10-19-2009, 12:12 PM Show Join Date: Jul 2002 Location: TN Posts: 88 Likes: 0 Received 0 Likes on 0 Posts crankshaft sensor removal 5.4L V8 Can this be removed on a 5.4L V8 without removing the a/c compressor? A little background for anyone interested: I was getting a crank but no start condition this morning until I reseated the plug on the sensor. I let it idle until warm and tried to restart with similar no start result until reseating plug again. This is the original sensor so it's probably time to change it after 154K miles. Thanks in advance for any replies. 10-19-2009, 04:04 PM Join Date: Nov 2007 Location: whaleyville, MD Posts: 3,271 Likes: 0 Received 0 Likes on 0 Posts i've personally never had to replace the crank sensor but alldata shows that you have to remove the compressor. 10-19-2009, 06:36 PM Join Date: Aug 2007 Location: ontario, Canada Posts: 16 Likes: 0 Received 0 Likes on 0 Posts Ive worked at a Ford dealership for over 8 years now and have never had a crank sensor go bad, i have seen on these trucks the wires for the crank signal rub through on the right had side valve cover right at the froint over the cover giving a crank no start condition. hope this helps... oh yes and you do have to remove the a/c compressor... not a fun job. 07-24-2018, 11:27 PM Join Date: Jul 2018 Posts: 1 Likes: 0 Received 0 Likes on 0 Posts Crankshaft sensor removal Not sure if this is ur problem but I replaced cranck shaft sensor a few minutes ago. Had to remove upper engine pretty cover. Remove intake hose? Between the air filter and the actual intake (let's call it the turtle). Remove the belt. Remove the front rock guard/plate (4 bolts) from below. Remove three bolts holding the a/c compressor on. (Some dumb butt said remove the a/c hose, most be an a/c tech_ NO) move compressor out of way as best u can. Unplug wire while cussing. ( most electrical connectors are tough for me). 1-8mm bolt and sensor comes out. Reassemble in reverse. Ps plugged in new sensor wraped around belt and had to backtrack a bit =��#$. Still only about 1hr and 18$ for part. Hope it fixes my occasional no start for 20 min. 10-23-2019, 09:44 PM Join Date: Oct 2019 Posts: 1 Likes: 0 Received 0 Likes on 0 Posts Compressor removal on 5.4 L Take the serpentine belt off the compressor and unbolt it, set it to the side and take care of business. It took me 1.5
hours in the driveway. I changed mine because of �crank, no start periodically. I have been through FPDM,FUEL PUMP, NEW FUSE PANEL BECAUSE OF BUILT IN FUEL PUMP RELAY. I hope this does the trick. 2008 F150 Lariat 5.4l
The crankshaft position (CKP) sensor on your 4.6L or 5.4L Ford pick up (SUV or car) is a two wire type CKP sensor that you can easily and accurately test with a multimeter in Volts AC mode. You don't need a scan tool to test the Ford 4.6L, 5.4L crankshaft position sensor (although a scan tool is a must-have tool now-a-days). This tutorial will walk you thru' the whole thing step by step. You can find this tutorial in Spanish here: Cómo Probar El Sensor De La Posición Del Cigüeñal (Ford 4.6L, 5.4L) (at: autotecnico-online.com). Important Tips And SuggestionsTIP 1: The crankshaft position sensor is located on the timing chain cover. More specifically, it's located to the right (passenger side) of the crank pulley and behind the A/C compressor. TIP 2: It's very important that the battery on your Ford car (pick up or SUV) must be fully charged for this test. The battery must have enough reserve power to crank the engine easily for several seconds. TIP 3: You'll need to jack up the vehicle to gain access to the CKP sensor. Use a jack stand to hold the car up in the air. Do not trust the jack! Wear safety glasses to protect your eyes from falling debris. Think safety all of the time! TIP 4: When the CKP sensor goes bad, you'll get a no-spark no-start condition. So, if you're getting spark from the ignition coil pack or the Coil-On-Plug ignition coils, then you can conclude that the crankshaft position sensor is good and this test will not help you. Since so many things can cause a ‘cranks but does not start’ condition, the following tutorial may give you some more diagnostic/troubleshooting insights:
Where To Buy The Crankshaft Position Sensor And SaveYou can find the crankshaft position sensor for your Ford in any auto parts store. If you're wanting the buy the original Motorcraft crankshaft position sensor, you can buy it online for a whole lot cheaper than somewhere local. The following links will help you comparison shop for the Motorcraft and after market CKP sensor: Will the above crankshaft position sensor sensor fit your particular Ford pickup (car or SUV)? Don't worry, once you get to the site they'll make sure it fits (by asking you the specifics of your particular Ford/Mercury vehicle). If it doesn't fit, they'll find you the right one. The crankshaft position (CKP) sensor is one of the most critical components to get the engine in your Ford car (pick up, SUV, van) started. Since it provides the signal the PCM needs to start injecting fuel and start creating spark. Here are some specifics of the crankshaft position sensor: The 4.6L, 5.4L CKP sensor is a two wire variable reluctance sensor. What this means is that:
Coil Pack Ignition System: If your specific Ford vehicle has an ignition control module (4.6L coil pack vehicles):
Coil-On-Plug (COP) Ignition System: If your specific Ford vehicle does not use an ignition control module and is the Coil-On-Plug ignition system type:
In the next section, I'll go into some of the symptoms of a bad CKP sensor. What are the symptoms of a faulty crankshaft position sensor?Symptoms of a Bad or Failing Crankshaft Position Sensor. Issues Starting the Vehicle.. Intermittent Stalling.. Check Engine Light Comes On.. Uneven Acceleration.. Engine Misfires or Vibrates.. Rough Idle and/or Vibrating Engine.. Reduced Gas Mileage.. |