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.

Fuel issue, HELP please.

Thread Tools
 
Search this Thread
 
Old 03-09-2015, 06:38 PM
  #1  
ecpalmer
Thread Starter
 
ecpalmer's Avatar
 
Join Date: Mar 2015
Location: Oklahoma
Posts: 2
Default Fuel issue, HELP please.

Ok, here's what I've done so far:
Replaced fuel pump
New battery
New ignition cylinder
Checked inertia switch
Has spark
Checked fuses

Far as I can tell (when the fuel pump is wired directly to battery) I am getting fuel and spark, rotates but wont start. Also, the way I checked the spark was putting a wire inside one of the boots and while sitting in the car and cranking the motor I watched it spark/arc from the wire to the door hinge, spark wasnt impressive but it was there....fyi.




What isnt working:
Fuel pump doesnt kick on when I turn the ignition switch. I wired it directly to the battery and it runs so I know its good. What are the chances the CCRM/Radiator Fan module is faulty? I dont care if I need to hookup the fuel pump to a toggle switch to start the car as long as it starts, lol. So assume I have SPARK and FIRE but still wont start.

This is totally stock as far as I know, picked it up from a wholesaler for $1200. This is my first Mustang and I intend to make it a 12 second fun car, nothing too radical. ANY advice would be appreciated but please only knowledgeable users reply, I have a garage background and know more than just basics.
ecpalmer is offline  
Old 03-10-2015, 05:10 AM
  #2  
dawson1112
5th Gear Member
 
dawson1112's Avatar
 
Join Date: Jul 2012
Location: ohio
Posts: 3,628
Default

One needs a pretty long wire to check for spark at the door hinge. That is a lot of resistance and spark will be weak. If you have spark and you have at least 34 psi fuel pressure and the car will not start you need to look into the ignition timing, and/or if the fuel injectors are triggering. You can see if your injectors are triggering with a test light of some sort or a simple volt meter.

The ccrm is a common problem and they are known to go bad on one side while still operating the fan. But that doesn't explain the no start condition when fuel pressure is there and pump is run manually.

I believe your seeing symptoms from 2 or more problems.

Also run a KOEO to see if any codes are stored.
dawson1112 is offline  
Related Topics
Thread
Thread Starter
Forum
Replies
Last Post
9550
5.0L (1979-1995) Mustang
10
10-26-2015 05:01 PM
rocky321
GT S197 General Discussion
7
09-15-2015 10:00 AM
TfcCDR
V6 (1994-2004) Mustangs
1
09-14-2015 12:08 PM
zanemoseley
2005-2014 Mustangs
6
09-06-2015 12:58 PM
5.0 kevo
5.0L (1979-1995) Mustang
6
09-03-2015 06:24 PM



Quick Reply: Fuel issue, HELP please.



All times are GMT -5. The time now is 10:27 AM.