Fuel Pump not working. need help 98 GT Mustang

Fuel pump replacement!

No Problem! Glad to be of some help. That's why I love these forums. Allot of good people here willing to help. Take care of all those broken bones! Good luck, Tommy.
 
For any one interested. I paid a professional for some right to the point diagnostics. Here is all the correspondence. Since I paid for the help I don't feel I am breaking any TOS w/any sights, if so leme know and I'll be more then happy to edit.

Here is what the Tech had me do.

Fuel Pump not working. need help 98 GT Mustang - Today, 05:01
Sent to Ford Experts March 30 2009 at 7:51 PM

Fuel Pump not working. need help 98 GT Mustang - Today, 05:01 PM

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Hi all,

I am here because I have a problem w/my car. I decided let my fingers do the walking w/a little bit of Google research and it brought me here.

So far this is what I know about the problem.

The car use to start right up even after sitting for months w/a dead battery. I would use a jump box or jump start to get her going. Until last saturday that never seemed to be an issue. So after I could not get it started I figured I would start w/the obvious, does it have or is it getting any fuel. The answer is no. No fuel at all in the fuel rail.

I belive I have narrowed it down a little. I check the voltage at the inertia switch. I put my pos lead from my DMM into the Dk Green/Yellow wire and the neg lead of my DMM into the Brown/Pink wire and I get less then 2 volts w/the key in the on possition. all fuses under hood=good

N2Gaming (Online) -- 1 Accept / 1 Question 1 Answer Accepted Status: Awaiting Expert Reply Value: $9 Info Request
March 30 2009 at 7:54 PM (2 minutes and 5 seconds later) What is this?
Hello, I am John, a Ford dealer technician.

I hope I can help solve your problem quickly and accurately.



Please remember this is a pay site, to see any answers I post you will have to leave a deposit. Once you are satisfied with the answer please accept it so I can get credit.



Do you have a test light to do some basic checks? this works better than a voltmeter to diagnose your problem.



Thank you,

John

JustAnswer Expert




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John Mc (Offline) -- Ford Senior Master Technician -- 99% Positive Feedback on 660 Ford Accepts
15 years Ford Lincoln Mercury experience, 2006 Ford Ultimate Master Technician Challenge Finalist Your Reply
March 30 2009 at 7:58 PM (4 minutes and 24 seconds later)
I can prolly make one w/a a alligator clip light 12volt light bulb and a sharp pin.
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Info Request
March 30 2009 at 8:04 PM (6 minutes and 14 seconds later) What is this?
Ok with the key off and the test light grounded, check for voltage at the green and yellow wire at the inertia switch when you turn on the key. It should turn on for 3-4 seconds after you turn on the key then it will turn off. Let me know what you find.


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John Mc (Offline) -- Ford Senior Master Technician -- 99% Positive Feedback on 660 Ford Accepts
15 years Ford Lincoln Mercury experience, 2006 Ford Ultimate Master Technician Challenge Finalist Your Reply
March 30 2009 at 8:14 PM (9 minutes and 48 seconds later)
Ok I found a littel cheapo test light I forgot that I had. Any way my results.



the light turns on for about 1 second then goes out

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Answer
March 30 2009 at 8:23 PM (9 minutes and 10 seconds later) What should I do?
Ok, first take a decent sized hammer and beat on the gas tank a few times to see if the fuel pump starts working. If not there is a connector you can get to on the back of the tank about in the center. You will have to look under the bumper cover and on top of the tank. You do not have to remove the tank to get to this. Now take it loose and ground the test light and check if the pink/black wire gets power for a few seconds when you turn the key on, just like in the front. If so you have a bad pump and need to replace it. What happens to them is them is the fuel pump gets varnish build up and the pump can't spin. If the car is going to sit for a extended amount of time it would be a good idea to buy some sta-bil gas treatment to prevent this from happening again.



I hope this answer has been helpful to you! If you have any further questions please feel free to ask.

If this answer has been helpful please accept so I can recieve payment.

Thank you,

John

JustAnswer Expert




--------------------------------------------------------------------------------
IF THIS ANSWER IS HELPFUL PLEASE ACCEPT SO I CAN RECIEVE PAYMENT. PLEASE LEAVE FEEDBACK IT IS GREATLY APPRECIATED! GOAL OF 100% SATISFACTION. BONUS IS APPRECIATED!
John Mc (Offline) -- Ford Senior Master Technician -- 99% Positive Feedback on 660 Ford Accepts
15 years Ford Lincoln Mercury experience, 2006 Ford Ultimate Master Technician Challenge Finalist
Your Reply
March 30 2009 at 8:59 PM (35 minutes and 19 seconds later)
OK so it is not possible that the fuel filter if it is the original filter would not cuase the fuel pump to stop from back pressure, or is the light test telling you that the pump is overheating from not working properly and thus causing the circuit to kill the power to the pump?
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Answer
March 30 2009 at 9:12 PM (13 minutes and 38 seconds later) What should I do?
It is not killing the power to the pump, That is just the time the pump gets to prime. If you check power while somebody cranks the engine the light should stay on the whole time. A stopped fuel filter is unlikely because they will still make pressure, they just don't have flow. This allows the car to start and run but you have a low power concern. Sorry if i confused you with the 3 to 4 second thing, some cars hold it longer just depends on the make and model. As long as you see it turning on it is ok. Another thing you can do to be sure is remove the pump from the tank and leave it connected to the electrical connector. Get someone to turn the key on and see it the pump turns on. If not it is bad. This is kinda common for cars that sit. If you are into performance go ahead and get a 190 lph pump, these cost just a little more than a stock one and you get a much better pump.



I hope this answer has been helpful to you! If you have any further questions please feel free to ask.

If this answer has been helpful please accept so I can recieve payment.

Thank you,

John

JustAnswer Expert




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IF THIS ANSWER IS HELPFUL PLEASE ACCEPT SO I CAN RECIEVE PAYMENT. PLEASE LEAVE FEEDBACK IT IS GREATLY APPRECIATED! GOAL OF 100% SATISFACTION. BONUS IS APPRECIATED!
John Mc (Offline) -- Ford Senior Master Technician -- 99% Positive Feedback on 660 Ford Accepts
15 years Ford Lincoln Mercury experience, 2006 Ford Ultimate Master Technician Challenge Finalist
Your Reply
March 30 2009 at 9:23 PM (10 minutes and 41 seconds later)
well I don't have any mod's done to the car and I don't want to create more problems then what it's worth down the road, so for now no more power is needed and I plan on keeping the car bone stock.



I will test the circuit under the truck between the bumper and the tank.



What I am confused about is this.



Do I need to unplug the connector from the car to the fuel tank and if so what side is tested for power. the car side or the tank side?



Thank you,



Tony



Edited by N2Gaming on March 30 2009 at 9:27 PM
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Answer
March 30 2009 at 9:27 PM (3 minutes and 42 seconds later) What should I do?
Nothing wrong with a stock mustang, all that matters is that you got a mustang! Unplug the connector and test the car side not the tank side. Oh I forgot to say, make sure to plug the inertia switch back in first.



I hope this answer has been helpful to you! If you have any further questions please feel free to ask.

If this answer has been helpful please accept so I can recieve payment.

Thank you,

John

JustAnswer Expert




--------------------------------------------------------------------------------
IF THIS ANSWER IS HELPFUL PLEASE ACCEPT SO I CAN RECIEVE PAYMENT. PLEASE LEAVE FEEDBACK IT IS GREATLY APPRECIATED! GOAL OF 100% SATISFACTION. BONUS IS APPRECIATED!
John Mc (Offline) -- Ford Senior Master Technician -- 99% Positive Feedback on 660 Ford Accepts
15 years Ford Lincoln Mercury experience, 2006 Ford Ultimate Master Technician Challenge Finalist
Your Reply
March 30 2009 at 9:31 PM (4 minutes and 35 seconds later)
Ok I will test out and if the light goes on and turns off after the reuired prime timer then I will pull the tank and check the gas and fuel pump as suggested. If and when this proves to be the problem I will be more then happy to Accept your answer and then some.



Thank you,



Tony

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March 30 2009 at 9:32 PM (1 minute and 5 seconds later) What is this?
Ok, Thanks!




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IF THIS ANSWER IS HELPFUL PLEASE ACCEPT SO I CAN RECIEVE PAYMENT. PLEASE LEAVE FEEDBACK IT IS GREATLY APPRECIATED! GOAL OF 100% SATISFACTION. BONUS IS APPRECIATED!
John Mc (Offline) -- Ford Senior Master Technician -- 99% Positive Feedback on 660 Ford Accepts
15 years Ford Lincoln Mercury experience, 2006 Ford Ultimate Master Technician Challenge Finalist Your Reply
March 30 2009 at 9:35 PM (2 minutes and 42 seconds later)
Oh probably should ask this. What is the prefered method of removal. I know I have to remove all the hoses and since the plug will already be disconnected I will be good there. Should I use a car jack to keep the tank up so that I can unstrap it ? I have never tried to remove a 1/2 full tank...



Thank you,



Tony

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Answer
March 30 2009 at 9:39 PM (3 minutes and 46 seconds later) What should I do?
A mustang is pretty easy. First, on the passenger side take loose the 8mm bolt that holds the filler pipe in. Now disconnect the vent tube from that side also. Disconnect the line from the fuel filter, you will need a fuel line disconnect tool for this. Now put your jack under the tank. Remove the straps and lower the tank some. Take any other lines loose you still see connected. Let the tank down while pulling toward the drivers side so the tank will come off of the filler pipe. Now its out!




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IF THIS ANSWER IS HELPFUL PLEASE ACCEPT SO I CAN RECIEVE PAYMENT. PLEASE LEAVE FEEDBACK IT IS GREATLY APPRECIATED! GOAL OF 100% SATISFACTION. BONUS IS APPRECIATED!
John Mc (Offline) -- Ford Senior Master Technician -- 99% Positive Feedback on 660 Ford Accepts
15 years Ford Lincoln Mercury experience, 2006 Ford Ultimate Master Technician Challenge Finalist
Your Reply
March 30 2009 at 9:57 PM (18 minutes and 17 seconds later)
Ok thank you. Looks like I have my work cut out for me.. I mean finding a fule line removeer tool before I begin my removal... Can I fabricate a tool or is it just best to buy one and where can one be bought.



Thank you,



Tony

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March 31 2009 at 5:51 AM (7 hours and 53 minutes and 43 seconds later) What should I do?
gotta buy one, autozone has one that looks like scissors. Get that one.


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IF THIS ANSWER IS HELPFUL PLEASE ACCEPT SO I CAN RECIEVE PAYMENT. PLEASE LEAVE FEEDBACK IT IS GREATLY APPRECIATED! GOAL OF 100% SATISFACTION. BONUS IS APPRECIATED!
John Mc (Offline) -- Ford Senior Master Technician -- 99% Positive Feedback on 660 Ford Accepts
15 years Ford Lincoln Mercury experience, 2006 Ford Ultimate Master Technician Challenge Finalist
Your Reply
March 31 2009 at 10:07 PM (16 hours and 16 minutes and 26 seconds later)
thank you. I ended up going to pep boys twice today... I bought one that looked like scisors w/one end 5/16 and the other end 3/8 but I could not figure it out so I returned it and got these 4 anodized alluminum jobs for $19.99 :( but they did the trick. I have sifened some of the gas out about 3-4 gallons and now I am on my last bolt holding the tank in place and decided to stop for dinner and re asses the situation before I pull the last bolt. I think I'm gonna jack the car up and put it on jack stands. The only problem is the car is parked on a incline in my driveway. So I'm gonna have to chalk the front wheels and hope that the car does not roll when I jack the rear up for the jack stands...



I will let you know and keep you posted if it is in fact the pump.



Thank you,



Tony

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Your Reply
April 1 2009 at 8:08 PM (22 hours and 1 minute and 15 seconds later)
Hi John,



I finally got the tank off and the pump out. I tested the pump for continuity and tried to bang it a couple of times and hot wire it but it did not work. I guess it's safe to say it was the pump huh?



Do you know if I can buy just the pump or do I have to buy the whole pump and fuel guage assembly w/the pump.



I'm on a budget and trying to get through this by the skin of my teeth.



Thank you,



Tony

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Answer
April 1 2009 at 8:17 PM (8 minutes and 58 seconds later) ACCEPTED
Yes you can get just the pump from advance or autozone.


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IF THIS ANSWER IS HELPFUL PLEASE ACCEPT SO I CAN RECIEVE PAYMENT. PLEASE LEAVE FEEDBACK IT IS GREATLY APPRECIATED! GOAL OF 100% SATISFACTION. BONUS IS APPRECIATED!
John Mc (Offline) -- Ford Senior Master Technician -- 99% Positive Feedback on 660 Ford Accepts
15 years Ford Lincoln Mercury experience, 2006 Ford Ultimate Master Technician Challenge Finalist Your Reply
April 1 2009 at 8:20 PM (3 minutes and 3 seconds later)
Thank you I will call them now. I do appriciate all of this and for your patience. Don't worry I'm not gonna burn you on the credit. If this fixes the problem I will click on the accept is there a way to give you a bonus or something?



Thank you,



Tony

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April 1 2009 at 9:44 PM (1 hour and 23 minutes and 47 seconds later) What is this?
No problem, when you accept it asks if you want to give a bonus.



Thanks alot!

John Mc




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IF THIS ANSWER IS HELPFUL PLEASE ACCEPT SO I CAN RECIEVE PAYMENT. PLEASE LEAVE FEEDBACK IT IS GREATLY APPRECIATED! GOAL OF 100% SATISFACTION. BONUS IS APPRECIATED!
John Mc (Offline) -- Ford Senior Master Technician -- 99% Positive Feedback on 660 Ford Accepts
15 years Ford Lincoln Mercury experience, 2006 Ford Ultimate Master Technician Challenge Finalist Your Reply
April 2 2009 at 2:26 AM (4 hours and 41 minutes and 19 seconds later)
I primed the fule line by toggling the key several times and it only took like 3-5 cranks. She's alive once again.



Thank you,



Tony

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