XCharger stuttering/hesitation
03-31-2011, 10:34 AM
#1
1st Gear Member
Thread Starter
Join Date: Oct 2007
Location: TX
Posts: 69
XCharger stuttering/hesitation
I have a problem at high RPMs where my car is hesitating or stuttering. Sounds and feels like someone is pulsating the accelerator but the whole time I am WOT. Here is a clip:
http://www.youtube.com/watch?v=V9KfjKip3E0
Its tough to see since the camera shakes quite a bit but listen right at the 20 sec mark and you will hear it.
I noticed this when I went to get my car dyno’d back in January after I put on my XCharger. But I’m not completely sure the problem didn’t exist before I put the X on.
Since then I’ve swapped out spark plugs, decreased the gap from .35 to .30, and tried 3 separate tunes (1 from JDM and two from Dave/Doug and Explorer Express). I’m still working with Dave but we are looking for all the help we can get on this one.
Something of note…this problem occurs only in 3rd and 4th gear, not in 1st or second (haven’t been able to get up high enough to try 5th). And it only occurs or is most prominent if I gently roll into 1st and 2nd and the WOT in 3rd. If I WOT 1st, 2nd and then 3rd it doesn’t seem to happen or at least not as distinguishable as before.
Any help is greatly appreciated. Thanks
http://www.youtube.com/watch?v=V9KfjKip3E0
Its tough to see since the camera shakes quite a bit but listen right at the 20 sec mark and you will hear it.
I noticed this when I went to get my car dyno’d back in January after I put on my XCharger. But I’m not completely sure the problem didn’t exist before I put the X on.
Since then I’ve swapped out spark plugs, decreased the gap from .35 to .30, and tried 3 separate tunes (1 from JDM and two from Dave/Doug and Explorer Express). I’m still working with Dave but we are looking for all the help we can get on this one.
Something of note…this problem occurs only in 3rd and 4th gear, not in 1st or second (haven’t been able to get up high enough to try 5th). And it only occurs or is most prominent if I gently roll into 1st and 2nd and the WOT in 3rd. If I WOT 1st, 2nd and then 3rd it doesn’t seem to happen or at least not as distinguishable as before.
Any help is greatly appreciated. Thanks
03-31-2011, 11:36 AM
#2
4th Gear Member
Join Date: Jun 2006
Location:
Posts: 1,227
I have a problem at high RPMs where my car is hesitating or stuttering. Sounds and feels like someone is pulsating the accelerator but the whole time I am WOT. Here is a clip:
Its tough to see since the camera shakes quite a bit but listen right at the 20 sec mark and you will hear it.
I noticed this when I went to get my car dyno’d back in January after I put on my XCharger. But I’m not completely sure the problem didn’t exist before I put the X on.
Since then I’ve swapped out spark plugs, decreased the gap from .35 to .30, and tried 3 separate tunes (1 from JDM and two from Dave/Doug and Explorer Express). I’m still working with Dave but we are looking for all the help we can get on this one.
Something of note…this problem occurs only in 3rd and 4th gear, not in 1st or second (haven’t been able to get up high enough to try 5th). And it only occurs or is most prominent if I gently roll into 1st and 2nd and the WOT in 3rd. If I WOT 1st, 2nd and then 3rd it doesn’t seem to happen or at least not as distinguishable as before.
Any help is greatly appreciated. Thanks
Its tough to see since the camera shakes quite a bit but listen right at the 20 sec mark and you will hear it.
I noticed this when I went to get my car dyno’d back in January after I put on my XCharger. But I’m not completely sure the problem didn’t exist before I put the X on.
Since then I’ve swapped out spark plugs, decreased the gap from .35 to .30, and tried 3 separate tunes (1 from JDM and two from Dave/Doug and Explorer Express). I’m still working with Dave but we are looking for all the help we can get on this one.
Something of note…this problem occurs only in 3rd and 4th gear, not in 1st or second (haven’t been able to get up high enough to try 5th). And it only occurs or is most prominent if I gently roll into 1st and 2nd and the WOT in 3rd. If I WOT 1st, 2nd and then 3rd it doesn’t seem to happen or at least not as distinguishable as before.
Any help is greatly appreciated. Thanks
What's your AFR and fuel pressue when it happens?
03-31-2011, 03:47 PM
#5
1st Gear Member
Thread Starter
Join Date: Oct 2007
Location: TX
Posts: 69
Not sure what else we could tweak on the tune. I've already tried 3 different ones. I do have Interceptor gauges installed.
No AFR reading but the fuel pressure is steady throughout at 40 psi. I assumed 40 psi is the standard reading. Anyone have a different reading or is mine off?
I also thought about the injectors but I would think that a bad injector would present itself throughout the RPM band and not just at the high end or at least in every gear and not just 3rd and 4th.
But I'll discuss with Dave and see what we should tackle next.
Thanks for the input and keep it coming.
No AFR reading but the fuel pressure is steady throughout at 40 psi. I assumed 40 psi is the standard reading. Anyone have a different reading or is mine off?
I also thought about the injectors but I would think that a bad injector would present itself throughout the RPM band and not just at the high end or at least in every gear and not just 3rd and 4th.
But I'll discuss with Dave and see what we should tackle next.
Thanks for the input and keep it coming.
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rygenstormlocke
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2006, 99, gear, hesitation, hestitation, high, inhigh, issues, mustang, random, rpm, stutter, stuttering, taurus, xcharger
