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

hard startup, fuel pump?

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Old 10-29-2006, 08:10 PM
  #1  
jslobig
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Default hard startup, fuel pump?

okay, here's one for the seasoned vets. i changed my wires and plugs a week ago, got stock plugs and frpp wires. everything was going great for two days, ran the best since i've had it. i flew to atl for business all last week. when i flew back home friday night and started my car at the airport, it didn't start right up. it took a 4 second crank to get it going. wierd, huh? anyway, it ran fine that night and- every morning since then, it takes a few seconds to get going. once it has been running, it starts up fine, but when it sits for more than 2 hours, it happens again. i checked the battery charge and it's holding a good charge under load. someone told me that it could be the fuel pump.

bless me with your expertise. where's the fuel pump even located? does anyone have a straight up diagram of the 98 gt engine compartment?. i don't have the stock manual. i know i should get the haynes manual, and i will tomorrow morning. any ideas as to what might be going on? i doubt it has to do with the wires or plugs, but.....
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Old 10-29-2006, 11:01 PM
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jslobig
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Default RE: hard startup, fuel pump?

bump. come on, no suggestions? help me out.
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Old 10-29-2006, 11:18 PM
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droptoppony
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Default RE: hard startup, fuel pump?

your fuel pump is in the fuel tank under the trunk...

To me it sounds like your IAC is starting to stick. Try removing it and tapping the gunk out and clean with carb cleaner.
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Old 11-04-2006, 10:24 AM
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Default RE: hard startup, fuel pump?

My 2001 did the same thing. Turned out to be the IAC valve. It was covered by warranty, but the invoice shows the part costs $102. Worth a shot at cleaning it to save $102.
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