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fuel pump / air in fuel line problem Question

Old 3/16/07, 10:52 AM
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fuel pump / air in fuel line problem Question

I was getting the air in the line/hesitation after a long cruise at speed problem but only experienced it a few times. I don't drive on the freeway for long distances often so I never really noticed it much.

I have a fuel tap off the fuel rail for my nitrous kit and off of that i have a fuel pressure sender.

Lately i've been getting odd readings on the pressure gauge from waht i assume is air in the fuel line that gets trapped in the fuel tap coming off the fuel rail.

Does anyone know if there is an aftermarket fuel pump (intank) that is a step up from stock that wont' cavitate like the stock one and thus put air in the fuel line.

I have a feeling it would be a bad thing to have air in the fuel line going to the nitrous solinoid when squeezing....

I've got too much on my car to justify taking it all off to go back for warrenty TSB for fuel pump.

I'm not removing all the gauges, nitrous equipment/switches etc... stuff that they would see.

thanks
jake
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Old 3/16/07, 02:46 PM
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Are You Aware

Sorry, I see you are aware of the TSB on the fuel pump issue. My engine is modded slightly with a CAI and long tube headers with catted X pipe and a tune. I went into the dealer and told them the symptoms I was experiencing along with the TSB number and with no more questions ordered a new fuel pump. The new pump isn't supposed to have the same problem. I'm scheduled to have it replaced next week. Hopefully, they won't start saying the tune or my mods are at fault but we'll see.
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Old 3/16/07, 07:00 PM
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I just had mine replaced this week - haven't had a chance to do a long cruise yet so will test it soon - probably this weekend. They also did the limited slip groan and THAT puppy is super quiet now.
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Old 3/18/07, 10:50 PM
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Originally Posted by ponyonfire View Post
Sorry, I see you are aware of the TSB on the fuel pump issue. My engine is modded slightly with a CAI and long tube headers with catted X pipe and a tune. I went into the dealer and told them the symptoms I was experiencing along with the TSB number and with no more questions ordered a new fuel pump. The new pump isn't supposed to have the same problem. I'm scheduled to have it replaced next week. Hopefully, they won't start saying the tune or my mods are at fault but we'll see.

eh.. with a nitrous kit they might give me problems.

I'd rather upgrade the pump to something in preparation for larger mods (i.e. supercharger)
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Old 3/19/07, 05:41 AM
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I took my wife's 06 V6 in 3 weeks ago for the Fuel Pump TSB. Took them all day driving the car with the laptop connected, before they would replace it. They just wouldn't take my word that it hesitated after a long cruise. Supposedly, their test driving was to rule out other stuff. Luckily the had the new version of fuel pump in stock. Took the technician about 20 minutes the replace it. They also reflashed the PCM. Anyhow, no more hesitation. I haven't experienced the hesitation on 05 GT. I don't want them trying to reflash the 05's PCM.
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Old 3/19/07, 06:36 AM
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Originally Posted by SoFL05GT View Post
I took my wife's 06 V6 in 3 weeks ago for the Fuel Pump TSB. Took them all day driving the car with the laptop connected, before they would replace it. They just wouldn't take my word that it hesitated after a long cruise. Supposedly, their test driving was to rule out other stuff. Luckily the had the new version of fuel pump in stock. Took the technician about 20 minutes the replace it. They also reflashed the PCM. Anyhow, no more hesitation. I haven't experienced the hesitation on 05 GT. I don't want them trying to reflash the 05's PCM.
Lemme guess - is that World Ford Pembroke Pines?
I wouldn't trust their service dept as far as I could throw that building - had a really bad experience with the Escort I used to have when I lived in Hollywood and wouldn't go back there for anything.

I just took the 06 into Delray Ford and has the fuel pump and milimted slip moan TSBs taken care of - so far, that's the only place I have had a positive service experience with. They drove the car for a few miles but of course, since the couldn't reproduce the exact long cruise conditions they just replaced it anyway. The limited slip moan is gone and haven't done a serious highway cruise to test the fuel pump yet but will next week.

I know it might be a HAUL for you but if you want a place you can trust, so far I would definitely say to check them out next time you have TSB issues.... I'll give you my guy's name there
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Old 3/19/07, 07:15 AM
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What to do?

The dealer was supposed to have ordered a new fuel pump this past Friday. When it arrives we're going to schedule an appointment. I'm thinking they'll first plug into the port to read the diagnostics and if they do that I'll have to return the car to stock tune first, right? The thing is, if I return the car to stock from the custom tune will that erase any error codes or will they remain? Also, could running on the stock tune damage my engine by running to lean? I have a K&N CAI that supposedly doesn't need a tune but coupled with the long tubes, I know it will be lean.
What do you recommend I do prior to bringing it in for service?
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Old 3/19/07, 07:26 AM
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Originally Posted by ponyonfire View Post
The dealer was supposed to have ordered a new fuel pump this past Friday. When it arrives we're going to schedule an appointment. I'm thinking they'll first plug into the port to read the diagnostics and if they do that I'll have to return the car to stock tune first, right? The thing is, if I return the car to stock from the custom tune will that erase any error codes or will they remain? Also, could running on the stock tune damage my engine by running to lean? I have a K&N CAI that supposedly doesn't need a tune but coupled with the long tubes, I know it will be lean.
What do you recommend I do prior to bringing it in for service?
If you are worried at all about your dealer, I would reflash to stock when you bring it in. The K&N is supposed to run fine without a custom tune so I wouldn't worry. If you are nervous just throw the stock airbox back on.

I also pulled the back seat bottoms so they could get right to the fuel pump area - one less thing for them to do to the car. Bring it in with a 1/4 tank of gas or less as well - if you have a full tank they will have to siphon some out.....
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Old 3/19/07, 06:24 PM
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My car actually experience this problem all weekend long. I have not taken any long drive since last summer before the rains and this weekend I was out driving and had it happen anytime i drove more than 30 miles at one time. There is suppose to be a service procedure that allows them to check without having to drive the car for 30 or more miles. I think that is absurd that they would have to put miles on my car that i would not put on. I am trying to get a copy of the procedure currently to see exactly what is needed to perform this test. I just left my dealership and have a appointment for next Monday as only two Tech are allowed to work on my car. The Service Writer even said he would not let anyone drive his car that long to determine the test so my hopes are the procedure is for none driving and that the IDS system can get it addressed without driving. The problem is It does not do it all the time so trying to duplicate the problem could be almost impossible. My suggestion would be to upgrade to the new version pump on your own or get the fuel pump for the GT500.

The new part number is 7R3Z-9H307-C

Richard
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Old 3/19/07, 07:58 PM
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Had my pump replaced at local ford dealer 6 mos ago. Several long trips since then with no problems.
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