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Discussion Starter · #1 ·
On my buddy's fusion (3.0L 6sp), he's having signficant lag when on the highway and trying to hit hte gas to move into the fast lane. Any ideas?
 
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More air is now coming in, the computer is trying to match it with fuel so as to get the best fuel economy and max power. Any longer then 1 to 2 seconds. I suggest you take it to the dealership. Since its a 6sp and problems shifting...well thats his own damn fault lol.
 

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Lag in shifting to a lower gear, lag in response time from moving the pedal to action, lag in what? You are specifying two different things. Get your buddy on here!

I haven't had any real specific problems, but I find that sometimes the transmission doesn't really know what gear to go into. I had to nail it last night at 45, and I swear it was like, 2 seconds before it did a fucking thing.

Ryman, the 6sp is an automatic transmission. You cannot get a manual with the V6.
 

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I have the same issue in my 500 with the 3.0L V6. I hit the gas and then wait a few ticks, then it goes. I believe it is a drive by wire issue on the hesitation. Also I have noticed that if I hit the brakes then accelerate I have a good lag before the car goes.
 

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Its all Electronic Throttle Control related. It can be reduced with a reflash.
 

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Discussion Starter · #6 ·
[quote author=pete link=topic=54300.msg890788#msg890788 date=1155752039]
Its all Electronic Throttle Control related. It can be reduced with a reflash.
[/quote]


That's pretty much what I told him, from what info I got. Basically he gets scared because when he's trying to get into holes on the highway, the car is taking a second or two to respond.
 

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If it seriously that bad, he should take it back to the dealer and see if there is an available reflash to correct it. If he still isnt happy, he can get a performance tune that can make adjustments to his drive by wire system
 

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Its like this ..

*pedal to the floor*
One-One-Thousand
*engine soudns increase*
Two-One-Thousand
*engine rpms increase*
Three-One-
*BAM power*
Thousand
*pushed into your seat*
 

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I don't experience any lag, but I have had hit the rev limiter when downshifting. I figured the automatic wouldn't let that happen?
 

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[quote author=MZ6ZoomZoom link=topic=54300.msg893193#msg893193 date=1155819153]
If you're hitting the rev limiter when downshifting, you probably shouldn't be downshifting ;)
[/quote]

Let me clarify....Pedal to floor, Downshift, Accelerate for 2-3k RPMs, Rev-limiter (less than 1 second), shift.  This is wrong for an automatic.  And if a downshift is out of the engines range it shouldn't downshift.
 

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[quote author=MZ6ZoomZoom link=topic=54300.msg890637#msg890637 date=1155749674]
On my buddy's fusion (3.0L 6sp), he's having signficant lag when on the highway and trying to hit hte gas to move into the fast lane. Any ideas?
[/quote]

Get a manual gearbox. :lol:
 

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[quote author=captainhook link=topic=54300.msg895904#msg895904 date=1155866954]
[quote author=MZ6ZoomZoom link=topic=54300.msg890637#msg890637 date=1155749674]
On my buddy's fusion (3.0L 6sp), he's having signficant lag when on the highway and trying to hit hte gas to move into the fast lane.  Any ideas?
[/quote]

Get a manual gearbox.  :lol:
[/quote]

Or drop the valve body kit for the 6 in. $$
 

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a lil lag here and there I fugre is fine ... since it probably has something to do with the on board computer and shit....

but I indeed find it wierd when I floor it while in motion and the car won't downshit but instead will climb to the high RPMs using the same gear.... it happens every now and then.. not too often...
 

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It's not fair to blame the electronic throttle for this, it's just doing what it's told. When you're cruising on the highway the torque converter will lock. When you hit the gas, the first thing the computer does is command the torque converter unlock. This takes a bit, then it can start to open the throttle and build the revs and give you more power. With a tune you can have the throttle open sooner and get the power sooner, but by adding power while the torque converter is in the process of unlocking you may be reducing its life and are using more fuel than would be required if you waited.
 

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Ah .. didn't know the Fusion had a lock up clutch .. I wondered if it did. I've never noticed an RPM drop after 6th gear so I figured there wasn't one.

My 4-speed corolla had one, and it made the car seem like it had 5 gears as there was a noticble RPM rise when the the transmission unlocked.
 

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Is it just me, or does no one else notice the subtle drop in RPM's usually after the 3-4 shift? When it hits 4th, the RPM's drop another ~200 and then the 5th and 6th shifts take place. I won't swear to it because I didn't program the TCM, but I'm pretty sure that's when the converter clutch locks up. Makes sense too, because the whole reason for initating the 5 and 6 speed automatics was to save fuel. Lock the converter up sooner, less wasted power, and less wasted fuel. As far as the converter unlocking when you nail it, it seems to depend on the day of the week. Sometimes it does, sometimes it doesn't. The other day, I nailed it and before it got around to reacting, my gap closed so I had to immediately let off. I put my foot back on the gas and it's still plugging along in 6th with the converter clutch locked up, like it never even noticed the command for full throttle! 

Hopefully the dealer reprogram will fix it, because as much as I'd like to order a performance tune for it, I can't afford it now. I've got a 05 F-450, a 04 Thunderbird, and a 05 Mustang GT in the family that are just as bad with the delays. Stupid bean counters and their stupid ETC. Give me back a God damned cable! I swear my 93 SHO was more responsive with 225k on the same motor it left Atlanta with, oil blowing past the valve guides and all. Boy do I miss the growl of the secondaries, sometimes. ;)
 

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Damn I miss that ALTIMA 3.5 V-6!!! :lol:
 

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Hey Guys,

If your car was built and has a PCM calibration before 8-1-06 (at least for the V6) HAVE IT REPROGRAMMED!!

The difference is amazing. The butt dyno confirms that it has more ass throughout the entire powerband, and the throttle response is instantaneous. Better than my SHO ever was. Now it feels more like an American V6 than a Japanese V6. It has the bottom end grunt that I'd expected after driving an 04 Taurus Duratec, and tranny downshifts are instantaneous. Cruising along in 6th, about 1/4 additional throttle initiates a 6-5 downshift, and full throttle gives an instant downshift to 3rd or 4th with full acceleration. No more duh time.

I can finally say that I'm happy with the car now. I was pleased before, but now I'm happy. No more reservation on extreme freeway maneuvers, because now it just shits and gets.

Oh, BTW, I know the guys at the dealer here locally, so your's may be more reluctant to reprogram, but they still had to put it in as a customer complaint about the transmission not downshifting properly. So, ask them to update the programming, and if that doesn't work, complain about the way it downshifts.
 
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