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post #1 of 16 Old 02-13-2017, 02:50 PM Thread Starter
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Car stuttering in low speeds

Hi everyone,

My car started stuttering the other day after admittedly driving it a little hard on the highway (had to rush my wife to the airport). The jerking motions are noticable at low speeds - specifically if you maintain the car below 40 Kph but it disappears when accelerating. The check engine light came on for a few hours then was gone by the next day.

Had this problem for about two days now.

My car's an '07 sedan, automatic CVT transmission.

Your assistance will greatly be appreciated.

Thanks

Last edited by ramaswalleh; 02-14-2017 at 03:46 AM.
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post #2 of 16 Old 02-14-2017, 02:13 PM
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Originally Posted by ramaswalleh View Post
Hi everyone,

My car started stuttering the other day after admittedly driving it a little hard on the highway (had to rush my wife to the airport). The jerking motions are noticable at low speeds - specifically if you maintain the car below 40 Kph but it disappears when accelerating. The check engine light came on for a few hours then was gone by the next day.

Had this problem for about two days now.

My car's an '07 sedan, automatic CVT transmission.

Your assistance will greatly be appreciated.

Thanks
You may have picked up some bad gas containing water at your last fill up. You might try some of the fuel enhancement treatments sold at most auto supply stores. Drygas is one that is supposed to remove moisture from gasoline, and has worked for me in the past. I believe that StarTron also makes fuel additives that will remove water. Good luck!!!
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post #3 of 16 Old 02-15-2017, 02:39 AM
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No code? Was the check engine light blinking? Usually a blinking light means a misfire and bad fuel sounds like a good cause. Performance issues are hard to pin down. Could also be a stuck pcv valve or egr.
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post #4 of 16 Old 02-15-2017, 05:49 AM
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If they run ethanol in your fuel there is really zero need for any sort of drygas measure as the ethanol itself performs that function.
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post #5 of 16 Old 02-15-2017, 01:04 PM
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If they run ethanol in your fuel there is really zero need for any sort of drygas measure as the ethanol itself performs that function.
Ethanol myths

MYTH: fuel additives can cure or prevent all issues from ethanol-blended fuel.

TRUTH: there is no practical additive that can prevent phase separation from occurring. The only practical solution is to keep water from accumulating in the tank in the first place. In addition to using high-quality fuel additives, you should purchase quality fuel from trusted sources, check fuel filters and fuel tanks periodically for sediment and water, and keep up with manufacturer-recommended preventative maintenance schedules.

MYTH: Fuel additives can make phase-separated fuel (that has separated into layers of water and low-octane gas) usable.

TRUTH: “Bad” fuel should be completely removed and replaced with fresh fuel. Nothing can rejuvenate old fuel. To prevent fuel from going bad, most manufacturers recommend high-quality fuel additives to prevent sediment, gum and varnish buildup that forms when fuel goes bad, control moisture, help prevent phase separation and prevent fuel system corrosion.
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post #6 of 16 Old 02-16-2017, 12:18 AM
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Well..... I still think bad fuel could be the issue. I ran e85 in a honda insight and when it was below freezing I got a cel for trim out of adjustment. I dont know if nissan makes flex fuel vehicles for other countries or if where the op lives they sell different grades of fuel and ethanol.
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post #7 of 16 Old 03-17-2017, 02:00 PM Thread Starter
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Hi Guys!

Sorry for the delayed response. But it turns out that one of my spark plugs wasn't firing well. So the diagnostic machine read a cylinder misfire.
Switched the coil from the misfiring cylinder just to ensure that it wasn't the culprit too - turned out it was OK so just replaced the set of plugs with Iridium tipped ones.

Car runs fine now.

I suspect the shop I've been taking it for regular service didn't replace the plugs the last time. I suspect a lot of things weren't done that I paid for whenever I took my car there.

Never going back there again.

Anyway, thanks everyone for the input, you've all been much help.

Thanks!
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post #8 of 16 Old 03-17-2017, 03:02 PM
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Quote:
Originally Posted by ramaswalleh View Post
Hi Guys!

Sorry for the delayed response. But it turns out that one of my spark plugs wasn't firing well. So the diagnostic machine read a cylinder misfire.
Switched the coil from the misfiring cylinder just to ensure that it wasn't the culprit too - turned out it was OK so just replaced the set of plugs with Iridium tipped ones.

Car runs fine now.

I suspect the shop I've been taking it for regular service didn't replace the plugs the last time. I suspect a lot of things weren't done that I paid for whenever I took my car there.

Never going back there again.

Anyway, thanks everyone for the input, you've all been much help.

Thanks!
Than you for getting back to us with the answer to your problem. Sometimes we are just left to wonder what the outcome was.
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post #9 of 16 Old 03-17-2017, 09:59 PM
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I would of expected that from Nigeria, not Kenya. Glad you figured it out. Should of been some misfire codes or blinking check engine light. The blinking check engine like is a universal sign in most cars of a misfire.
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post #10 of 16 Old 03-23-2017, 02:08 AM
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I repeat post #4 , that has not changed. The ethanol doing what I said is why the fuel separates, and you CAN use the gasoline portion once phase separated as the ethanol is the bad part then. I pour off the gas portion and use it all day long in the lawn mower and it runs fine. Look at the contents of most gas dryers, they are isopropyl or ethanol alcohol in content.
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