. Not to over think this a while back I asked about cleaning the throttle body and did not because of the electronic TPS and a possible relearn. I thought maybe some carbon build up on the throttle plate slowing down the reaction time. Possible? Yes/No? If you think this is maybe my problem I read in a Honda forum, you can turn the key on and have a helper push on the gas to open the Throttle Body plate and opening to see if it's dirty and clean it with a cleaner sprayed on a rag I know not to spray the TPS. Can this be done without throwing a code or having to do a tps/idle relearn? Thanks ahead of time for your help. Have a great day! Neil aka confused lol
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Thursday, July 25th, 2019 AT 2:32 PM

9 Replies

Tiny
SCGRANTURISMO
  • EXPERT
Hello,

Yes, a dirty throttle body and throttle will cause the Throttle Position Sensor (TPS) to get a dirty signal and cause a problem like this. But before I give you the link for how to do this procedure, have you considered that a failing fuel filter would also cause a problem like this. In the diagrams down below I have included the instructions for the removal and installation of your vehicle's fuel filter. Here is the link for you to go to for the throttle body cleaning:

https://www.2carpros.com/articles/throttle-actuator-service

Please go through these guides and get back to us with what you are able to find out.

Thanks,
Alex
2CarPros
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Thursday, July 25th, 2019 AT 4:21 PM
Tiny
NEIL2002CIVIC
  • MEMBER
Hi Alex thanks for the quick response. I hadn't thought of a fuel filter problem. Before I go through taking out the back seat and checking it etc. I have seen the relearn procedure I thought I read you have to reset the computer after removing the throttle body then do the relearn and also it's a dealer only thing or someone with a high end scanner. I was a tech for 20+ years and recently had major back surgery so taking the back seat out etc is not happening now (can't do it) and money is tight (old story) When I have someone turn the key on an push down the throttle and see if it's dirty. Does that screw up anything? Is it alright to spray cleaner on a rag and clean the throttle bore and plate without a problem with a reset/relearn? I know a lot of questions. Sorry. Thanks for your help! Neil
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Thursday, July 25th, 2019 AT 5:48 PM
Tiny
SCGRANTURISMO
  • EXPERT
Hello again,

In the diagrams down below I have included some more tests for the trhrottle body system. I have an emergency and have to run but I will complete when I get back.

Thanks,
Alex
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Friday, July 26th, 2019 AT 4:16 PM
Tiny
NEIL2002CIVIC
  • MEMBER
Okay thanks Alex I reviewed them. Before I try anything and I have someone turn the key on and push down the throttle and see if it's dirty. Does that mess up anything? Is it alright to spray cleaner on a rag and clean the throttle bore and plate without a problem with a reset/relearn like stated in the first link you sent me? I hope everything is okay with what ever was wrong. Have a good night. TTYS
Neil
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Friday, July 26th, 2019 AT 6:33 PM
Tiny
SCGRANTURISMO
  • EXPERT
Hello again,

Sorry, I had to make to a business before 5 P.M, being it's Friday and all. Here are the rest of the tests. Yes you can clean the throttle plate and throttle body, but I wouldn't use anything like brake or carb cleaner. It's much to harsh, and be very carefull of your Throttle Position Sensor(TPS) and other electronics that may be damaged. You might want to run these tests first and track down the exact problem first.

Thanks,
Alex
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Friday, July 26th, 2019 AT 7:17 PM
Tiny
SCGRANTURISMO
  • EXPERT
Hello again,

Sorry about this, but here are the rest of the diagnostic tests.

Thanks,
Alex
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Friday, July 26th, 2019 AT 8:01 PM
Tiny
NEIL2002CIVIC
  • MEMBER
Thanks, I will do as needed and try to narrow it down I have the correct throttle body cleaner I will see how dirty it is and if it can be cleaned and if it's not too bad. I doubt would be my problem I will clean it and drive it and see if it's that. Fingers crossed you never know If it's that bad I will remove and clean as described.
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Friday, July 26th, 2019 AT 8:58 PM
Tiny
NEIL2002CIVIC
  • MEMBER
Thanks I will do as needed and try to narrow it down I have the correct throttle body cleaner 'ill see how dirty it is and if it can be cleaned and if it's not to bad I doubt would be my problem I will clean it and drive it and see if it's that. Fingers crossed you never know If it's that bad I will remove and clean as described
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Friday, July 26th, 2019 AT 8:58 PM
Tiny
SCGRANTURISMO
  • EXPERT
Hello again,

Usually what happens with the throttle body/throttle plate when it gets really dirty is the Throttle Position Sensor (TPS) will start getting a skewed signal and the Power-train Control Module (PCM) or "computer" will get confused and throw the vehicle into "limp mode", which will only let the vehicle operate in a diminished capacity, just to make it to a shop and get it fixed. You would know if your vehicle was in limp mode. Keep us updated, and if it isn't the problem, we'll keep cracking at it until we get it fixed.

Thanks,
Alex
2CarPros
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Saturday, July 27th, 2019 AT 12:38 AM

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