2001 Hyundai Accent Sputtering on Start

Tiny
LTTLDUDE9
  • MEMBER
  • 2001 HYUNDAI ACCENT
2001 Hyundai Accent Two Wheel Drive Manual 90000 miles

Hello,
Thanks for taking time to help me out, I really appreciate your generosity. I have a manual 2001 Hyundai Accent, and when I haven't driven my car for about 12+ hours, and I start it, the car turns on and the engine starts. When I apply the gas pedal the car sputters, or it doesn't even go (almost feels like when you let the clutch up without giving it any gas, the car kind of jumps forward a bit ). When it's not sputtering, it stays in idol even as I push down the gas pedal. This will go on for a couple minutes, and every so often the car will lurch forward as if it's getting gas, but this is only brief and then it goes back to idol/sputtering. After a few minutes of this sputtering, giving it gas, and sometimes having the car turn off completely(stall out), the car will start getting more gas and picking up speed. Once the car starts running, its fine, and drives with no issues. I can even stop and turn off the car, come back an hour later, and it starts perfectly. It's only when it hasn't ran for a 12+ hours. What could be the issue? Any help is greatly appreciated thanks.
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Sunday, October 3rd, 2010 AT 1:55 PM

7 Replies

Tiny
RASMATAZ
  • MEMBER
Hi lttldude9, Welcome to 2carpros and TY for the donation

Inspect and test the acceleration sensor, manifold absolute pressure sensor, throttle position sensor and clean the mass airflow sensor with an electronic cleaner CRC
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Monday, October 4th, 2010 AT 5:27 PM
Tiny
LTTLDUDE9
  • MEMBER
Thanks for the feedback. I just replaced the fuel filter and nothing changed. Also I got the check engine light trouble code: P1128 which is Manufacturer Central fuel airmetering valve. Please ntoe this trouble code has been on since I purchase the car (2 years ago), and this has only been a real problem for the past few months, so may be unrelated.
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Tuesday, October 5th, 2010 AT 12:25 PM
Tiny
RASMATAZ
  • MEMBER
Try cleaning the mass airflow sensor with an electronic cleaner CRC and see what happens
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Tuesday, October 5th, 2010 AT 12:32 PM
Tiny
LTTLDUDE9
  • MEMBER
Ok, also just another question. If I check the pressure of the fuel and it is too low, what could that mean? Replace fuel pump?

Thanks
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Tuesday, October 5th, 2010 AT 12:34 PM
Tiny
RASMATAZ
  • MEMBER
Could mean the fuel filter, injector and fuel pressure regulator leaking and the fuel pump
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Tuesday, October 5th, 2010 AT 12:36 PM
Tiny
LTTLDUDE9
  • MEMBER
Ok wow, I wouldn't want to replace all of them if I didn't have to (I have replaced fuel filter). Is there a way I can pinpoint the problem? Does it help to know that the fuel is slow to build pressure in the beginning, but once it's built it drives fine, it's only when it hasn't been driven for 6+ hours is when it has problems.
Thanks, you are helping a ton.
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Tuesday, October 5th, 2010 AT 12:51 PM
Tiny
RASMATAZ
  • MEMBER
Check the fuel pressure with a fuel pressure gauge it should be 49.8 psi
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Tuesday, October 5th, 2010 AT 12:56 PM

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