Question about 1991 Ford F150

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91 f 150 reg. cab short bed 4x4 after engine gets to operating temp.l its like your turning the key on and off pull over let it sit for awhile and it will run little while longer and starts agian it dont run hot on the temp gage just normal i have replaced fuel pump spark plugs wires distrub. cap and sensor in throttle body and o2 sensor maybe the same sensor cant remember now any help would be great thank you

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  • Ford Master
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You need to do an EEC IV engine control system fault code test, you can do that without special tools by following the instructions at the link below. EEC IV Self Test Ford Fuel Injection and EEC IV Electronic Engine Control...

Posted on Jul 25, 2017

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6 Suggested Answers

6ya6ya

6ya staff

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Posted on Jan 02, 2017

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Anonymous

SOURCE: 96 ford f-150 reg cab 302 motor

One place to start,  Spark to ignition and power fuel are two different sources.  Unless they both work off the same fuse.  The fuel pump needs power to run the fuel pump, Ignition needs spark to fire the engine. Check your fuses because in my opinion it is odd that they both went out at same time.  Good Luck

Posted on Sep 06, 2008

keemo68

Ronald Mueller

  • 1263 Answers

SOURCE: 96 Ford truck engine lIght will not go away.

this is the problem with code readers they bwill tell you the code and sometimes even have a reset feature. However they do not tell you the parameters and don't have an drivability feature so you can not test the ecm and all the sensors or modules while engine is running. diagnostic scan tools are very expensive and hard to use unless you have been trained to do so and PEP BOYs is not what I call real reliable mechanics to begin with. Now I concure with toddG on his reasoning in what might be the potential fault. if your vehicle is running rich or lean your O2 sensor will pick this up on the exaust side, however it is not the sole sensor responsible for the ecm adjusting the fuel air mixture.. you stated that you have switched out several o2 sensors and the fuel pressure regulator, but there is also you mass air flow sensor, your TPS sensor, as well as your map sensor these are worth checking out and just because a faulty sensor is the problem doesn't mean you will get a code each time. the system is built with redundancy in order to keep the vehicle running. in order to get the best possible diagnois take it to a shop where they have a full diagnostic scanner this will have not only OBD1 and OBD2 but cam protocol as well. while the tech is scanning the vehicle he will be able to see how the engine is performing under realtime conditions. please rate this as well as change the rating for toddg because he did offer a valid suggestion

Posted on Oct 02, 2008

emissionwiz

Marvin

  • 85206 Answers

SOURCE: 1997 Dodge Ram 1500 transmission will a 1996 interchange

No, the frame is different.

Posted on Nov 30, 2008

Anonymous

  • 4 Answers

SOURCE: what transmission will fit a 1989 f-150 reg. cab long bed 2 whel

are you looking for auto or manual trans? for a auto trans c4 or c5 or a c6 trans will fit and for manual trans AOD/AOT or E40D or a AODE-W(4R70W) will work aswell. have you heard about LMC? i get all my parts for my 1991 f-150 there. check it out get a free catalog everything you need for your truck you will find it there www.LMCTRUCK.com i hope this is of some help.

Posted on Apr 15, 2009

Anonymous

  • 60 Answers

SOURCE: 1987 ford bronco fuel issue

fuel pump

Posted on Jul 13, 2009

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