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Need help diagnosing a problem!

4.6L (1996-2004 Modular) Mustang Technical discussions on 1996-2004 4.6 Liter Modular Motors (2V and 4V) within.

Need help diagnosing a problem!

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Old 07-23-2007, 01:08 PM
  #11  
leglocking101
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Join Date: Aug 2006
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Default RE: Need help diagnosing a problem!

I kind of had a similar issue with my stang just a little bit ago. I noticed that my car would kind of buck at low rps when lightly accelorating.

It turned out ot be a crakced intake manifold. Whole thing had to get replaced. Apparently this was some kind of "recall" with ford. Well it wasnt a typical recall. The shop said that if it woudl have been reported within a certain mount of years after the car was made that ford would have replaced it, however sine I had jsut reported mine this year (my car is a 1999 GT) that I had to pay for it. Luckily I had a third party warrenty.

Get the intake manifold checked. I let mine go so long that when the crack got bad enough It was shooting collant all over the engine and the car overheated.
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Old 07-23-2007, 02:55 PM
  #12  
Dan04COBRA
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Default RE: Need help diagnosing a problem!

Mustangs generally have a 'loose' feeling drivetrain, a lot of clunks and thunks are normal as long as everythign is in order.

I found a new polyurethane transmission mount really tightened the drivetrain in my 02 GT when I had the same problem.

When the MIL's failed on my 02 GT, when I would start it on occasion it would sound like it was rising from the dead very slow exactly like you described....I don't know why they would do that, but once I replaced them it never happened again.

I wouldn't worry about your fuel pump.
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Old 07-23-2007, 03:20 PM
  #13  
HamMach1
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Default RE: Need help diagnosing a problem!

ORIGINAL: Dan04COBRA

Mustangs generally have a 'loose' feeling drivetrain, a lot of clunks and thunks are normal as long as everythign is in order.

I found a new polyurethane transmission mount really tightened the drivetrain in my 02 GT when I had the same problem.

When the MIL's failed on my 02 GT, when I would start it on occasion it would sound like it was rising from the dead very slow exactly like you described....I don't know why they would do that, but once I replaced them it never happened again.

I wouldn't worry about your fuel pump.
HMmm so maybe I could just check my MIL's? The rising-from-the-dead start-up has gotten alot worse.
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