Won't Start...

5.0Shocka · April 5th, 2009, 11:15 PM

Well back to the forums after a year break, although this time I have a 92 5.0 instead of an 02 GT... The problem I have been having is the car has been stalling and will just crank once trying to restart... give it 5 minutes to sit or so and it fires right back up. This problems seems to have no set of conditions, it happens hot or cold, full/empty tank, any speed/ gear operation or just sitting at a light. I will be driving along and it just cuts out like someone turned the key off...I know these have problems with TFI modules, but it doesn't follow the typical symptoms... I am leaning towards fuel pump right now but haven't been able to check pressure... I am taking the car to the shop tomorrow, to continue troubleshooting. Thanks in advance guys and gals.

Nice 5.0 · April 5th, 2009, 11:24 PM

IAC motor. When you try to restart it do you give it any gas. Try giving it maybe half throttle when it wont start. If that causes it to start then i would learn towards the IAC motor. You can actually take the IAC motor apart while your testing and manually operate the plunger and see if it will start that way.

88_FiveOh · April 5th, 2009, 11:26 PM

hows it run?

5.0Shocka · April 5th, 2009, 11:33 PM

When trying to restart I have tried half throttle and full throttle. Right now all it does is crank... Do you think that could cause the random stall though?

5.0Shocka · April 5th, 2009, 11:33 PM

And once its running it runs strong... not sputtering and a smooth idle.

Chris951 · April 5th, 2009, 11:37 PM

Check your fuel pressure. If it was the TFI, the engine wouldn't start at all but it would crank. So I don't think that's your problem. Replace the fuel filter and see if that does anything.

5.0Shocka · April 5th, 2009, 11:42 PM

Yea it was about a once a week issue but now it doesn't start at all. I did replace the fuel filter about a month ago once the symptoms started.. The car didn't have any problems for a couple weeks, then it came back. I have been trying different things each time it cuts out. Banging on fuel tank, working the car back and forward while in gear... ect.

5.0Shocka · April 6th, 2009, 12:38 AM

bump for a little love...

Nice 5.0 · April 6th, 2009, 10:37 AM

You gotta start with the basics. Check for spark and fuel when it won't start. Also check the fuel injector harness. And see if it has a pulse. Sounds like it may be a computer but you need to do some troubleshooting.

NeverEnuff · April 6th, 2009, 11:18 AM

x2 on the computer.

But check your fuel pressure too. Fuel pumps can also be 'weak' and cause havoc like this.

April 5th, 2009, 11:15 PM	#1
5.0Shocka Newbie 92 LX 5.0 Join Date: Apr 2009 Location: Oahu, Hawaii Posts: 11 iTrader: 0 reviews	Won't Start... Well back to the forums after a year break, although this time I have a 92 5.0 instead of an 02 GT... The problem I have been having is the car has been stalling and will just crank once trying to restart... give it 5 minutes to sit or so and it fires right back up. This problems seems to have no set of conditions, it happens hot or cold, full/empty tank, any speed/ gear operation or just sitting at a light. I will be driving along and it just cuts out like someone turned the key off...I know these have problems with TFI modules, but it doesn't follow the typical symptoms... I am leaning towards fuel pump right now but haven't been able to check pressure... I am taking the car to the shop tomorrow, to continue troubleshooting. Thanks in advance guys and gals.

April 5th, 2009, 11:26 PM	#3
88_FiveOh Regular 1988 lx 13.13@101.78 Join Date: Feb 2009 Location: Maryland Posts: 191 iTrader: 0 reviews	hows it run? __________________ 302 out of a lincoln lsc, Cobra upper and lower, 1.6 rr's, msd cap, bbk equal lengths, off road h pipe, mac pro chambers, 4:10's, bbk drag launch springs, 4cylinder tranny, short shifter, 20% tint, and 6k H.I.D's. 13.13@101mph 1.8 60ft on D/R's

Threads Similar to: Won't Start...
Thread	Thread Starter	Forum	Replies	Last Post
no start	90mustang50	5.0 Mustangs	3	July 18th, 2008 02:50 PM
Start up	chris1	4V / SVT	15	July 15th, 2008 11:05 PM
where to start	EasyE64	V6 Mustangs	63	September 25th, 2007 02:50 AM
i like the start	DanishStallion	Videos	2	March 22nd, 2007 09:05 PM
Where to start	mikedoogen	2005 - 2010	17	March 20th, 2007 09:19 AM

April 5th, 2009, 11:24 PM	#2
Nice 5.0 Regular 1993 12.9 @ 105 Join Date: Jan 2007 Location: Raleigh NC Posts: 299 iTrader: 0 reviews	IAC motor. When you try to restart it do you give it any gas. Try giving it maybe half throttle when it wont start. If that causes it to start then i would learn towards the IAC motor. You can actually take the IAC motor apart while your testing and manually operate the plunger and see if it will start that way.

April 5th, 2009, 11:33 PM	#4
5.0Shocka Newbie 92 LX 5.0 Join Date: Apr 2009 Location: Oahu, Hawaii Posts: 11 iTrader: 0 reviews	When trying to restart I have tried half throttle and full throttle. Right now all it does is crank... Do you think that could cause the random stall though?

April 5th, 2009, 11:37 PM	#6
Chris951 Hardcore Enthusiast 1991 mustang 5.0 Join Date: Aug 2007 Location: Mesa, AZ Posts: 1,938 iTrader: 0 reviews	Check your fuel pressure. If it was the TFI, the engine wouldn't start at all but it would crank. So I don't think that's your problem. Replace the fuel filter and see if that does anything.

April 5th, 2009, 11:42 PM	#7
5.0Shocka Newbie 92 LX 5.0 Join Date: Apr 2009 Location: Oahu, Hawaii Posts: 11 iTrader: 0 reviews	Yea it was about a once a week issue but now it doesn't start at all. I did replace the fuel filter about a month ago once the symptoms started.. The car didn't have any problems for a couple weeks, then it came back. I have been trying different things each time it cuts out. Banging on fuel tank, working the car back and forward while in gear... ect.

April 6th, 2009, 12:38 AM	#8
5.0Shocka Newbie 92 LX 5.0 Join Date: Apr 2009 Location: Oahu, Hawaii Posts: 11 iTrader: 0 reviews	bump for a little love...

April 6th, 2009, 10:37 AM	#9
Nice 5.0 Regular 1993 12.9 @ 105 Join Date: Jan 2007 Location: Raleigh NC Posts: 299 iTrader: 0 reviews	You gotta start with the basics. Check for spark and fuel when it won't start. Also check the fuel injector harness. And see if it has a pulse. Sounds like it may be a computer but you need to do some troubleshooting.

April 6th, 2009, 11:18 AM	#10
NeverEnuff Hardcore Enthusiast 1989 LX Coupe 7.1@99mph Join Date: Jan 2009 Location: Texas Posts: 1,685 iTrader: 0 reviews	x2 on the computer. But check your fuel pressure too. Fuel pumps can also be 'weak' and cause havoc like this.

Remove Advertisements Sponsored Links
Ford Mustang Forum Advertisement

All times are GMT -4. The time now is 06:54 PM.
Contact Us - Modded Mustangs : Ford Mustang Forums - Privacy Statement - Top
Modded Mustangs is ©2005-2008, All Rights Reserved, And is Not Affiliated with Ford Motor Company. Forum is powered by vBulletin ©2000 - 2012, Jelsoft Ent. Ltd. & SEO by vBSEO 3.3.2 ©2009, Crawlability, Inc.