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I have a 2004 Ford Focus and it feels like it is running out of gas (it isn't) when the car is cold and until I reach a consistent speed, and when going uphill. After driving for awhile it seems to drive better unless I'm going uphill. It just started doing this yesterday. I don't want to spend hundreds troubleshooting and not fix the problem.

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  • Cars & Trucks Master
  • 21,873 Answers

Normally you would check fuel pressure with a gauge first.

Posted on Jul 12, 2013

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Posted on Jan 02, 2017

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SOURCE: Buick LeSabre 2000 has hesitation uphills

It could be the fuel filter. Check fuel pressure and volume.

Posted on Aug 07, 2008

  • 1861 Answers

SOURCE: 2004 toyota prius hybrid power loss on uphill grades

Since you did not mention that there are any warning lights on at the dash, I must advise you of the following: Prius vehicles are VERY PICKY when it comes to the proper weight of oil. That being said, and if you have the wrong weight oil in it, expect problems. Easy way to check this: Take off the tube going to the throttle body at the front of the engine. Open the throttle plate & look down into the intake...Do you see any oil laying there, in puddles? If so, you def have incorrect oil in the engine. This will NOT det a DTC code, and it WILL give you your condition.

Posted on Sep 11, 2008

emissionwiz
  • 76164 Answers

SOURCE: 1999 buick lasabre hesitation while driving.

there are really only 2 things that cause this problem most of the time i have seen it, 1st a defective Mass Airflow Sensor, the second is low fuel pressure from a failing pump or obstructed fuel filter do u have a check/service engine soon light on at any time? have u had the system tested for trouble code's? Go to any Kragen or Autozone and ask for a OBD 2 trouble code test, it is free, record any code's that show and post them back here on this same thread.

Posted on Mar 16, 2009

  • 87 Answers

SOURCE: Car starts poorly during cold mornings. The idle

Sounds like a cold start valve (which is actually an additional injector in the intake to assist in cold starting) If you can get it to your local prts store while the light is on they will read the codes for free and tell you what the car thinks is amiss.

Posted on Nov 13, 2009

  • 132 Answers

SOURCE: I have a 1987 Dodge Ram 50 2wd 2.0L carb. , when i

well, i assume you did a compression check and have the plugs gapped properly? Okay then, this might not be what you want to hear but, disconnect the fuel lines, install a low pressure electric fuel pump(between 3 and 10 psi one) and install a variable pressure regulator, set it at 4psi and drive the truck. still need more power move to 5psi, adjust untill your happy.

Posted on Aug 10, 2010

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1 Answer

Engine races hot or cold


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