Camshaft sensor problems
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Running very bad acts like it's not getting gas no acceleration 
Solved
2001 Ford F-150 Expedition 5 4 256000 miles
Ok started of only on inclines rough run back fire no acceleration sometimes die completely. Now it is permanent I have changed plugs coils camshaft sensor crankshaft sensor fuel filter. After repairs it runs idles great 5 minutes then back like crap
3 reports
Slick Rick from United States 4 years ago
Try cleaning your Mass Air Flow senser with cleaner from part store make sure it's for that senser n clean up throttle body real good with cleaner too. Also change out your PVC valve. I also had cooling fans not coming on as needed replaced couple relays n all is good now. Also check temperature control senser. Had same problems. Truck runs so much better now.
Best answer (according to Expy)
I ended up changing fuel pump and fuel pressure sensor the 1 on tank ran good for a week rite back missing barley would stay running at all disconnected mass air flow sensor not a problem since and getting better gas mileage than ever 16.8 to 17.3 interstate
CommentFord f150 5.4 3v crank no start
2010 Ford F-150 5.4L 192838 miles
Crank no start, as well as heavy smell of gas while cranking fuel pump is priming and fuel is getting to the rail. Obd2 scanner RPM reads 1638 and dash rpm reads slightly above 0 while cranking. Replaced passenger side ground replaced ground to the right of the pcm and added an extra engine block ground from the battery I was told as long as the ground that sits directly beside the PCM was bolted to the firewall where on the engine block it was bolted didn’t matter so a ran a 4 gauge ground to the front of the engine block. Did a voltage drop test and it indicated a voltage of 10.7 of a lowest… Read complete
5 replies
ckellar979 from United States 19 days ago
https://youtube.com/shorts/0v9hB7RVe9Y… Video of symptoms
Hi, with P0012 and P0022 showing both banks over-retarded along with violent backfiring when fuel is delivered, the timing chains have almost certainly jumped teeth due to failed tensioners or broken chain guides. That false 1,600+ RPM reading on the scanner will also cause the PCM to inject far too much fuel and flood the cylinders, so check the crankshaft position sensor and its wiring for damage or interference. Still, with both banks out of time, pulling the valve covers to verify mechanical timing or running a compression test should be the priority
ckellar979 from United States 18 days ago
@Gonza RI checked the starter positive connection and while unbolting it just snapped off
ckellar979 from United States 18 days ago
Also if it was physically out of time wouldn’t the truck show signs of that before dying? It was a silent death no nothing
Not necessarily. A timing chain can jump or a tensioner can fail suddenly without any warning noises or symptoms beforehand. The fact that your truck died silently doesn't rule out a timing problem. The uneven cranking in your video, along with the P0012 and P0022 codes, makes it worth checking, but it isn't proof. I'd repair the broken starter connection first, then check compression on both banks before taking anything apart. Have you been able to do that compression test yet?
CommentCrank no start
2010 Ford F-150 5.4L 196482 miles
Topic starter
So to start off this truck was a free one it because the guy couldn’t get it started and already had a new truck. He had informed me that the truck died on the highway randomly and suddenly, no noise no backfire no shaking or sputtering. He got it home it ran for 10 minutes then the same thing happened, this time it became a crank no start, he then also informed me of codes for the camshaft sensors so he had them replaced and it didn’t solve the issue he had multiple people come over and try and try again to no avail. So I got to to the truck to begin diagnosis I tried to crank i… Read complete
1 reply
Hi, finish replacing the starter and that broken positive cable first, because high starter draw and voltage drop are notorious for triggering the P0345 circuit code on the 5.4 3V. Once it cranks at proper speed, inspect the crankshaft position sensor and its connector, especially given the false cranking RPM readings flooding the engine. If it still will not start with P0012 and P0022 present, you will need to inspect the timing chains and tensioners, as jumped timing on both banks will prevent it from running regardless of compression
CommentSecurity light keeps flashing. Won't start
2005 Ford F-150 Lariat 5.4 v3 311000 miles
Replace camshaft position sensor replace the vcts drove the car go decent shut it off now it won't start instrument cluster lights are out and my security system won't stop flashing key on or off
1 reply
Same problem I was told it could be the immobilizer
CommentRunning on Only 4 cylinders
2008 Ford F-150 Truck 4.2 V6 150000 miles
No fire on 3&4 towers on Coil pack,New coil pack,plug wires, sparkplugs, camshaft position sensor
1 report
I chanved the ca. Shaft sensors and now it dosent start. But first ans
2008 Ford F-150 5.4 l 2775365 miles
So I blew about and it ripped the wires off of one of my camshaft sensors and then it started running funny so forth kept kind of driving a little bit and then I went and changed them out and it would start a little bit but not run well and then all of a sudden it just doesn't run even try to start it tries turning over but it doesn't spark go wrong wrong spark at all
1 report
My Ford F-150 bogs down at stops
2007 Ford F-150 F150 lariat 5.4v8 275000 miles
So I have a Ford F-150 and I have literally replaced both camshaft position sensors the crankshaft position sensor I have also replaced the fuel pump driver module I've replaced all the spark plugs all the coil packs and for some reason it's still bogs down when I come to a stop it will bog down and start to sound like a diesel does anybody have any suggestions
18 reports
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