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

Engine (?) is stuttering

Old Jul 21, 2020 | 12:10 PM
  #1  
ScraTTrZ's Avatar
ScraTTrZ
Thread Starter
 
Joined: Jul 2020
Posts: 1
From: Switzerland
Default Engine (?) is stuttering

Good evening (Switzerland time...) together

First, I am very sorry about my bad English, I am sorry for that. Please ask me if you didn't understand anything...

I got a 2007 GT (imported) since 3 years, 84k miles, car services has been done according to the service manual (yes, everytime). I never had problems with the car since now.
When I drive the car with cold engine I have absolutly no problems. But when the engine is warm I got a ratteling sound from the engine (?) or from the exhaust when I am at lower speeds an hit the gas pedal shortly. I can't comprehend where the sounds comes from.

Description:
- When the engine is warm and I hit the gas pedal shortly in low rotational speed (like < 60km/h == 37miles / h)
- On the highway or streets with more than 37 m/h I have no problems
- Engine stutters when I have to stop at a red light or when I want to park
- When the engine stutters and the car has been turned off I can restart it without problems or anoying sounds

On my list to check is
- Fuel pump
- Oil pump
- Coil Packs
- Vacuum leak

Any more ideas?


Best regards,
Marco from Switzerland
Old Jul 22, 2020 | 08:57 AM
  #2  
Benni614's Avatar
Benni614
1st Gear Member
 
Joined: Nov 2019
Posts: 91
From: DE
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Hey and wow Switzerland thats amazing I was deployed there such an amazing experience.
OK. The easiest thing is to go back over the things that typically c a use this issue.
Check and clean the mad but be careful with this, of the wire is broke u need a new one.
check the tps sensor?
check the iac ?
send or post a video when you can of the issue
Old Jul 22, 2020 | 09:21 AM
  #3  
delling3's Avatar
delling3
1st Gear Member
 
Joined: Jul 2018
Posts: 71
From: Michigan
Default

If you have a 2007 Mustang GT, your car has a 3-valve Modular V-8. This section of the forum is specific to the 1996 - 2004 years, which have either a 2-valve motor, or in some cases a 4-valve motor. Not saying you won't get good advice here, but you may get more specific information if you post here: https://mustangforums.com/forum/2005-2014-mustangs-43/

Good Luck with your issue.
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