• Mustang Forums
  • 1996 - 2004 SN95 Mustang -General/Talk-
  • SN95 4.6L Mustang Tech

Idle Speed, Drivetrain shunt.

  • Thread starter Thread starter sport_160
  • Start date Start date Jun 2, 2004
S

sport_160

New Member
Apr 2, 2004
5
0
0
Seattle
Jun 2, 2004
#1
  • Jun 2, 2004
  • #1
Hi guys,

I just bough a 2002 GT and have been having it fun with it, but I have a question regarding idle speed. It is the only GT I have driven, so I don't know if they are all like this or just mine.

1. When coming to a stop, say in second gear, and dipped the clutch before coming to a complete stop, the RPM's will remain at about 1000 for 2 seconds after I have come to a complete stop and then drop back to 750'ish. Is this normal?

2. Rolling along in first gear, there is noticeable driveline shunt when trying to accelerate.

3. Between gear changes it takes ages for the RPM's to die down.

4. Even when in gear at speed and you take your foot off the throttle, after a couple of seconds, you can feel the car slow down more.

It seems to me like the engine is being over fueled. As far as I know the car is completely stock apart from an aftermarket X pipe.

If they all do this, then I won't worry about it, but otherwise is there something I should be looking for?

Thanks,
sport_160
 

hotmustang331

Active Member
Apr 29, 2004
2,967
3
48
Bastrop,TX
Jun 2, 2004
#2
  • Jun 2, 2004
  • #2
Mine does basically the same thing, especially the part about it taking a second or two for the speed to come down after I let off the gas,I just look at it as a way to save a little gas LOL...I hope.So yea I would say that it is normal...also does your car seem to run better sometimes than others?I shot it off sometimes while driving and turn it back on, sometimes it helps (especially in my dads 00 V6) I think, but its more noticable when you drive it on different days, probably the air temp. but sometimes it seems to loos power or be rougher when I have the A/C on then turn it off for a little fun, but seems slower still.And when the a/c on it feels almost as fast as the V6 LOL, it must take alot out of it.Also i wonder if it is better to run it on MAX a/c or regular, the CD I got with the car said that the MAX A/C was more efficient...but who knows.
 

Premium Speed

New Member
Apr 22, 2003
1,006
0
0
Houston, Texas
Jun 3, 2004
#3
  • Jun 3, 2004
  • #3
sport_160 said:
Hi guys,

I just bough a 2002 GT and have been having it fun with it, but I have a question regarding idle speed. It is the only GT I have driven, so I don't know if they are all like this or just mine.

1. When coming to a stop, say in second gear, and dipped the clutch before coming to a complete stop, the RPM's will remain at about 1000 for 2 seconds after I have come to a complete stop and then drop back to 750'ish. Is this normal?

2. Rolling along in first gear, there is noticeable driveline shunt when trying to accelerate.

3. Between gear changes it takes ages for the RPM's to die down.

4. Even when in gear at speed and you take your foot off the throttle, after a couple of seconds, you can feel the car slow down more.

It seems to me like the engine is being over fueled. As far as I know the car is completely stock apart from an aftermarket X pipe.

If they all do this, then I won't worry about it, but otherwise is there something I should be looking for?

Thanks,
sport_160
Click to expand...


1 - normal

2 - normal drivetrain slack

3 - normal

4 - the car should slow down when you let off the throttle

the 4.6 does run a little rich from the factory...just like most vehicles
 
S

sport_160

New Member
Apr 2, 2004
5
0
0
Seattle
Jun 3, 2004
#4
  • Jun 3, 2004
  • #4
That's good to know. I thought it might be normal.

Is there a way to improve the running of the car? Would using a chip make it run less rich?

sport_160
 

Dark Knight GT

I can't get it up......ok that didn't sound right.
May 26, 2003
3,653
2
56
Ozark, Missouri
Jun 3, 2004
#5
  • Jun 3, 2004
  • #5
sport_160 said:
That's good to know. I thought it might be normal.

Is there a way to improve the running of the car? Would using a chip make it run less rich?

sport_160
Click to expand...

Yeah, get some 4.10's, aftermarket shifter, and a sport chip. That should take care of most of the problems you're having.
 
You must log in or register to reply here.

Similar threads

S
1998 Mustang Gt Rattling sound, cannot locate. Video included
  • studerman1
  • Mar 31, 2026
  • 1996 - 2004 SN95 Mustang -General/Talk-
Replies
8
Views
186
1996 - 2004 SN95 Mustang -General/Talk- Apr 1, 2026
studerman1
S
P
2000 GT Random Power Loss
  • Pinellas50
  • Mar 9, 2026
  • SN95 4.6L Mustang Tech
Replies
4
Views
263
SN95 4.6L Mustang Tech Mar 23, 2026
Pinellas50
P
S
Engine Stalls when downshifting/coasting
  • Scott_S
  • Nov 5, 2025
  • Fox 5.0 Mustang Tech
Replies
11
Views
670
Fox 5.0 Mustang Tech Nov 6, 2025
Mustang5L5
B
More Issues With New Edge
  • Blackout67
  • May 3, 2025
  • 1996 - 2004 SN95 Mustang -General/Talk-
  • 2
Replies
22
Views
740
1996 - 2004 SN95 Mustang -General/Talk- May 11, 2025
Blackout67
B
K
Procharger Stage 2 - 2013 Mustang GT Minor Hiccups
  • KHills5058
  • Oct 9, 2025
  • 2010 - 2014 Specific Tech
Replies
0
Views
126
2010 - 2014 Specific Tech Oct 9, 2025
KHills5058
K
Share:
Bluesky Email Share Link
  • Mustang Forums
  • 1996 - 2004 SN95 Mustang -General/Talk-
  • SN95 4.6L Mustang Tech
Menu
Log in

Register

  • Forums
  • What's new
  • Media
  • Resources
  • Contact
  • Sponsor
X

Privacy & Transparency

We use cookies and similar technologies for the following purposes:

  • Personalized ads and content
  • Content measurement and audience insights

Do you accept cookies and these technologies?

X

Privacy & Transparency

We use cookies and similar technologies for the following purposes:

  • Personalized ads and content
  • Content measurement and audience insights

Do you accept cookies and these technologies?