engine chockes
08-20-2007, 02:42 PM
#1
Thread Starter
Join Date: Jun 2007
Posts: 5
engine chockes
I have a 2005 GT auto and I have noticed that sometimes when I punch the gas it kind of chokes for a second, anyone know what could cause this. I have a FR1 power pack installed, but I am sure it did this once or twice before it was added.
Thanks Gordie
Thanks Gordie
08-21-2007, 09:22 AM
#2
Multi-Tasking Moderator!
Join Date: Nov 2006
Location: Detroit Rock City!
Posts: 15,618
RE: engine chockes
Sounds like the drive by wire system! It is a bitch and needs to be tuned for crisper and sharper throttle response. You are not alone and I think from what you are describing that it has nothing to do with the suspension setup. If you have a canned tune than I would advise getting a dyno tune from a reputable installer/mechanic and see if it improves the throttle response. Welcome to the forum!
08-21-2007, 02:53 PM
#3
The Paranoid One
Join Date: Apr 2006
Location: Texas
Posts: 5,320
RE: engine chockes
Do you notice the choke at a certain gear and rpm?
Are you SURE you aren't losing traction for a second?
On mine... I notice that if I am above 3000 rpm... say 3500-4000 and I punch it... it seems like it chokes for a sec.. only in that gear..
but I am all stock.. and I will see a traction light sometimes when I do this... NOT everytime but alot.
Whats funny is that usually when I turn the TCS OFF it does not do this... (funny since TCS should make it better in theory I'd think)
I am still trying to figure out myself for sure if it is traction, or what the hell it is...
Any clues guys?
Are you SURE you aren't losing traction for a second?
On mine... I notice that if I am above 3000 rpm... say 3500-4000 and I punch it... it seems like it chokes for a sec.. only in that gear..
but I am all stock.. and I will see a traction light sometimes when I do this... NOT everytime but alot.
Whats funny is that usually when I turn the TCS OFF it does not do this... (funny since TCS should make it better in theory I'd think)
I am still trying to figure out myself for sure if it is traction, or what the hell it is...
Any clues guys?
08-21-2007, 04:51 PM
#4
Thread Starter
Join Date: Jun 2007
Posts: 5
RE: engine chokes
Thanks to both of you for your replies, I will describe some of my experiences to give you a better idea of my problem.
Once I was pulling out into traffic from a side street and when I punched it it was almost like it was going to stall.
Another time I was at a 4 way stop and when it was my turn to go I again punched it and the same.almost a stall, then it would go.
I didn't have the TC off either time, just punched it hard.
Also the only tune I have is the one that comes with the FR1 kit from Ford Racing.
I have an auto and usually turn the overdrive off when I want to go fast, is that a good idea?
Flash233
2005 Mustang GT
Once I was pulling out into traffic from a side street and when I punched it it was almost like it was going to stall.
Another time I was at a 4 way stop and when it was my turn to go I again punched it and the same.almost a stall, then it would go.
I didn't have the TC off either time, just punched it hard.
Also the only tune I have is the one that comes with the FR1 kit from Ford Racing.
I have an auto and usually turn the overdrive off when I want to go fast, is that a good idea?
Flash233
2005 Mustang GT
08-22-2007, 06:14 AM
#5
Multi-Tasking Moderator!
Join Date: Nov 2006
Location: Detroit Rock City!
Posts: 15,618
RE: engine chokes
Turning OD off should not hurt the car at all. Turn the TC off every time you get in the car. I think if you had a custom tune it can be turned off indefinitely by the handheld tuner....I think. Its either the TC not off like the other poster described or your tune which I doubt now that you said the TC is on when this happens.
08-22-2007, 10:11 AM
#9
4th Gear Member
Join Date: Nov 2006
Location: State Of Confusion
Posts: 1,199
RE: engine chokes
Hmm, sounds like it's leaning out. You say it's choking but that means that it would be getting too much fuel and not enough air.
The TCS is designed to cut power when the rear end breaks lose.
If it's still leaning out even when the TCS is turned off, you are experiencing a lean condition.
The program that controls the air fuel mixture during acceleration (fuel curve) is not set up correctly or the computer is being fed incorrect data due perhaps to a faulty Mass Air Flow sensor or you could have an undetected vacuum leak.
You say your car is all stock yet it has an FR1 perf. package which is only good for 20HP or so.
It has a different MAF sensor, higher flow air cleaner and mufflers.
Check all your connections. The new MAF sensor connector, the crank case ventaliation line, vacuum lines etc. Make sure everything is installed correctly.
If that doesn't cure your problem, I suggest you take it to your dealer and explain what's going on and have them run a diagnostic on it. Or you can take it to your near by Mustang hot rod shop and have them put her on a dyno to track exactly what's going on under load.
Sure sounds like she's leaning out to me.
It is also possible that the TCS is not disengaging when turned off.
I don't know if TCS cut out is standard on your pony as I don't know what year it is. I know it's standard on '07's and up. However, the TCS is only going to engage if she breaks lose. At least that's the only time it's supposed to work.
Could be a glitch in the FR1 program too and perhaps there is an updated program for it from Ford.
Hope this helps!
Wolfey2k
The TCS is designed to cut power when the rear end breaks lose.
If it's still leaning out even when the TCS is turned off, you are experiencing a lean condition.
The program that controls the air fuel mixture during acceleration (fuel curve) is not set up correctly or the computer is being fed incorrect data due perhaps to a faulty Mass Air Flow sensor or you could have an undetected vacuum leak.
You say your car is all stock yet it has an FR1 perf. package which is only good for 20HP or so.
It has a different MAF sensor, higher flow air cleaner and mufflers.
Check all your connections. The new MAF sensor connector, the crank case ventaliation line, vacuum lines etc. Make sure everything is installed correctly.
If that doesn't cure your problem, I suggest you take it to your dealer and explain what's going on and have them run a diagnostic on it. Or you can take it to your near by Mustang hot rod shop and have them put her on a dyno to track exactly what's going on under load.
Sure sounds like she's leaning out to me.
It is also possible that the TCS is not disengaging when turned off.
I don't know if TCS cut out is standard on your pony as I don't know what year it is. I know it's standard on '07's and up. However, the TCS is only going to engage if she breaks lose. At least that's the only time it's supposed to work.
Could be a glitch in the FR1 program too and perhaps there is an updated program for it from Ford.
Hope this helps!
Wolfey2k
08-22-2007, 10:52 AM
#10
The Paranoid One
Join Date: Apr 2006
Location: Texas
Posts: 5,320
RE: engine chokes
Your miss reading posts... his has the pack on it... mine is all stock and only seems to do it with the TCS on....
and does it when I punch it in second gear from about 3.5 RPMs and up with a full punch to the floor.
You are reading two different people's postings.
That's why i was asking if it was normal for it to do this when TCS is on.
Mine is an 06GT.
and does it when I punch it in second gear from about 3.5 RPMs and up with a full punch to the floor.
You are reading two different people's postings.
That's why i was asking if it was normal for it to do this when TCS is on.
Mine is an 06GT.