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hesitation when accelerating

 
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Old 22 May 2017, 04:44 pm
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Default hesitation when accelerating

Hello everyone, my name is Mike and I am new to this site. I have read some arricles here before that have helped, but now I am at a loss. I have a 2005 PT Cruiser GT with 99,000 miles. About 3 months ago I had a cylinder misfire code and replaced the coil pack and plugs. Has been running good until the last 2 weeks. I have a hesitation when I accelerate in the 3500 to 4000 rpm range. Also at idle when i step on the gas it will hesitate. When stopped at a light it will chug intermittantly and lurch forward a little. So far I have replaced the crankshaft position sensor and the cam position sensor. The chugging when at a stop seems to have stopped but the acceleration problem remains. Any suggestions would be greatly appreciated.
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Old 22 May 2017, 11:51 pm
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Default Re: hesitation when accelerating

100k miles should be the time period to remove and clean the injectors. i wonder if that's the problem. i'd look into it. or, there's a problem in the path to current for the coil driving circuits, like a high resistance. do you use 91 octane or higher fuel ?
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Old 23 May 2017, 07:05 pm
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Default Re: hesitation when accelerating

I have used 91 octane since I bought the car a couple years ago. I am learning as I go, so how difficult of a task is it to remove and clean the injectors? Thanks for the suggestions!
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Old 24 May 2017, 07:43 am
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Default Re: hesitation when accelerating

Before pulling the injector, why not go to Walmart and grab a bottle of Techron Fuel Injector Cleaner? I've been using it for years and have never had a fuel injector problem. One bottle about every 10,000 miles has worked just fine for me.
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Old 24 May 2017, 04:21 pm
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Default Re: hesitation when accelerating

Quote:
Originally Posted by chuzz View Post
Before pulling the injector, why not go to Walmart and grab a bottle of Techron Fuel Injector Cleaner? I've been using it for years and have never had a fuel injector problem. One bottle about every 10,000 miles has worked just fine for me.
I've been using it 5 years. No problems either.
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Old 24 May 2017, 04:23 pm
Fk5 Fk5 is offline
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Default Re: hesitation when accelerating

FWIW, I haven't been using Techron for years. I haven't had any injector problems either.
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Old 24 May 2017, 07:13 pm
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Default Re: hesitation when accelerating

Thank you all for the advice. I will give it a shot.
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