Question about 2003 Ford Mustang

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On acceleration or hill climb car cuts up like it wants to die steady cruise runs fine code stated something about vapor

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  • Anonymous Dec 21, 2009

    this is a 2003 ford mustang

  • Anonymous May 11, 2010

    what is this vehical?

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Anonymous

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So long as you are keeping good fuel pressure vapor should not be an issue. I would try changing your fuel filter.

Posted on Dec 21, 2009

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I have a 2004 HD electra glide. When running cruise in hills the bike accelerates normally to hold speed climbing the hill. But doesn't allow the throttle to back off to previously set speed.


Since it works one way and not the other, check wires first. I don't work on Harley's. But I know computers. Things to think about is this a can bus data system(2 wire)? Or just the old 1 data wire per computer. This would make a difference. But your possibilities are. Wiring, the PCM, or the cruise control module. Just a note. Always check all fuses first. The PCM can have up to 4 power wires on cars. Pull the fuse and visually inspect them. This takes care of bad connections.

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1 Answer

How to get Drive cycle



1. The testing has to start with the vehicle under 122 degrees F. Start the engine and idle for 2.5 minutes in Drive (auto) Neutral (MAN) A/C and rear defogger ON.

2. A/C OFF, accelerate to 55 MPH at 1/2 throttle and then 3 minutes of steady state cruise at 55 MPH.

3. Clutch engaged (MAN) no braking decelerate to 20 MPH.

4. Accelerate to 55-60 MPH at 3/4 throttle and 5 minutes of steady state cruise at 55-60 MPH.

5. Decelerate, no braking to end the drive cycle.

In some cases the Powertrain Control Module (PCM) will go into a logic lock not letting the readiness monitors run. Removing the battery cables and touching the two together will normally take care of the logic lock condition.

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1 Answer

Car slow going up hills


check the connection between the accelerator pedal and the pump as there are two different operations at work . The accelerator cable linkage may be loose and not giving full throttle where as the cruise control is getting full throttle.

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Vy Malibu has two accelerator cables are they both supposed to pull when you step on gas pedal


1 cable is for ur cruise control and does not pull unless ur cruise is on. the other 1 is ur throttle cable

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possible mass air flow sensor fault, dissconnect it and see if it improves slightly to confirm or have scan for trouble codes

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1 Answer

Missing and backfiring during acceleration and climbing hills.


Could be vapor lock in the fuel system. Next time it does this, stop and try removing the fuel filler cap... Hope this helps...;-)

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1 Answer

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good chance you have a clogged cat converter ...with engine running have someone rev engine and see how much flow you have out tail pipe. also if you hear the sound of something rattling inside exhaust that is another tell tale sign

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could be alot things if it didnt pull a code might be ur torque convertor , dirty or faultyinjectors crank position sensor

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