Engine stalls

Tiny
09CROWNVIC
  • MEMBER
  • 2009 FORD CROWN VICTORIA
  • V8
  • 2WD
  • AUTOMATIC
  • 37,000 MILES
I have a 2009 Ford Crown Vic with 4.6 V8 engine, with only 37K miles. I've encountered a new and intermittent problem lately. Seems that occasionally when I start her up (usually when cold) and then put her into either drive or reverse, the rpm's drop and she dies. Isn't there some kind of switch or sender that tells the ECM that you've put it into gear, so that the ECM can automatically bring-up the RPM's a bit (so that it won't die)? If so, what tells the ECM this, and where is it located? Thanks!
Monday, February 7th, 2011 AT 10:13 PM

36 Replies

Tiny
CROWNVIC2002
  • MEMBER
  • 1 POST
Hi, Did you figure out the problem?
I have a 2002 Crown Vic with exactly the same symptoms.I have no idea what could be wrong with it. Any advice would be appretiated.
Thanks!
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Tuesday, July 19th, 2011 AT 1:08 AM
Tiny
09CROWNVIC
  • MEMBER
  • 3 POSTS
Hi,

Actually, I never received any kind of reply from this site, come to think of it. Anyway, the problem went away a couple of days after I posted the issue here, and I haven't had any problem with it since then! So, I'm not sure what to tell you, other than to wish you "good luck" in your quest to figure it out!
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Tuesday, July 19th, 2011 AT 1:19 AM
Tiny
CJ MEDEVAC
  • MECHANIC
  • 11,004 POSTS
No promises...read this

https://www.2carpros.com/questions/2005-ford-escape-rough-idle-at-low-rpm

The Medic
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Tuesday, July 19th, 2011 AT 2:47 AM
Tiny
JR MONEYMAKER
  • MEMBER
  • 1 POST
I have the same exact problem with my 2009 crown victoria I followed this guide and fixed the problem.

https://www.2carpros.com/articles/stall-at-idle

I love this site
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Monday, September 19th, 2016 AT 1:07 AM
Tiny
FORD1929ROADSTER
  • MEMBER
  • 5 POSTS
  • 2001 FORD CROWN VICTORIA
  • V8
  • 2WD
  • AUTOMATIC
  • 65,000 MILES
My engine stalls periodically mostly after I start it for the 1st start up of the day. Periodically it runs normal. I carefully check and cleaned the mass air flow sensor per instruction and check the wires in the air mass sensor to ensure its not damaged and replaced the air filter... After doing so the engine seemed to run and perform great. Next morning it started and idled fine. The next day at 1st start up the engine continues to stall. I did notice black smoke from the exhaust after starting it again from a stall. Other days it seems to run fine. Is it possibly the mass air flow sensor going bad?
Thanks for your time,
Ron
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Tuesday, March 19th, 2019 AT 10:53 AM (Merged)
Tiny
MERLIN2021
  • MECHANIC
  • 17,250 POSTS
Check fuel pressure and do a leak down test, you might have a leaking injector, I sent a PDF via email.

https://www.2carpros.com/articles/how-to-check-fuel-system-pressure-and-regulator
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Tuesday, March 19th, 2019 AT 10:53 AM (Merged)
Tiny
FORD1929ROADSTER
  • MEMBER
  • 5 POSTS
Merlin thank you for the prompt response. Fuel checked ok. Any other advice?
Ron
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Tuesday, March 19th, 2019 AT 10:53 AM (Merged)
Tiny
MERLIN2021
  • MECHANIC
  • 17,250 POSTS
Did they check for leak down? Injector sticking open may give this problem, or the pressure regulator. Black smoke shows too much fuel. Check the ECT, This acts as a choke on SEFI vehicles.
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Tuesday, March 19th, 2019 AT 10:53 AM (Merged)
Tiny
FORD1929ROADSTER
  • MEMBER
  • 5 POSTS
Yes sir leak down turned out ok.
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Tuesday, March 19th, 2019 AT 10:53 AM (Merged)
Tiny
MERLIN2021
  • MECHANIC
  • 17,250 POSTS
The IAC(idle air control) on Fords can do this, who ever checked the fuel system may be able to do an IAC count, or try removing it and see if any carbon is holding the pintle open, and clean the throttle body with throttle body cleaner. Is your check engine light on periodically?
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Tuesday, March 19th, 2019 AT 10:53 AM (Merged)
Tiny
BLACKSTAR911
  • MEMBER
  • 4 POSTS
  • 2001 FORD CROWN VICTORIA
  • 4.6L
  • V8
  • 2WD
  • AUTOMATIC
  • 225,000 MILES
Have had no problems till now, my car had been sitting all day I had made it about 5 miles down the road from my house, when my car just stalls out the service light flashes, and coolent gauge going all the way up, I was able to get it pulled over and try to crank it and it cranks just fine idles normal, start to go and it does it again does it all the way back home
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Tuesday, March 19th, 2019 AT 10:53 AM (Merged)
Tiny
FORD1929ROADSTER
  • MEMBER
  • 5 POSTS
No sir the engine light has not come on. I did tap on the throttle body and the engine came to life (normal). Sounds like something was stuck in the body and became unstuck when I tap on it. So far so good. I still dont have faith in what happened. Guess I will get some cleaner for the throttle body next.
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Tuesday, March 19th, 2019 AT 10:53 AM (Merged)
Tiny
JACOBANDNICKOLAS
  • MECHANIC
  • 110,176 POSTS
If the check engine light is flashing, you need to have the computer scanned for trouble codes. Most parts stores will do it for free and the code will direct us to the problem.
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Tuesday, March 19th, 2019 AT 10:53 AM (Merged)
Tiny
MERLIN2021
  • MECHANIC
  • 17,250 POSTS
The IAC I mentioned is bolted to the throttle body with 2 small screws, It controls. You guessed it, idle speed! And can make the car hard to start, shake at idle, and stall when idling or coasting.
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Tuesday, March 19th, 2019 AT 10:53 AM (Merged)
Tiny
BLACKSTAR911
  • MEMBER
  • 4 POSTS
The check engine lightlight does not stay on it just flashes so its not pulling any codes
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Tuesday, March 19th, 2019 AT 10:53 AM (Merged)
Tiny
FORD1929ROADSTER
  • MEMBER
  • 5 POSTS
Sounds like my problem. Where is it located on the engine?
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Tuesday, March 19th, 2019 AT 10:53 AM (Merged)
Tiny
JACOBANDNICKOLAS
  • MECHANIC
  • 110,176 POSTS
When they flash, it usually indicates a cylinder misfire. When it flashes for you, do you feel a miss in the engine?
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Tuesday, March 19th, 2019 AT 10:53 AM (Merged)
Tiny
WAY2OLD
  • MECHANIC
  • 195 POSTS
Looks something like this. It is located to the rear center of the throttle body.


https://www.2carpros.com/forum/automotive_pictures/382404_ford_iac_1.jpg

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Tuesday, March 19th, 2019 AT 10:53 AM (Merged)
Tiny
BLACKSTAR911
  • MEMBER
  • 4 POSTS
Not really it just dies
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Tuesday, March 19th, 2019 AT 10:53 AM (Merged)
Tiny
JACOBANDNICKOLAS
  • MECHANIC
  • 110,176 POSTS
There could be many issues that can cause it to stall. Did you try to scan the computer? If so and there are no codes, I guess we need to start with checking fuel pump pressure.
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Tuesday, March 19th, 2019 AT 10:53 AM (Merged)

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