Question about 2000 Ford Focus

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2001 e-150 stumbles for 5 seconds when first started 4.9

Sometimes stumbles when idiling

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I would investigate the O2 sensors. O2 sensors have a heater on them so that the computer gets a good signal when the car is not up to temperature. When they do not heat up quickly it causes the car to run rough until the car reaches operating temperature.

Posted on Nov 16, 2008

  • six-of-ten Nov 18, 2008

    What was the problem?



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Why is the tack jumping at idil.and engine stumbling?

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I have a1999 VW Passat 1.8L and the problem is as follows: when I hit the gas pedal car idiles fine but when you let go of the pedal you could see on the Tach. how the idiling bounces up and down until it...

Generally this is due to carbon build up on the throttle body butterfly. Carbon builds around the bore of the throttle body and the airflow is difficult for the engine control module to control.
Take the rubber boot off of the throttle body (it's held on with a hose clamp with a screw that can be loosened with either a philips head screwdriver or 7mm socket) and use carburetor cleaner and a rag to clean the throttle plate and the bore that it sits in. To make this easier, remove the coolant resevoir (3 phiips head screws). Just disconnect the connector on the bottom of the resevoir, don't disconnect any hoses.
When you are done, turn the key to on, don't start the car, and press the gas pedal to the floor and hold it there for 5 seconds. This helps the ECM learn the range of the throttle plate.
You should have this all fixed up for under 5 bucks.

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I need a spark plug wire diagram im not sure if i installed them correctly its slow to start,idiling rough and running!

You didn't state what year or engine size, this image is for 1980 to 1996 nissan, but it should help.


4 cyl. firing order is 1-3-4-2
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98 Corolla stalls or stumbles when cold

It sounds like you may have picked up some small debris from the bottom of the gas tank when you ran it empty. You may need to run a fuel/injector cleaning solution through the next tank of gas to clear the debris and consider changing your fuel filter too. Sea Foam is a great fuel additive and I recomment trying it full strength. Hope this helps!

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The ford dealership has my truck now, they said it was the injectors leaking and not holding gas in the fuel rail for start up, and that would also fix the sputtering problem i have. I will know for sure no later than wensday 2/4/09 if that fixes the problem. I will post the results when i get my truck back

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Car stalls

ive seen fault crank positon sensor cause this also clogged injectors cause this ,for sake of saving money try some chevron techron injecttor cleaner but if u end up having take this car in i would go to the dealer cause all places charge the same 4 labor n lot small shops cause more damage than they fix

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