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'14 F150 no codes...no start #4571267
11/11/17 08:41 PM
11/11/17 08:41 PM
Joined: Mar 2009
Posts: 258
Western North Carolina
travlnman Offline OP
travlnman  Offline OP
Joined: Mar 2009
Posts: 258
Western North Carolina
3.7L, 130k , no CEL, running fine. Drove down to Tractor Supply for a few things, got in truck, turned the key and it spun fine (no battery issue), stumbled and died. Tried again, spun and spun and no start. Plugged in my Torque Bluetooth, no codes. Popped hood, checked all relevant fuses for PCM, fuel pump etc...no problem. I was about to call the tow truck, when I remembered that I changed the MAF earlier in the year after getting an Intake Air Temp code (part of MAF assy). As a matter of course,when I changed it out I threw the old one in the box and threw it in my toolbox. I located it, popped it in and it fired right up (yes I checked the connections on both the throttle body and the MAF prior to this). Not sure why it all happened the way it did...but hopefully it will help someone else. Enjoy !

Re: '14 F150 no codes...no start [Re: travlnman] #4571281
11/11/17 08:52 PM
11/11/17 08:52 PM
Joined: Apr 2006
Posts: 9,278
Birmingham, AL
01rangerxl Offline
01rangerxl  Offline
Joined: Apr 2006
Posts: 9,278
Birmingham, AL
Interesting... aftermarket or OE MAF?

Odd for it to fail to the point of a no start like that. Good thing you had the old one on you.


2002 Ford Ranger XLT | 3.0 V6 Auto 2WD | 224K miles
1994 Ford Ranger STX | 4.0 V6 Manual 4X4 | 200K miles
1994 Ford Explorer XLT | 4.0 V6 Auto 4X4 | 246K miles
Re: '14 F150 no codes...no start [Re: travlnman] #4571286
11/11/17 08:55 PM
11/11/17 08:55 PM
Joined: Aug 2008
Posts: 21,323
ON, Canada eh?
StevieC Offline
StevieC  Offline
Joined: Aug 2008
Posts: 21,323
ON, Canada eh?
Something else is going on. Your car stars on an "Open Loop" system with factory preset values (other than the coolant temperature sensor) and then it closes the loop and starts listening to all the sensors. It's a coincidence that it started. I bet if you put the old one back in place it will still start.

Last edited by StevieC; 11/11/17 08:58 PM.

'18 Dodge Grand Caravan GT - AMSOIL SS 5w20
'06 Santa Fe - 535,000km AMSOIL SS 0w30 / ATF
Re: '14 F150 no codes...no start [Re: travlnman] #4571328
11/11/17 09:34 PM
11/11/17 09:34 PM
Joined: Mar 2009
Posts: 258
Western North Carolina
travlnman Offline OP
travlnman  Offline OP
Joined: Mar 2009
Posts: 258
Western North Carolina
Autozone brand....and something else may be happening...but to work through all those things, only to have it start....could be a coincidence , time will tell.

Re: '14 F150 no codes...no start [Re: travlnman] #4571332
11/11/17 09:37 PM
11/11/17 09:37 PM
Joined: Mar 2009
Posts: 258
Western North Carolina
travlnman Offline OP
travlnman  Offline OP
Joined: Mar 2009
Posts: 258
Western North Carolina
A detail I left out...the first time , each time, after I would remove key, open door and check something it would kind of start, but never got to rpm, stumbled and died. If I never removed key...each time thereafter it would just spin but never catch.

Re: '14 F150 no codes...no start [Re: travlnman] #4571333
11/11/17 09:37 PM
11/11/17 09:37 PM
Joined: Aug 2008
Posts: 21,323
ON, Canada eh?
StevieC Offline
StevieC  Offline
Joined: Aug 2008
Posts: 21,323
ON, Canada eh?
I'd be interested to know just in the off chance that a particular OE is doing something off from other OE's.


'18 Dodge Grand Caravan GT - AMSOIL SS 5w20
'06 Santa Fe - 535,000km AMSOIL SS 0w30 / ATF
Re: '14 F150 no codes...no start [Re: travlnman] #4571345
11/11/17 09:43 PM
11/11/17 09:43 PM
Joined: Mar 2009
Posts: 258
Western North Carolina
travlnman Offline OP
travlnman  Offline OP
Joined: Mar 2009
Posts: 258
Western North Carolina
I've got a lot of things to accomplish tomorrow...so I'm going to make a point of lots of stops and starts to prove it out. Fingers crossed.

Re: '14 F150 no codes...no start [Re: travlnman] #4571361
11/11/17 10:11 PM
11/11/17 10:11 PM
Joined: Jun 2005
Posts: 11,622
Santa Barbara, CA
bdcardinal Offline
bdcardinal  Offline
Joined: Jun 2005
Posts: 11,622
Santa Barbara, CA
I was going to say that isn't a Ford replacement MAF, they have core charges on them, even the new ones.


2014 Ford Mustang GT Track Pack
1995 Ford Mustang GT

Ford/Mazda Parts Counter
NRA Benefactor Member
Opinions expressed are my own.
Re: '14 F150 no codes...no start [Re: travlnman] #4571376
11/11/17 10:50 PM
11/11/17 10:50 PM
Joined: Jun 2002
Posts: 2,755
Southeastern USA
FowVay Offline
FowVay  Offline
Joined: Jun 2002
Posts: 2,755
Southeastern USA
I know it's premature but you have the symptoms of a failing fuel pump.

Re: '14 F150 no codes...no start [Re: StevieC] #4571387
11/11/17 11:20 PM
11/11/17 11:20 PM
Joined: Dec 2014
Posts: 1,684
'murica
Ethan1 Offline
Ethan1  Offline
Joined: Dec 2014
Posts: 1,684
'murica
Originally Posted By: StevieC
Something else is going on. Your car stars on an "Open Loop" system with factory preset values (other than the coolant temperature sensor) and then it closes the loop and starts listening to all the sensors. It's a coincidence that it started. I bet if you put the old one back in place it will still start.


Plenty of cars will crank but not start if the MAF is disconnected

Re: '14 F150 no codes...no start [Re: Ethan1] #4571419
11/12/17 01:32 AM
11/12/17 01:32 AM
Joined: Aug 2006
Posts: 9,887
Central Washington
Colt45ws Offline
Colt45ws  Offline
Joined: Aug 2006
Posts: 9,887
Central Washington
Originally Posted By: Ethan1
Originally Posted By: StevieC
Something else is going on. Your car stars on an "Open Loop" system with factory preset values (other than the coolant temperature sensor) and then it closes the loop and starts listening to all the sensors. It's a coincidence that it started. I bet if you put the old one back in place it will still start.


Plenty of cars will crank but not start if the MAF is disconnected


Fords Ive played with will start and even run reasonably well without the MAF. Ive done it a few times on accident (left MAF unplugged). What tips me off when I do it now is the transmission shifts rougher. The load in the failed MAF table is higher than what it would actually be probably for safety so it calls for more trans pressure.


-Colton
2002 Ford Crown Vic PI 207k, Ex-Kootenai County, ID Unit #42
Down for engine swap
2003 Ford Crown Vic PI 75k
Castrol EDGE HM 5W30, Fram XG2
Re: '14 F150 no codes...no start [Re: travlnman] #4571451
11/12/17 04:39 AM
11/12/17 04:39 AM
Joined: Jan 2011
Posts: 2,837
N.Ohio
Lubener Offline
Lubener  Offline
Joined: Jan 2011
Posts: 2,837
N.Ohio
Originally Posted By: travlnman
Autozone brand....and something else may be happening...but to work through all those things, only to have it start....could be a coincidence , time will tell.

I have tested these before disconnecting them and the engine should run.

Last edited by Lubener; 11/12/17 04:41 AM.

The "thinking" man's friend.
Re: '14 F150 no codes...no start [Re: travlnman] #4571525
11/12/17 07:30 AM
11/12/17 07:30 AM
Joined: Apr 2008
Posts: 12,999
Onondaga County
Miller88 Offline
Miller88  Offline
Joined: Apr 2008
Posts: 12,999
Onondaga County
I always forget to reconnect the MAF when,changing air filters and never had one not start or idle. Driving is a different story.

It sounds like a fuel pump or heat soaked failing sensor


18 Forester 2.5I 6M
00 Jeep Cherokee
01 Ford F-350 XL 4x4 5M
Re: '14 F150 no codes...no start [Re: travlnman] #4571544
11/12/17 08:07 AM
11/12/17 08:07 AM
Joined: May 2010
Posts: 9,490
out there
spasm3 Offline
spasm3  Offline
Joined: May 2010
Posts: 9,490
out there
I would also think the crankshaft position sensor could do this.


13 elantra 72k 5w30 QSUD
03 chevy avalanche 80k synpwr 5w30
17 mazda cx-5 7300 miles m1 0w30
Re: '14 F150 no codes...no start [Re: Colt45ws] #4571735
11/12/17 11:30 AM
11/12/17 11:30 AM
Joined: Dec 2014
Posts: 1,684
'murica
Ethan1 Offline
Ethan1  Offline
Joined: Dec 2014
Posts: 1,684
'murica
Originally Posted By: Colt45ws
Originally Posted By: Ethan1
Originally Posted By: StevieC
Something else is going on. Your car stars on an "Open Loop" system with factory preset values (other than the coolant temperature sensor) and then it closes the loop and starts listening to all the sensors. It's a coincidence that it started. I bet if you put the old one back in place it will still start.


Plenty of cars will crank but not start if the MAF is disconnected


Fords Ive played with will start and even run reasonably well without the MAF. Ive done it a few times on accident (left MAF unplugged). What tips me off when I do it now is the transmission shifts rougher. The load in the failed MAF table is higher than what it would actually be probably for safety so it calls for more trans pressure.


Zetecs won't. From what OP is saying, it sure sounds like the Duratec/Cyclone 3.7 won't.

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