Question about 2004 Ford Freestar

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Check engine light on

My check engine light is on and every once in a while my van will hesitate and act like it doesn't want to go at stop lights.

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  • Anonymous Aug 04, 2008

    My check engine light is on, it cut off and hesitated when I turned it back on with a loud noise like a heavy duty truck or something.

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  • 319 Answers

You most likely have a clogged or worn out sensor in your engine/exhaust that is causing the engines computer to be unable to correctly adjust the engines operating conditions.

You need to figure out which code is causing the problem. AUTOZONE or other parts houses may read it for free, then use the code to figure out which part is bad.

EGR valve and DPFE sensor are most likely candidates!

Brian

Posted on Jul 21, 2008

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Posted on Jan 02, 2017

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My van has started hesitating when at a stop light or a complete stop what can cause this to happen


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there could be several reasons for this type of problem. the engine is controled through main computer(ECM) and the sensors assocciated with it. most often times a hesitation is commonly a idle issue and that would be monitored by the TPS ( throttle position sensor) if this is beginning to fail it sends faulty reradings to the computer and the computer tries to compensate and sometimes either leans or richens the fuel air mixture cause and effect is a engine stall or a hesitation. another factor is your (O2) sensors these monitor your exaust and tell the ECM to adjust accordingly the fuel mixture also. a sure fire way to tell if one ore more sensors are faulty is to either have your check engine light come on or if there is a rough start. if the check engine light isn't on then i would think there is a timing issue involved and a tune up is in order. the tune up is simple by just changing plugs and wires, however the timing is computer controled and can only be adjusted by a certified tech with the proper equipment. try and change the plugs and wires first this is the least expensive way to solve your problem. if the problem persists then take it to a shop and have a tech hook up diagnostic tools to check the ecm for fault codes to narrow down whatsensors if any are faulty.

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