Question about 2001 Ford Explorer Sport

2 Answers

I have an Explorer Sport trac 2001 (2005 in Venezuela)... last week I took her to complete a service on the fuel injectors and also replaced spark plugs as she is very slow to pull up.. I have checked everything else and can not find the problem... also when driving around 60 o70 KMH and I try to accelerate to activate the OD then the RPMs goes to around 3000 the car goes to 80 or 85 KMH for abit then the engine's light comes up on the panel and i have to desaccelerate..any ideas...???

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  • Guillermo Bencomo
    Guillermo Bencomo Nov 12, 2009

    Hi there..

    yes, I understand all that about the ECM and electronic etc.. but the lights of the "check engine" signal only comes up when I try to accelerate hardly for 5 to 10 second where the car does not go up, it just I hear the engine throtling ujp bu the speend only goes up for 10 to 15 KPH more, then it is when this signal is on intermitently, it stay there foir 15 to 20 seconds while I see the power of the engines comes down as well and then the lights goes off... it is very weird... and I started to notice this when I went to the mountains and the sport trac slowed down on the inclinated road when going up, I could not go more that 60 KPH at full throttle... then I took her to service the fuel injectors and spark plugs with not inprovements...

  • Guillermo Bencomo
    Guillermo Bencomo Nov 12, 2009

    It is already done ... I did replace the spark plug wiring set yesterday as well....but not improvement...
    Regarding the comment about the EGR, see below

    Thanks...this seem to be a good reason for the issue.. how can I locate the EGR valve and the groove to check it..? do you have any diagram or schematic? the engine is a 4.0 L SOHC 6V serial 8XDZU77E858A42484

  • Guillermo Bencomo
    Guillermo Bencomo Nov 12, 2009

    I had made an appointment to the Ford workshop to use the scanner to find out if there is any error or code stored there, I have to take it there on Monday... just to mention as well that there is not signs "on" at the car at the moment.. it just comes to "ON" when trying to accelerate etc..

  • Guillermo Bencomo
    Guillermo Bencomo Nov 13, 2009

    Hi people...,

    Thanks to both of you for your suggestions...i had the scanner applied to the SportTrac and definitelly was a missfire message on it..

    After a thorough troubleshooting the mechanic found out that the exhaust was blocked, thus caqusing an overpressure on the line, we got the exhaust disassembled and replaced and now the engine is working excellent...

    The mechanic also recommended to complete a service on the throttle mechanism.... I wonder if any of you have a manual or procedure to complete that so we can do it at home...

    Thanks again

  • yadayada
    yadayada May 11, 2010

    Why my Check Engine/Service/Check Engines Soon light comes on? The engine computer or PCM/ECM All modern vehicles have a computer or the ECM (Electronic Control Module) that controls the operation of the vehicle powertrain (the engine and transmission). The main purpose of this is to keep the engine running at top efficiency with the lowest possible emissions. With constantly growing demands for better fuel economy and new strictest emission regulations it's not very easy to achieve. The engine parameters need to be constantly and precisely adjusted according to various conditions such as speed, load, engine temperature, gasoline quality, ambient air temperature, road conditions, etc. That's why today's cars have much more electronics than in early days - there is a large number of various sensors and other electronic devices that help the vehicle computer or ECM to precisely control the engine and transmission operation and monitor emissions. The vehicle computer system has self-testing capability. When the computer senses that there is a problem with some of the components it stores the correspondent trouble code(s) in its memory and lights up the "Check Engine" or "Service Engine Soon" light to tell you that there is a problem and your car needs to be looked at. To properly diagnose what is wrong, you need to take your car to a mechanic or a dealer. The technician at the dealership or a garage will then hook up the scanner to the car computer and retrieve the stored trouble code(s). Then he (she) will look it up in the service manual provided by a car manufacturer. The service manual contains the list of possible codes (about few hundreds) and describes what each code means and what needs to be tested. The code itself doesn't tell exactly what component is defective - it only indicates where to look, what engine parameter is out of normal range. The technician will have to perform further testing to pinpoint a defective part

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  • Ford Master
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You need to replace the spark plug wire set.

Posted on Nov 12, 2009

  • yadayada
    yadayada Nov 12, 2009

    the only reason the check eng lite would blink is a missfire, the EGR would not cause a miss fire, maybe a rough idle buy no miss.

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  • Ford Master
  • 5,537 Answers

If the light came on it should have a code for a scanner. That would indicate the problem. But there are a few things to look at. Under the airhorn which bolts to the intake manifold there is a breather groove for the EGR valve. This groove must stay clean.

Since you are demanding more EGR flow with higher speeds the blocked groove is causing a restriction and causing the other components to trip a warning.

I do not know your Pollution equipment. On older U.S. cars there were airpumps that were belt driven and some had a type of air filter that needed cleaning.

Another part called a (TPS) throttle position sensor can affect the engine performance.

Posted on Nov 12, 2009

  • fordexpert Nov 15, 2009

    You are welcome. We are here to help.

  • fordexpert Nov 15, 2009

    The service to the groove under the airhorn is pretty simple. Behind all of the airfilter plastic there is a metal part which is shaped like tuba horn only smaller. It is more pronounced on a V-8 but you should have the equivalent.



    There is a gasket with 4 bolts which mount the airhorn to the intake. Under the gasket should be a groove which feeds the exhaust flow to the EGR. This is probably really carbonned up because your exhaust was plugged. Just use a drill bit to go into the groove and scrape it out. Use carb cleaner to desoot the area. The top of the airhorn has a butterfly valve and the TPS. When you clean the butterfly valve wipe off the butterfly flap and contact areas. You can seriously clean further down the horn where it mounts. This difference in cleaning is because some of the airhorns were coated with Teflon and you do not want to scrape the Teflon off.



    The TPS switch has 2 screws and 1 electric plug. The TPS does not last forever. Its signal adjusts the spark and fuel for the position of the foot pedal. Its about a $20 part, may or may not throw a code when it is working marginally. If you are cleaning in that area it is convenient to put on a new one now.

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