Question about 1996 Ford Mustang

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What would cause my 96 gt to crank but not start?? i get no fuel pressure under the hood nor do i get 12 volts to the pump, i have changed the fuel pump and the CCRM (the box inside the right front fender) and still nothing... it quit starting after having a battery charger hooked up, thinkin this had something to do with it, any suggestions??

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This sounds like a fuel pump relay.Since it cranks,that means everything input to the PCM is good.These are start relay,start solenoid,starter,ignition switch and brake safety switch.The direct output are the fuel pump relay and a relay called an auto shut down relay,which is directly activated by the fuel pump relay to power the coil and injectors.Since the 2 relays are obviously the cheapest,take a reading at both.Some makers do not have a shut down relay but I think those are mainly Chevy.The CCRM,I am not sure what that stands for.As for the battery charger,I would need to know a little more about the situation.If you drained your battery trying to start your car but wouldn't,they are not likely related.As for the fuel pump,I wish you would have researched a little more because I know it is expensive and a pain in the a** to change.Relays go bad more often although 2 years I changed my pump on my 1995 Ford Escort.Wht I'm trying to get t is to try starting with cheaper fixes first,then you won't feel so bad if it doesn't fix. :( Just a suggestion but I have been doing repairs for years and have a system worked out due to experience.Relays are the most common fail items too,as well as switches,bulbs,and many other components but if you notice,most of these items are relatively cheap.If you have any questions or need more help,just comment here and I will get an autolink to your post and reply ASAP.Good luck,Greg

If you have any questions or need more help,just comment here and I will get an autolink to your post and reply ASAP.I really encourage responses so I can follow up properly as I know where you stand as asking someone else restarts all the explaining because we cannot see other 'Expert's' responses.Good luck,Greg

Posted on Dec 29, 2010

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  • buf363 Jan 02, 2011

    I have 2001 Cobra Mustang that has no fuel pressure. It had not been started for a few weeks and when I tried to start it, it started to catch and I got off the key too quickly and tried 2 times more and it wouldnt start. I am getting conflicting info on the fuel pump relay location and the 20 A fuse in the power distribution box under hood is good. Inertia switch does not seem to be tripped either. Does the CCRM relay control any of the fuel pump functions or power to it? My next step is pull apart a terminal block connector that seems to leave the inertia switch and go to the tank to see if there is power there. Car has only 15K on it, shouldnt be the pump, right?

  • Greg McCarthy Jan 02, 2011

    Here is a forum i found with similar stuff as what happened to you.It has great info.Good luck,Greg

  • Greg McCarthy Jan 02, 2011

    The color one you do not have to copy and paste.

  • miller78 Mar 12, 2011

    Ive got a 96 mustang GT 4.6 L it was parked for 2 months not driven at all then I go to get in it and start it up it started but ran real ruff ive replaced the fuelpump ,fuelfilter ,blew out the fuel lines ,checked the coils,fuelinjectors, noid tested the injector wires,new camsensor ,replaced the plugs and wires,car will idle but when I give it gas it dies out I have fuel in the rail but its acking like its starving for fuel Im really stumped this is the first 4.6 Ive worked on Ive got 3 other mustangs but they are the real deal V8s lol 5.0 and 5.8 if you can please give me some input I need help . miller78

  • Greg McCarthy Mar 13, 2011

    That sounds like a throttle position sensor miller.When it is bad,it has no idea how much gas is required,nor how much gas is being delivered.It also could be simply the gas has started to junk out.Ethanol will cause that on a car which has sat around for a couple of months.The cheaper way to check it would be to add some octane boost for now,preferably with a half empty tank or less and then add some gas to mix it up better/dilute it.Then if that doesn't help,best bet would be the TPS.

  • assassin892 Apr 16, 2012

    Hello Icantry I have a 96 mustang gt it has fuel and spark but won't start. Any helpful ideas would help. Thank you for your time!

  • jaycoberly
    jaycoberly Jul 17, 2012

    mabey the ecc.

  • jaycoberly
    jaycoberly Jul 17, 2012

    or icm


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After checking the fuse in the under the hood fuse box,if its ok next I want you to look in the trunk on the left side ,your looking for a black plastic switch with a red button in the center of it, check to see if the red button is pushed down, this switch is called the Inertia switch which upon impact is designed to break the voltage flow to the fuel pump, if that is depressed and the fuse is good next you need to obtain a 12 volt test light, you should have two wires going into the inertia switch one dark green with a yellow tracer,and another that brown with a pink tracer ,find a good ground point to hook up your test light clamp to (in the trunk, near your inertia switch,make sure you have a good ground or you will get falase results causing you to replace parts that you don't need) next you need to back probe the switch at the dark green and yellow wire , this next step require's a asstance to turn the ignition switch from off to the run postion,at this point (from when the key is turned from off to run ) you should see your test light glow for 10 seconds then go out,this is normal, if you in fact find that your light does glow then we know that your fuse is ok, your engine control module is good and your new ccrm is working correctly ,next in want you to back probe the brown and pink wire at the inertia switch and have your assistance re cycle the key from off to the run postion (this will test the inertia switch) again your test light should glow for 10 second ,this brown and pink wire is the wire going down to the fuel pump.if you find you have a glowing light on the green with yellow but not on the brown and pink you have a bad inertia switch. hope this helps ,if you still don't fine the problem ,write back and give me the results of your test and we will continue from there, remember thur incomplete test will only lead to replacing un nessary parts

Posted on Dec 29, 2010


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It was the 20amp fuel pump fuse that went out on my 96 GT

Posted on Feb 16, 2011

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