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Just got a 2004 GT

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Old 04-11-2012, 10:00 PM   #1
Photoshopeth
 
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Default Just got a 2004 GT

I just traded in my 2000 V6 towards a 30k mile excellent condition 04 GT today.

I'm having them replace the hood insulator pad which is strangely shredded, but underhood looks perfect otherwise (broken serpentine in the past?)

One thing that I have an issue with is, I hear a sucking/hissing noise when the engine is running, inside the car, kinda like the sound when you turn the a/c dials when the car is off, but happens even when air is off. Service couldn't figure it out, said it was probably caused by magnaflow mufflers. It has a k&n drop in but it still has stock silencer.

My last issue is, if I have the mach 460 on, engine off, while low volume/muted/quiet part, I hear a low thumping drone, and a low wind like roaring coming from the back, but it dramatically goes away a few seconds after you shut the system off, or music gets louder.

GT next to my first car of 6 years and 64,000 miles
Click the image to open in full size.


It has Mach 1 grille delete and chin spoiler already on it.
Click the image to open in full size.


Can't wait to load a Bama tune onto it.
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Last edited by Photoshopeth; 04-11-2012 at 10:11 PM.
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Old 04-11-2012, 11:08 PM   #2
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Re: the Mach 460, there is a shielded audio line that runs along the outer driver's side footwell--and which has a connector known to get crapped up and electrically "noisy". Bang your foot as flatly as you can just aft of the dead pedal and see if the noise changes/goes away. If it does than that connector C264 is corroded and needs to be cleaned (or eliminated, take it out and solder the wires).

Click the image to open in full size.

There should not be any sucking/hissing sound in the cabin, and have never heard a muffler create such a sound--make sure all the HVAC controls (all the airflow directional motors are vacuum operated) are working as they should...
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Old 04-12-2012, 01:51 AM   #3
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Congrats on the upgrade! It looks good! I can't give any better advise than cliffyk did there, just wanted to say 'good for you'...
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Old 04-12-2012, 08:50 AM   #4
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Nice looking car, and welcome to the forums! Take cliffyk's advice, he know's what he's talking about.
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Old 04-12-2012, 11:01 AM   #5
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car looks good! be careful with the new power!
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Old 04-18-2012, 06:51 PM   #6
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Thanks guys, I noticed it has the original battery, date code is 3k, which I think would make it October 2003. I read somewhere else that the mach 460 noise went away after changing the battery, although it still starts strong.

I think the hissing noise may be coming from the hydroboost, as it changes in volume as I push the brake pedal, and quiets down when warm.

Also just today as I was loading my 93 Bama tune, I noticed the driver power window randomly wouldn't go down, I've used it several times since I bought it, but it kept clicking. I went back a bit ago and it's working perfectly again. So not sure what's going on with it.

Other than that I'm quite happy with it, the dealer replaced the rodent chewed hood insulator pad with a nice fresh one.

Click the image to open in full size.

Last edited by Photoshopeth; 04-18-2012 at 07:00 PM.
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Old 04-18-2012, 08:17 PM   #7
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Congrats on the ride!
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Old 04-18-2012, 08:22 PM   #8
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Congrats on the ride and GL with it.What kind of mods are you planning to do?
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Old 04-18-2012, 08:27 PM   #9
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Congratulations. Sweet Ride indeed. I just got my next project car this past weekend as well. Bought it out right because it is a real project but it should be ready by mustang week in SC. <br>Click the image to open in full size.<br><br>THe car was a driving fire hazard. That is only the start of getting it back to stock electrical wise. TKO and twin disk coming this weekend while I wait for the strange rear components to come. I got the 4:10's before I had the car. I'll have a full write up and photo shoot of the garbage people did to the poor girl before I gut her out. It was so bad, I would press the brakes and strobe lights would come on. FSCKIN REALLY
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Old 04-19-2012, 10:16 AM   #10
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Quote:
Originally Posted by jeh4269 View Post
Congrats on the ride and GL with it.What kind of mods are you planning to do?
Well I want it to mainly stay stock, probably one of the only visual mods will be bumper inserts. Can't make up my mind if I want them in red (matches taillights/reflectors) or AM's stainless steel (matches emblems/calipers)

Next probably a K&N or Airraid intake. Although I've always been a flowmaster guy, I'm really happy with the sound of the Magnaflow's it has on it, so I'll probably keep them.

Maybe someday far down the road, I'll install a mach 1 style cdc shaker scoop.
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Old 04-19-2012, 04:47 PM   #11
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Congrats! Nice looking ride!
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Old 04-20-2012, 10:05 AM   #12
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Congrats! Good looking car!
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Old 04-21-2012, 08:34 AM   #13
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Quote:
Originally Posted by Photoshopeth View Post
Thanks guys, I noticed it has the original battery, date code is 3k, which I think would make it October 2003. I read somewhere else that the mach 460 noise went away after changing the battery, although it still starts strong.

I think the hissing noise may be coming from the hydroboost, as it changes in volume as I push the brake pedal, and quiets down when warm.

Also just today as I was loading my 93 Bama tune, I noticed the driver power window randomly wouldn't go down, I've used it several times since I bought it, but it kept clicking. I went back a bit ago and it's working perfectly again. So not sure what's going on with it.

Other than that I'm quite happy with it, the dealer replaced the rodent chewed hood insulator pad with a nice fresh one.

Click the image to open in full size.
FINALLY! Someone who knows what I went through 2 years ago. My window did the same thing after installing my 93Tune and randomly stopped. I don't know what it is about those Bama tunes, but it's gotta go hand in hand.
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Old 04-21-2012, 08:41 AM   #14
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Congrats bro
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Old 04-21-2012, 09:04 AM   #15
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The window would have nothing to do with the tune, it's directly wired in, mine do that occassionally, just randomly won't go down, after a few seconds they will go. I think it has something to do with the switches but I haven't really looked into it
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Old 04-21-2012, 09:49 AM   #16
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Quote:
Originally Posted by MustangHEMIguy View Post
FINALLY! Someone who knows what I went through 2 years ago. My window did the same thing after installing my 93Tune and randomly stopped. I don't know what it is about those Bama tunes, but it's gotta go hand in hand.
Yeah the tune wouldn't effect the window, I was just trying to vent the car while waiting for the tune to load is all. I washed the car a day earlier maybe water got into the system.

One question I have is I need to replace the weatherstripping that runs up the driver door mirror area, as I hear a bunch of wind noise and water comes through in a laser wash. My v6 leaked on the passenger side, so I probably didn't notice wind noise as much. What kind of weatherstripping would this be considered, I can't really tell by looking at LMR or Ford Parts.

Last edited by Photoshopeth; 04-21-2012 at 09:51 AM.
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Old 04-21-2012, 10:05 AM   #17
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The driver's side window "one-touch down" feature is controlled by the GEM (Generic Electronic Module). The GEM has no connection to the PCM, either directly or through the SCP bus, so a tune could not affect it's operation.

However flashing a tune with an ill-behaved flash tool could make the driver's side window, and perhaps other GEM controlled functions go goofy--here's why.

The GEM can be communicated with through the DLC (Data Link Connector, aka OBD2 port) on pin 7, the ISO-9141 protocol K-line.

Click the image to open in full size.

The K-line supports bi-directional communication, so if the tuning tool were outputting a signal on pin 7 of the DLC, intended or random, it could cause the GEM to behave oddly ("goofy" being the technical term)--while the flash tool is connected. Once it has been unplugged from the DLC the GEM's ISO line is just floating, connected to nothing else.

Note in the above diagram that the RCM and ABS modules can also be communicated via the ISO-9141 protocol; this is possible because each module has it's own unique and addressable ID.

===========================================
Also, OP, you should never operate anything electrical while flashing a tune as the tuning tool must supply 18V to pin 13 of the DLC while loading the tune. It does this by a "charge pump" DC-to-DC converter make 18V from 12V. These converters can be temperamental with regard to their input voltage and the last thing you want is for that 18V level to drop while flashing the PCM.
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Delta Force tuned, Steeda UDPs, Ralco flywheel,
RAM HDX clutch, 3.73s, 262 rwHP/305 lb-ft.

New ride (7/1/2013) 1998 Mercedes SL500-5.0L 32V VVT 326/347 HP/tq


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Old 04-21-2012, 11:06 PM   #18
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Very nice ride. Hopefully no mice chewed into the wiring or vacuum lines. Big upgrade for sure!
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Old 04-25-2012, 06:28 PM   #19
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I'm in shock, about two hours ago, an illegal immigrant slammed into the back of me, didn't have license or insurance. Bumper, exhaust pipe and bumper foam is going to need replaced. I've had it for 2 weeks, FML

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Old 04-25-2012, 06:39 PM   #20
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Ain't that a bit**! Are you getting any kind of compensation??
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Old 04-25-2012, 06:39 PM
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