2000 X AWD 5.0 cranks but no start after new exhaust/cats installed

[Stickman1966]

What can be crossed off the list of things confirmed good?
The crankshaft sensor is good
Was pats ruled out completely?
Is the 5v reference voltage everywhere it should be?

if you're talking about the resistance yes I haven't found anything lower than 4.7 I think. that little drop below five might be... Are you ready for this one?.... It might be the positive battery terminal. so I'm going to get on that also. Yes the pats are ruled out completely I even talked to my guy who made my keys and he asked me what the truck was doing I showed him or I told him and he said there's not a problem because the truck is recognizing the key as working. hence the theft light what it's doing. I've checked all the grounds that I can find and although I didn't take them loose and clean them per se but I did check them for tightness and super tight the one thing that's gotten me a little concerned what Fortune said about the O2 sensors being ****ed with the guy that installed my exhaust had to rewire the one side the first O2 sensor because when I cut the cats out I yanked on it too hard and it just the wires broke so he rewired it all I can say is everything points to that exhaust being installed + something making something go bad I don't know but I'm going to keep looking. I just wanted to say a little thank you to you Josh. as with Fortune I appreciate both of you guys so I don't want anybody thinking I don't with my sense of humor and coming off as a prick that's not really who I am but I'm thinking you guys are kind of getting my sense of humor now so hopefully anyway anyway I just want to say I appreciate you and I appreciate the time that you put into this. guys like you are the reason why I got on this group this forum and why I pay the monthly subscription so for real why thank you.

 

[Josh P]

Ok, pats has been ruled out.
Do you have spark?
Fuel pressure in spec? It needs to be checked with a gauge. Harbor Freight has an inexpensive gauge set that works good.

 

[Josh P]

I wasn't aware of an app that you have to pay a monthly subscription for to participate in/on this forum.

I believe the statement was to mean he is an Elite member.

 

[Stickman1966]

I believe the statement was to mean he is an Elite member.

Well, 'Elite' is kind of an understatement but I'll go with it for now

Ok, pats has been ruled out.
Do you have spark?
Fuel pressure in spec? It needs to be checked with a gauge. Harbor Freight has an inexpensive gauge set that works good.

I understand what you're getting at I do but I have ruled out no fuel being a problem. I have like you suggested sprayed ether into the intake with no fire. multiple times. and also the simple fact that I'm not getting a spark from the coil packs which are new has kept me on this path of an electrical issue. I do appreciate your input and ideas and I am working on it as we speak so I will let you know when I get it running because I will get it running. as good as I am on ****ing **** up, cars, relationships and what not, I like to think I'm a little better at fixing them. and no, I did not turn my ex-lesbian, that was all on her LOL... her/ she/ /c &$#

 

[Josh P]

I'm working this weekend so I won't have much time to look at wiring diagrams. Which fuse numbers did you check? Make sure you have voltage at each socket. Each coil pack has a connector with a red wire. The red wire should have 12V.

 

[410Fortune]

Simple checks I was thinking of last night

Does the oil smell of fuel?
If you pull a spark plug after cranking is it wet with fuel?

And of course is the cam synchronizer spinning with the starter

 

[Stickman1966]

I'm working this weekend so I won't have much time to look at wiring diagrams. Which fuse numbers did you check? Make sure you have voltage at each socket. Each coil pack has a connector with a red wire. The red wire should have 12V.

19 would be the fuse that I pulled. And check continuity checked it on the ohm setting on the volt meter everything was good there just like all the other fuses and relays. Now when you say check each socket with the bolt meter are you talking about each side of a fuse or are you talking about independently one fuse equals one socket, I can tell you I checked both of the holes in one fuse so each hole a prong would go into i've checked for continuity and I just checked the backside of the fuses I didn't pull the fuse and checked the actual fuse box itself. The way I see it if it had continuity I guess you can't tell if it's good past that that makes sense josh my bad. I'll check that. And the last thing is yes the red wires going to the coil packs on each connector are showing 12 volts plus. I double checked the wiring at the crankshaft sensor took it off pulled the wire up and I looked through the whole wiring all the way down to the camshaft sensor and although greasy and dirty and older looking but it was intact I even took the wire out of the plastic shielding then I put the metal jacket on the crankshaft sensor and I reinstalled on in the process of reinstalling it right now I'll keep you guys updated

 

[Stickman1966]

Simple checks I was thinking of last night

Does the oil smell of fuel?
If you pull a spark plug after cranking is it wet with fuel?

And of course is the cam synchronizer spinning with the starter

10 minutes to 2:00 a.m. Captain's log...lol well I just got done reinstalling the crankshaft sensor with the metal jacket over the top I checked the wires before handing the connection and everything looks solid I then yanked off both coil packs and got down to The 5.5 mm bolts that hold the camshaft sensor in pulled those pulled the camshaft sensor cranked the motor to see if the innards were spinning synchronizer was spinning with starter put that back together put the coil backs back on before I put the coil packs back on I noticed that there was a lot of rust in between where the coil packs would sit and the base so considering the fact that I'm dealing with a mother ****er ground issue or something I went ahead and took some sandpaper and got that rust off reapplied the coil packs put a few things together that I had to take loose just to get to that crankshaft sensor, and **** you crankshaft sensor. replaced or fixed my cleaned up I should say positive battery terminal put everything back together crank the motor nothing. A lot of crank no yank, all joke and no poke. I am 100% at a loss I have no idea at this point I am all out of process of elimination procedures. and listen hate fortune you mentioned something earlier about the ignition module being a part of the PCM will my understanding of the 2000 expedition limited 5.0 V8 all-wheel drive is that ignition control module is located inside the coil packs, am I wrong? because that was an option yesterday on something to look at or replace but it's not replaceable because it's built in the coil packs and as you know those things are filled to the brim with two-part epoxy or whatever and solid hard as a rock I ain't getting into that nobody is. I mentioned this yesterday but I know you guys are probably going to laugh at this maybe not I don't know with the way things are these days AI is something to start thinking about if not using already so I put it to AI my chat gpt and they directed me to the vehicle speed sensor on the transmission. would that be a thing? I'm ****ing late no I'm not ****ing laying I'm tired and it's late so I am going to fall face first my pillow and deal with this in the morning....... *dreams about dancing The jig around his rig in the middle of the street because it fired up*.
*wakes up and realizes it was only a dream* *dances The jig anyway because not to many people know how*
**** it.

 

[410Fortune]

Funny thanks for the laughs

Nice work

The pcm is the ignition module
The coil packs are just coils

Your pcm could be fried
Seen it before especially when messing with the oxygen sensor wiring and circuits

You can ohm the crank and cam sensors

No the vehicle speed sensor is not going to cause a no start

 

[Josh P]

The number of times we've seen this issue, maybe 1 or 2 out of 100 times it ends up being the pcm. I've seen something as simple as a bad dpfe sensor cause a no start.

 

[410Fortune]

Crank sensor ohm test

Google Search

www.google.com

Cam sensor ohm test

ford explorer 5.0 cam sensor ohm test - Google Search

www.google.com

 

[allmyEXes]

@Stickman1966 5.0 won't start back up

 

[Stickman1966]

Crank sensor ohm test

Google Search

www.google.com

Cam sensor ohm test

ford explorer 5.0 cam sensor ohm test - Google Search

www.google.com

I'm replying to you Fortune because you seem to be the front man in all of this + with the help of other members and admins everything has been much appreciated by me. I just want to let you know that my best friend of 50 years and I narrowed it down to the PCM and Monday March 3rd we ordered a pre-flashed PCM for my rig. Tuesday morning my best friend who was a car guy the Chevy guy he owns a 67 Impala 427 super sport. He was found in his living room in his chair unresponsive. he died the next morning after we ordered the PCM. So this is why And explains my disappearance on this matter. I am expecting the new computer to be here any day + crossing my fingers Dad when I get a new key programmed for it that my rig fires up. I will let you know.

 

[410Fortune]

Sorry about your friend

 

[Stickman1966]

Sorry about your friend

Yeah like I said he was making my problem our problem. That's what he did that's what good friends do. And my problem just so happens to be this 2000 Ford Explorer at the time so he had been racking his brain as much as I have as much as you guys have been so he was a part of this as much as anybody else and I'm just hoping that this new PCM sends my flipping truck a spark. I appreciate you guys I'll keep you informed

 

[Stickman1966]

Yeah like I said he was making my problem our problem. That's what he did that's what good friends do. And my problem just so happens to be this 2000 Ford Explorer at the time so he had been racking his brain as much as I have as much as you guys have been so he was a part of this as much as anybody else and I'm just hoping that this new PCM sends my flipping truck a spark. I appreciate you guys I'll keep you informed

well got the new PCM a refurbished unit that was flashed programmed pre-programmed for my VIN number change it out installed it locksmith came and programmed two new keys for the PCM and everything is working as far as the pats + the scanner tool is showing the keys programmed correctly and everything working and when it comes to the vehicle shape or condition it says vehicle not starting. I'm completely at a 100% loss right now this is very troublesome and I'm at a loss fellas. I don't know what to do short of taking it to a mechanic and just open up my wallet with all of the cobwebs and dust inside because I don't have the cash to pay for a mechanic. give me some ideas I guess that's what that's all I can ask.

 

[Josh P]

It is either a failed sensor or a wire in the harness not making good contact at a connector.

 

[Stickman1966]

It is either a failed sensor or a wire in the harness not making good contact at a connector.

well when it comes to the sensors that I've replaced camshaft sensor crankshaft sensor throttle positioning sensor brand new coil packs what other sensor could it be Josh?

 

[Josh P]

well when it comes to the sensors that I've replaced camshaft sensor crankshaft sensor throttle positioning sensor brand new coil packs what other sensor could it be Josh?

It could be almost any of the sensors. We know the crankshaft sensor is good, no need to keep beating that dead horse. Some of the sensors can be unplugged to see if it starts. Have you checked the square engine harness connector at the back of the engine, it could be corrosion on a few pins. Pull it apart and post some pictures of it.

 

[Stickman1966]

It could be almost any of the sensors. We know the crankshaft sensor is good, no need to keep beating that dead horse. Some of the sensors can be unplugged to see if it starts. Have you checked the square engine harness connector at the back of the engine, it could be corrosion on a few pins. Pull it apart and post some pictures of it.

It could be almost any of the sensors. We know the crankshaft sensor is good, no need to keep beating that dead horse. Some of the sensors can be unplugged to see if it starts. Have you checked the square engine harness connector at the back of the engine, it could be corrosion on a few pins. Pull it apart and post some pictures of it.

I will do that as soon as possible thanks