Question about 1988 Ford F 150

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98 f150 missing shaking changed plugs changed throttle positioning sensor still not better. did notice that the coil pack on back side of engine loose could this be the issue

Also cannot tighten the back coil pack all the way down

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  • Master
  • 444 Answers

Change spark plug wires, One bad wire can cause it to run rough end mmiss fire.As for the coil pack tighten the bolts up,

Posted on Oct 29, 2012

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Posted on Jan 02, 2017

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  • 1 Answer

SOURCE: SPARK PLUG WIRING

i am looking for a diagram for 1996 ford f-150 for the spark plugs.

Posted on Aug 30, 2008

ZJLimited
  • 17970 Answers

SOURCE: how to change a throttle position sensor on a 94

How to Replace a Throttle Position Sensor
(DIY & Save up to $135.75 ) - Time: 2.1 hours

Parts:
1. Throttle Position Sensor - $ 55.44

Tools:
1. Scan Tool
2. Screwdriver
3. Multimeter

Procedure:
1. Locate the OBD data link connector (DLC). Refer to your owner’s manual for the specific location.

  • Tip: The OBD-I data link connector is usually located in the engine compartment near the battery or the fuse box. The OBD-II connector (post 1995 cars) is usually located beneath the instument panel next to the steering column.
2. Turn your key to the“ON” position. Do not start the engine.

3. Plug your scan tool into the OBD data link connector. Turn on the scan tool and select the appropriate steps to read the diagnostic trouble code (DTC).

    6db8845.jpg

Scanner plugged into OBD-II data link connector.
  • Tip: The OBD-II diagnostic trouble code (DTC) is a 5 character alphanumeric code. The first digit is a letter that indicates the component group, the second digit is OBD mandated or manufacturer specfic, the third digit is a subgroup, and the fourth and fifth digits define the component and basic problem.
  • 4. Locate the throttle position sensor.
6182d26.jpg

  • Throttle position sensor

  • 5. Disconnect the electrical connector from the throttle position sensor.
fc565b1.jpg

  • Electrical connector removed
6. Test the resistance of the throttle position sensor (TPS) with a digital multi-meter. If the resistance is out of specifications, the TPS must be replaced.
  • 7. Remove the throttle position sensor.

  • d3a8007.jpg

    Removing sensor mounting screws

    8. Install the new throttle position sensor. Tighten the mounting screws and attach the electrical connector.
  • 9. Erase the diagnostic trouble code (DTC) with the scan tool using the“delete” or“erase” command. Road test your vehicle to see if the check engine light returns.
fde01cf.jpg

    Check engine light

  • Tip: If the check engine light returns, repeat the diagnostic process for additional DTCs or take your vehicle to a certified repair shop.
Direct OE replacement

Hope helped with this. Good luck (remember rated this help).

Posted on Nov 05, 2009

  • 67 Answers

SOURCE: hesitation and backfire. 98 ford f150

wires are crossed

Posted on Mar 29, 2010

johnjohn2
  • 5763 Answers

SOURCE: Truck not firing properly front coil pack not firing at all.

if this truck has an o2 sensor i would replace that and also make sure the cat-converter is not plugged,this would give you your powerloss and egr code,next is your coil,this may be caused by the computer or your crank sensor,look at the tone ring that the crank sensor uses and make sure its not missing teeth or broken,also check all your fuses.

Posted on Jun 12, 2010

  • 157 Answers

SOURCE: 2004 f150 5.4 triton 4x4. Engine started missing

change the o2 sensors and this will correct the problem dont forget to have the light turned back out

Posted on Dec 01, 2010

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    ledsled378_13.gif
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    3db79bc.gif
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    2f61688.gif
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