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  • SN95 4.6L Mustang Tech

Engine Hesitates To Start.

  • Thread starter Thread starter Jacob4450
  • Start date Start date Jul 21, 2013

Jacob4450

New Member
May 20, 2013
12
1
4
Las Vegas, Nevada
Jul 21, 2013
#1
  • Jul 21, 2013
  • #1
Hi I have a 99 Mustang GT and my car seems to have trouble starting after i drive to a couple places like if i have some errands to do. And as soon as i start it it starts and immediately sounds like its gonna die it's like it's hesitating. The last 2 times with in 2 months it died when starting up. I really want to figure out what is causing this. Some people were trying to tell me its because of this Las Vegas heat but i doubt.
 

wmburns

SN Certified Technician
Aug 14, 2009
5,892
514
204
Houston Texas
Jul 21, 2013
#2
  • Jul 21, 2013
  • #2
How does the car drive otherwise?

Try this. Cycle the key multiple times on/pause/off without cranking. Listen for the fuel pump to run each time. Does this improve starting? If so, suspect fuel pressure leak down or a weak fuel pump.
 

Jacob4450

New Member
May 20, 2013
12
1
4
Las Vegas, Nevada
Jul 21, 2013
#3
  • Jul 21, 2013
  • #3
wmburns said:
How does the car drive otherwise?

Try this. Cycle the key multiple times on/pause/off without cranking. Listen for the fuel pump to run each time. Does this improve starting? If so, suspect fuel pressure leak down or a weak fuel pump.
Click to expand...

Once it starts the car drives like a dream. Ill try cycling the key a few times and listen for the pump the next time i go out and will let you know.
 

sethahoward

Member
Dec 21, 2011
34
4
19
Somerset Pa
Jul 22, 2013
#4
  • Jul 22, 2013
  • #4
It must be red GT's, mine does the same thing. Nice looking car by the way.
 

jetmech807

10 Year Member
Dec 1, 2011
1,195
326
164
Crestview, FL
Jul 22, 2013
#5
  • Jul 22, 2013
  • #5
Mine just takes a couple extra seconds of cranking to start once in a great while. Once every 2 months or so.
 

Jacob4450

New Member
May 20, 2013
12
1
4
Las Vegas, Nevada
Aug 9, 2013
#6
  • Aug 9, 2013
  • #6
Ok guys I fixed the problem drum roll please................IT WAS THE GOD DAMN FUEL FILTER!!!!!!!!! Now it starts up instantly and doesn't stall anymore.
 

PerformanceRed35th

Member
Sep 26, 2013
7
2
14
Broken Arrow, OK
Sep 26, 2013
#7
  • Sep 26, 2013
  • #7
That sounds a lot like the idle air-control valve. My car would start and hesitate for a bit, then fire up. When I would clutch in the RPMs would drop very low (caused it to die a few times actually). I figured I'd replace that before the fuel filter, and it fixed it. Glad you solved the problem though!
 
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