99-04 mustang gt fuel trouble - Mustang Evolution

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Old 10-28-2013, 09:36 PM   #1
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99-04 mustang gt fuel trouble

I got 03 mustang gt I've change the filter and fuel pump and I'm still having trouble starting up I think it might be my fuel relay but I can't find it when I bought the car it came with out the owners Manual anything would be helpful
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Old 10-28-2013, 09:49 PM   #2
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Are you saying that the car won't start at all or that it is hard to start?
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Old 10-28-2013, 10:31 PM   #3
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Usually with hard/trouble start, its either spark or fuel related. Does the pump prime when you turn the key to the "on" position? You should hear it whine for a second or two. Plus like asked above, is it startig at all?
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Old 10-28-2013, 10:32 PM   #4
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Fuel relay is in the ccrm. Its in the passenger fender well. However i would check to see if the inertia switch has been popped or is bad. Inertia switch will also cause no fuel to be sent. Does fuel get to the fuel rail? Oh btw, if u just did the fuel filter did u prime the rail? I.e. turn key on with out turning the car on then 3 sec later turn it to the off position. Repeat about 10 times and start it up.!
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Old 10-28-2013, 10:45 PM   #5
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Yeah the pump works you can hear whine up but it's having to start up it make a weird poping noise like the fuel injectors are dry up or something like that but the car we start after I mess with it for a bit

---------- Post added at 10:45 PM ---------- Previous post was at 10:44 PM ----------

I've check the switch in the back the button is push Down so idk what can it be
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Old 10-28-2013, 10:48 PM   #6
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Quote:
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Yeah the pump works you can hear whine up but it's having to start up it make a weird poping noise like the fuel injectors are dry up or something like that but the car we start after I mess with it for a bit

---------- Post added at 10:45 PM ---------- Previous post was at 10:44 PM ----------

I've check the switch in the back the button is push Down so idk what can it be
You need to do a fuel pressure test.
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Old 10-28-2013, 10:52 PM   #7
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Yeah I'm gonna have to thanks
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Old 10-28-2013, 10:58 PM   #8
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Prime the fuel rail

---------- Post added at 11:58 PM ---------- Previous post was at 11:57 PM ----------

Read how i explained it if you just replaced the fuel filter that is y you would have no fuel. Prime the fuel rail a couple of times and start it
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Old 10-28-2013, 11:01 PM   #9
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Also check for any codes. It may help speed up the diagnosis. This may have something to do with the fuel pressure sensor but get it diagnosed properly before replacing any unnecessary parts.
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Old 10-29-2013, 01:55 AM   #10
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Did you ever clean or replace the IAC? They are a common problem for our cars. They usually make our cars run bad/hard to start...
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Old 10-29-2013, 02:21 AM   #11
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Thanks man I will check the IAC give it a good clean I looking into kinda sounds like my problem because when warm up I use it for a while then later on the day I have trouble starting it up
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Old 10-29-2013, 05:40 AM   #12
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Thanks man I will check the IAC give it a good clean I looking into kinda sounds like my problem because when warm up I use it for a while then later on the day I have trouble starting it up
An easy way to determine if it's the IAC, is if your car doesn't start or idles erratically, pop the hood and tap the IAC (lightly) with a brass hammer. They try starting or start the car again. It should crank and run with no problems--this is temporary but at least you know. The problem with the IAC is that it's unlikely to throw a code. For the $$, just order one and change it especially if you still have the stock piece. Good luck!
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Old 10-29-2013, 02:20 PM   #13
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Ok guys I have tuner an dtc code 0442 came up can it be the gas cap or the egr valve
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Old 10-29-2013, 02:44 PM   #14
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Ok guys I have tuner an dtc code 0442 came up can it be the gas cap or the egr valve
Could be, but a gas cap wouldn't be your problem. An egr would make your car run real rough at idle. Dont think its related to your issue.
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Old 10-29-2013, 02:51 PM   #15
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But it doesn't idle bad when I have it running I'm might have a hose that's worn down also
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Old 10-29-2013, 02:59 PM   #16
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Aftet it gets running, and you turn it off, if you were to turn it on again quick, will it start right up?
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Old 10-29-2013, 03:00 PM   #17
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If the engine is warm up yes
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Old 10-29-2013, 03:09 PM   #18
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Oh ok. And you said the pump is keeping pressure in the lines?
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Old 10-29-2013, 03:16 PM   #19
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I had a similar problem. Mine would not idle good and would have long startup. Turns out my pump was going bad and finally died. 1 new pump later and all is well
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Old 10-29-2013, 04:00 PM   #20
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Yeah the pump is good you can hear kick up and I change the fuel filter
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Old 10-29-2013, 04:05 PM   #21
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Mine would prime and you could hear it pump. The seals were bad and it leaked inside the tank causing lower pressure.
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Old 10-29-2013, 04:16 PM   #22
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Oh ok thanks gotta check it all that than thanks hopefully I have it running soon this is how it sounds when alive http://youtu.be/YuNivm6bXLc
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Old 10-29-2013, 04:20 PM   #23
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That's what made me suspicious of the fuel pressure sensor. You said that the pump is new correct?
Again, it may not be related. So I stress a proper diagnosis.
I'm assuming that this car is tuned up and all of the obvious things have been addressed.
The cause of that code could be the problem. If there is a large enough vacuum leak it could be causing a lean condition during cold starts.
If no one comes up with a good answer, Ill look up that code in the repair manual tonight and see what it says.
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Old 11-11-2013, 06:47 PM   #24
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Ok I kinda figure out the problem with my fuel I'm thinking it's fuel solenoid harness
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Old 11-11-2013, 07:20 PM   #25
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I believe the trouble with my fuel is the solenoid
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