5.0 engine problems | Page 7 | Ford Explorer - Ford Ranger Forums - Serious Explorations

  • Register Today It's free! This box and some ads will disappear once registered!

  • Holiday Special! - 2 for 1 Elite Explorer sale!

    Right now you can purchase an Elite Explorer membership for $20 and receive a two year membership! If you have an existing Elite membership contact me by PM and I will upgrade your account manually.

    Click Here to start your membership and get rid of the ads!

5.0 engine problems

C420sailor

Explorer Addict
Joined
July 29, 2008
Messages
1,154
Reaction score
541
City, State
Long Island, NY
Year, Model & Trim Level
98 XLT SOHC, 99 EB 5.0L
So, in theory…could a sensor with a fault that produces an out of limits voltage affect the signal sent by another sensor?
 


Holiday Special! Join the Elite Explorers $20 for 2 years! Gets rid of the ads!

Elite Explorer members see no advertisements, no banner ads, no double underlined links, can add their own profile photo, upload photo attachments in all forums, and Media Gallery, create and save more private conversations, and more. Join Today. Your support is greatly appreciated.




410Fortune

Truck Season!!
Staff member
Moderator
Joined
August 3, 2000
Messages
26,982
Reaction score
2,624
City, State
NORTH IDAHO, 7B
Year, Model & Trim Level
B2 "Slightly" Modified
Callsign
FOURTEN
maybe? Not something I have ever seen
 








EB4X

Well-Known Member
Joined
December 28, 2016
Messages
913
Reaction score
392
City, State
Orange county, Ca
Year, Model & Trim Level
95 Explorer 4X 4.0 ohv
". You might want to consider that a 5.0 with 250,000 mile might have a worn out timing set (chain and or sprockets) and jumped timing (and possibly bent a valve). This could explain all your symptoms"
OR have tried replacing your coil...?
 




Mikey195612

Elite Explorer
Joined
September 9, 2021
Messages
57
Reaction score
8
City, State
Jasper, Alabama
Year, Model & Trim Level
2000 explorer xlt
". You might want to consider that a 5.0 with 250,000 mile might have a worn out timing set (chain and or sprockets) and jumped timing (and possibly bent a valve). This could explain all your symptoms"
OR have tried replacing your coil...?
Have replaced coils, chain and sprocket may have some wear but has not jumped time
 




410Fortune

Truck Season!!
Staff member
Moderator
Joined
August 3, 2000
Messages
26,982
Reaction score
2,624
City, State
NORTH IDAHO, 7B
Year, Model & Trim Level
B2 "Slightly" Modified
Callsign
FOURTEN
If the code keeps coming back pointing to the cam sensor p0340

Have you removed the cam sensor and synchronizer body yet?
The codes point to a bad cam sensor

If the cam sensor checks out and the wiring between them checks out and the synchronizer was indeed setup on the correct cam tooth with the engine at TDC cyl1 on compression stroke, then it maybe a bad PCM!!

Of course a compression test might be a good idea, also have a look at all 8 spark plugs
 




Mikey195612

Elite Explorer
Joined
September 9, 2021
Messages
57
Reaction score
8
City, State
Jasper, Alabama
Year, Model & Trim Level
2000 explorer xlt
If the code keeps coming back pointing to the cam sensor p0340

Have you removed the cam sensor and synchronizer body yet?
The codes point to a bad cam sensor

If the cam sensor checks out and the wiring between them checks out and the synchronizer was indeed setup on the correct cam tooth with the engine at TDC cyl1 on compression stroke, then it maybe a bad PCM!!

Of course a compression test might be a good idea, also have a look at all 8 spark plugs
The code is p0320 and I have changed the pcm
 




410Fortune

Truck Season!!
Staff member
Moderator
Joined
August 3, 2000
Messages
26,982
Reaction score
2,624
City, State
NORTH IDAHO, 7B
Year, Model & Trim Level
B2 "Slightly" Modified
Callsign
FOURTEN
This is an interesting code on a 5.0 explorer
It Points to an issue with the crankshaft position sensor
Sorry I kept referring to the camshaft pos sensor
A quick google search for explorer p0320 brings up a few threads

Have you inspected the crank pos sensor? And the crank damper? Wiring to the sensor?

The computer is telling us where to look, that is the good news
 




Mikey195612

Elite Explorer
Joined
September 9, 2021
Messages
57
Reaction score
8
City, State
Jasper, Alabama
Year, Model & Trim Level
2000 explorer xlt
This is an interesting code on a 5.0 explorer
It Points to an issue with the crankshaft position sensor
Sorry I kept referring to the camshaft pos sensor
A quick google search for explorer p0320 brings up a few threads

Have you inspected the crank pos sensor? And the crank damper? Wiring to the sensor?

The computer is telling us where to look, that is the good news
Well I have replaced the sensor as for the wiring no I haven't because it is shielded.
 




410Fortune

Truck Season!!
Staff member
Moderator
Joined
August 3, 2000
Messages
26,982
Reaction score
2,624
City, State
NORTH IDAHO, 7B
Year, Model & Trim Level
B2 "Slightly" Modified
Callsign
FOURTEN
What about the crank damper? Any evidence that there is contact?

Just because the wires are shielded does not mean you cannot check the condition of the loom, routing, the condition of the pins and connector and do a continuity test from sensor to the pcm
The shielding can be reset if you need to trim it to get a look see
 




Mikey195612

Elite Explorer
Joined
September 9, 2021
Messages
57
Reaction score
8
City, State
Jasper, Alabama
Year, Model & Trim Level
2000 explorer xlt
What about the crank damper? Any evidence that there is contact?

Just because the wires are shielded does not mean you cannot check the condition of the loom, routing, the condition of the pins and connector and do a continuity test from sensor to the pcm
The shielding can be reset if you need to trim it to get a look see
I have not done a continuity test on that I will give that a try.but if say there is a problem with the wire how would you go about repairing it?
 




EB4X

Well-Known Member
Joined
December 28, 2016
Messages
913
Reaction score
392
City, State
Orange county, Ca
Year, Model & Trim Level
95 Explorer 4X 4.0 ohv
/\ If damage found, I would run new pair of wires from sensor inside 1/4" plastic flex conduit zip tied on outside path/harness of originals and then butt-splice onto last 2 inches of originals just before they go into amphenol connector/ PCM.
 












Turdle

Lowrider
Staff member
Moderator
Elite Explorer
Joined
June 16, 2003
Messages
29,723
Reaction score
1,208
City, State
Humboldt, KS
Year, Model & Trim Level
2000 Mounty




410Fortune

Truck Season!!
Staff member
Moderator
Joined
August 3, 2000
Messages
26,982
Reaction score
2,624
City, State
NORTH IDAHO, 7B
Year, Model & Trim Level
B2 "Slightly" Modified
Callsign
FOURTEN
cut the shielding!! inside it is just two wires. I usually cut open with razor blade, then I can always wrap them right back up
the way they route down along the timing cover in between the coolant sensors, etc it can get tight. Anyone in there doing a belt, water pump, etc etc could easily pull to taught or chafe or what have you over the years........
The pcm is the best tool we mechanics have
it tells us where to look

Problems with the 5.0 and a crank sensor usually result in a no start, or a cutting out issue like you are having....... alot of times it happens when there is moisture (puddles, rain, slush), the crank sensor is exposed to road salts, grime, oil, coolant, other fluids that leak on higher mile 5 oh
The crank damper has also been known to break out the center rubber donut, they can fail in time and allow a wobble or slippage
So a good inspection of the crank sensor, the wiring, connectors, the crank sensor mount, damper (Balancer) all of it!
Hopefully something jumps out at as the issue
Also I will only use a FORD crank sensor, I would rather put a known good junk yard part then an aftermarket cheapo POS!!!!
 




Top