Go Back   MustangForums.com > Ford Mustang Tech > 5.0L (1979-1995) Mustang
Sign in using an external account
Register Forgot Password?
Search


5.0L (1979-1995) Mustang Technical discussions on 5.0 Liter Mustangs within. This does not include the 5.0 from the 2011 Mustang GT. That information is in the 2005-1011 section.

Sponsored by Weld Racing


Welcome to Mustang Forums!
Welcome to Mustang Forums.

You are currently viewing our forum as a guest, which gives you limited access to view most discussions and access our other features. By joining our community, at no cost, you will have access to post topics, communicate privately with other members (PM), respond to polls, upload content and access many other special features. Registration is free, fast and simple, so please join our community today!


Reply
 
 
 
 
Thread Tools Search this Thread
Old 07-01-2014, 01:36 PM   #1
toyota89
 
toyota89's Avatar
 
Join Date: Jul 2014
Vehicle: 90 mustang 5.0
Location: sc
Posts: 3
Angry Help!!!

im working on a 90 5.0 standerd trans hatchback. came in as I went into store came out want crank. found no fuel psi. replaced pump after checking fuse, pwer to pump ect. have fuel psi but no spark. checked coil and no pwer out if coil but power in. replaced. still no spark while cranking... when you release the key when cranking it sparks twice? items that have been swapt and no change...
ignition coil
tune up including cap rotor ect.
icm
ignition switch.
ive checked for power to everything and it has recommended voltage.
checked my grounds and for corrosion.
the only thing left I belive is the distributor and or ecu
please help. I don't want to thro parts like it starting to turn out as.
This ad is not displayed to registered or logged-in members.
Register your free account today and become a member on Mustang Forums!
toyota89 is offline   Reply With Quote
Old 07-01-2014, 02:24 PM   #2
Maxwelhse
4th Gear Member
 
Join Date: Jan 2007
Location:
Posts: 1,102
Default

If it's a no spark condition the best thing to do is start backward from the plugs until you find the problem. Distributor may not even be turning.
__________________
'91 GT 5 Speed
Maxwelhse is offline   Reply With Quote
Old 07-01-2014, 02:39 PM   #3
toyota89
 
toyota89's Avatar
 
Join Date: Jul 2014
Vehicle: 90 mustang 5.0
Location: sc
Posts: 3
Default

distributor is turning but would the stator in the distributor be an issue?
toyota89 is offline   Reply With Quote
Old 07-01-2014, 04:45 PM   #4
90nSSMD
1st Gear Member
 
90nSSMD's Avatar
 
Join Date: Oct 2012
Vehicle: 90 GT, 90 Notch, 14 GT
Location: Maryland
Posts: 98
Default

This article should get you going. Remember to start from the top and work your way down the checklist. You might find problems you never knew you had!

http://www.allfordmustangs.com/forum...checklist.html

When you're done with that, or want to have a look at almost everything else, use this:

http://www.veryuseful.com/mustang/tech/


Hope this helps.


Edit -- If you still have questions after reading through those checklists and looking at the diagrams and such, fire away.
__________________
Build Thread!


Last edited by 90nSSMD; 07-02-2014 at 10:44 AM.
90nSSMD is offline   Reply With Quote
Old 07-09-2014, 01:27 PM   #5
toyota89
 
toyota89's Avatar
 
Join Date: Jul 2014
Vehicle: 90 mustang 5.0
Location: sc
Posts: 3
Default

went through checklist and found nothing. found a pcm and swapt for fun. nothing changed. still have no spark except when you let go of the key while cranking it will spark twice. and still no fuel as well. don't know what im over looking. ecm has power in a good ground but no fire to pump or spark
toyota89 is offline   Reply With Quote
Old 07-10-2014, 08:54 AM   #6
88 orangepeel notch
4th Gear Member
 
88 orangepeel notch's Avatar
 
Join Date: Mar 2010
Vehicle: 1988 notchback
Location: Wisconsin
Posts: 1,975
Default

Try pulling the computer out and check for loose wires in connections. My car did this awhile ago and it took me awhile to trace that one down.

Have you tried swapping computers, it's rare that they go out, but mine did. Autozone has remans for $100.
__________________
306 with all bolt ons, letter cam, ported E7's, T5 swap, full exhaust, 3:55's, 2" drop, and the worst paint you'll ever see or feel.
Dyno'd 300/316, 2745lbs-track scale
Best ET………12.4@108, 1.66 60ft on 8" ET Drags.
24 mpg (combined)
88 orangepeel notch is offline   Reply With Quote
Old 07-10-2014, 10:33 AM   #7
Chromeshadow
3rd Gear Member
 
Chromeshadow's Avatar
 
Join Date: Apr 2011
Vehicle: 2012 Mustang Premium 3.7 6 Speed Manual
Location: Wisconsin
Posts: 552
Default

imo-You have a bad connection in your ignition system. I can't tell you exactly where without the diagram. I believe what is happening is: When you release the key, no current is going to the starter, so you get enough voltage to the ignition to get spark. If your battery voltage stays above 9V when cranking, it can only mean (imo) that you have at least one poor connection in the ignition system so that you are not getting enough to run the spark while the starter is cranking. Here is a quick way to tell if I am correct, get a second battery that you can jumper cable directly to the starter. Turn the key to run, then jumper the starter with the second battery. If it starts up, you'll just need to chase down the electrical issue.
__________________
2012 Mustang Premium 6 speed Manual
Starkey Fog Lights
5 spoke chrome American Muscle 18" x 9" wheels
Nitto 255/45ZR18 Tires
H&R Sport Front and Rear Sway Bar
J&M lower control arms
TMI adjustable tilt headrests
Gaslock LED Shift ****
Shelby door subs
Sony 200W amp

2009 Solstice GXP Turbo
2013 F150 XLT 4X4
Chromeshadow is offline   Reply With Quote
Old 07-10-2014, 10:33 AM
MustangForums
Ford Mustang




Paid Advertisement

 
 
 
Reply

Thread Tools Search this Thread
Search this Thread:

Advanced Search

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off

Forum Jump

Advertising

Featured Sponsors
Vendor Directory
New Sponsors
All times are GMT -5. The time now is 04:13 AM.

© Internet Brands, Inc.


This forum is owned and operated by Internet Brands, Inc., a Delaware corporation. It is not authorized or endorsed by the Ford Motor Company and is not affiliated with the Ford Motor Company or its related companies in any way. Ford® is a registered trademark of the Ford Motor Company
Emails Backup