Bad hesitation on W.O.T acceleration
06-30-2008, 05:17 PM
#31
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Join Date: Apr 2007
Location: The High Country
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RE: Bad hesitation on W.O.T acceleration
ORIGINAL: Nuke
The few times (3 or 4, I think) I had it happen with my manual, the engine did NOT rev up when I downshifted and tried to go WOT. It just did nothing for an instant and then slowly wound up. I've tried to duplicate it on many occasions but w/ the TCS off. Perhaps I'll see if I can get it to happen with the TCS on. I'm still putting my $$ on the fuel pump issue.
The few times (3 or 4, I think) I had it happen with my manual, the engine did NOT rev up when I downshifted and tried to go WOT. It just did nothing for an instant and then slowly wound up. I've tried to duplicate it on many occasions but w/ the TCS off. Perhaps I'll see if I can get it to happen with the TCS on. I'm still putting my $$ on the fuel pump issue.
Your hesitation may be something else. This is completely a different issue that the shudder during a rev limiter shutdown. In an auto, the rpm's climb higher than the redline, and it cuts out. In mine, if I don't let off the gas, or slightly pump the gas pedal, it will cut out. The pedal pomping like I do allows the tranny to go ahead and shift into 5th.
06-30-2008, 05:18 PM
#32
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Join Date: Apr 2007
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RE: Bad hesitation on W.O.T acceleration
ORIGINAL: MikeD916
Ok so this just happened to me for the first time. I have a 5 speed manual. Was driving down the highway at normal speeds and getting off the highway. Whenexiting the offrampI saw the light turning red ahead so I sped up a little to beat the light and as I was swerving left (was completely in 3rd grear with foot off the clutch)I received a huge jolt as the car hesitated. I mean it felt like the transmission dropped out of the car. Scared the crap out of me.
Just wanted to provide some of my own experience.
Ok so this just happened to me for the first time. I have a 5 speed manual. Was driving down the highway at normal speeds and getting off the highway. Whenexiting the offrampI saw the light turning red ahead so I sped up a little to beat the light and as I was swerving left (was completely in 3rd grear with foot off the clutch)I received a huge jolt as the car hesitated. I mean it felt like the transmission dropped out of the car. Scared the crap out of me.
Just wanted to provide some of my own experience.
It really makes no difference what type a tranny you have. It is the revs that matter.
06-30-2008, 09:04 PM
#33
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Join Date: Aug 2007
Location: Lakeland/Mulberry FL
Posts: 2,263
RE: Bad hesitation on W.O.T acceleration
ORIGINAL: GidyupGo
The OP said it did it at WOT when the tranny downshifted. That is the time when the rpm's spike and it does indeed bounce off the rev limiter.
ORIGINAL: one eyed *****
thats not true at all,it does it before the revs even get close to the limiter,its almost instant,soon as you hit the gas after cruising for a bit.
i have an 07, the TSB does not cover the 07 is what the dealer told me,lol,he wants to get a guy to ride around in my car and diagnose the problem,lol,yeah right. im calling monday to bitch at the service manager for wasting my time. he tried to also blame it on my tuner,just got the tuner a month ago,its been doing it since i bought the car,said he would still fix it for me and let me know how much it was going to cost me,lol.idiots!
i have a 5 speed
its happened to me about 5 times maybe in 6700 miles
happens when i get on it after cruising,not every time,just sometimes
from what ive been told,air pockets build up in the pump, then when you try and go,that pocket gets pushed through the pump and car falls on its face.
if i knew how the techs at the dealership fix it i would just do it my self.
ORIGINAL: GidyupGo
People, what is happening is you have that instant spike in revs and your rev limiter is kicking in. It's not the throttle
and it's not the TC.
People, what is happening is you have that instant spike in revs and your rev limiter is kicking in. It's not the throttle
and it's not the TC.
i have an 07, the TSB does not cover the 07 is what the dealer told me,lol,he wants to get a guy to ride around in my car and diagnose the problem,lol,yeah right. im calling monday to bitch at the service manager for wasting my time. he tried to also blame it on my tuner,just got the tuner a month ago,its been doing it since i bought the car,said he would still fix it for me and let me know how much it was going to cost me,lol.idiots!
i have a 5 speed
its happened to me about 5 times maybe in 6700 miles
happens when i get on it after cruising,not every time,just sometimes
from what ive been told,air pockets build up in the pump, then when you try and go,that pocket gets pushed through the pump and car falls on its face.
if i knew how the techs at the dealership fix it i would just do it my self.
The OP said it did it at WOT when the tranny downshifted. That is the time when the rpm's spike and it does indeed bounce off the rev limiter.
06-30-2008, 09:33 PM
#34
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Join Date: Apr 2007
Location: The High Country
Posts: 3,547
RE: Bad hesitation on W.O.T acceleration
Like I said, IT'S THE REV LIMITER!!!. Sorry, had to say that. LMFAO. I am speaking to the OP. That is his issue. Yours like you said may be different since your car can't even GET to the redline. I wish you could go back in time to the rev limiter discussion we had last year. Not that it is what is going on in your car.
When you hyjack someones thread and make it your own, don't expect all the answers to apply to your specific issue. They seldom are the same and as a result, the solutions are different too.
When you hyjack someones thread and make it your own, don't expect all the answers to apply to your specific issue. They seldom are the same and as a result, the solutions are different too.
06-30-2008, 10:31 PM
#36
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Join Date: Apr 2007
Location: The High Country
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RE: Bad hesitation on W.O.T acceleration
Open your other eye, and you will see that I am right with what the original poster said was his issue. Stop trying to twist this. It doesn't concern you. So you have a problem. Take it to the shop and let em fix it. That's about all the advice I can give you. The OP has nothing that needs fixed however. I can see said the blind man.
07-01-2008, 11:54 AM
#37
1st Gear Member
Join Date: Mar 2008
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Posts: 75
RE: Bad hesitation on W.O.T acceleration
ORIGINAL: Nuke
The few times (3 or 4, I think) I had it happen with my manual, the engine did NOT rev up when I downshifted and tried to go WOT. It just did nothing for an instant and then slowly wound up. I've tried to duplicate it on many occasions but w/ the TCS off. Perhaps I'll see if I can get it to happen with the TCS on. I'm still putting my $$ on the fuel pump issue.
The few times (3 or 4, I think) I had it happen with my manual, the engine did NOT rev up when I downshifted and tried to go WOT. It just did nothing for an instant and then slowly wound up. I've tried to duplicate it on many occasions but w/ the TCS off. Perhaps I'll see if I can get it to happen with the TCS on. I'm still putting my $$ on the fuel pump issue.
07-01-2008, 12:15 PM
#38
5th Gear Member
Join Date: Mar 2007
Location:
Posts: 2,033
RE: Bad hesitation on W.O.T acceleration
+1 on the fuel pump TSB. I was on a road trip, driving for 2-3 hours with the cruise on. Came to a toll barrier, stopped, when I went to take off, the car stumbled bad, almost died, then VROOOOOOOOOOOM!!!
One trip to the dealer, and viola! New fuel pump and pickup, and all fixed. And before anyone gives me hell, this is back when I was still stock.. LOL
One trip to the dealer, and viola! New fuel pump and pickup, and all fixed. And before anyone gives me hell, this is back when I was still stock.. LOL
07-01-2008, 01:51 PM
#39
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Join Date: Aug 2007
Location: Lakeland/Mulberry FL
Posts: 2,263
RE: Bad hesitation on W.O.T acceleration
ORIGINAL: GidyupGo
Open your other eye, and you will see that I am right with what the original poster said was his issue. Stop trying to twist this. It doesn't concern you. So you have a problem. Take it to the shop and let em fix it. That's about all the advice I can give you. The OP has nothing that needs fixed however. I can see said the blind man.
Open your other eye, and you will see that I am right with what the original poster said was his issue. Stop trying to twist this. It doesn't concern you. So you have a problem. Take it to the shop and let em fix it. That's about all the advice I can give you. The OP has nothing that needs fixed however. I can see said the blind man.
who the hell are you? it dont concern you no more than me, im offering first hand experiance on the same issue he says he has, you dont know any more them me what the exact problem is. your the only one saying its the rev limiter out of the 30 posts here.ive never heard of an auto hitting the rev limiter unless you manualy dropped it in 2nd or first. so stop telling people that stuff dont concern them,who died and made you forum queen?dont even look at my post if your just going to argue. i guess the other 20 people in this thread are all wrong too,you are the only one who is correct in this whole thread.
07-01-2008, 02:47 PM
#40
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Join Date: Sep 2007
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Posts: 365
RE: Bad hesitation on W.O.T acceleration
i agree with ***** on this one. i just don't see the computer letting you hit the rev limiter in an automatic unless like he said you manually drop it into second or something. but just mashing down the gas should NOT cause you to hit the rev limiter. my money is like I've been saying still with the TCS being on because it happens to me just about everytime I leave my TCS on when I'm going down the highway which is why I always turn it off if I know I'm going to be doing 50+ mph for an extended amount of time. with the TCS off it has never happened to me not even once. however, it COULD be the fuel pump as well which you might want to get checked out. I have an 07 and i think the fuel pump tsb applied to 05-06. but it doesn't hurt to try the turning the TCS off first and just see what happens.