1. matty Fidanza/Exedy & ACT
2. spindation Fidanza/ACT
3. Lurchdogg11 Fidanza/ACT
4. I30tMikeD Fidanza/???
5. jcy98maxse Fidanza/Exedy
6. cardana24 Fidanza/ACT
7. DonSupreme Stillen/ACT
8. slizan99 Fidanza/Spec
9. Requin6 Fidanza/Exedy
10. JeEvE Fidanza/Exedy
11. PoePoe2797 Fidanza/OEM
12. billy_corgan Fidanza/ACT
13. Larry H Fidanza/Spec

 

are you having this problem as well? if so I want to drive your car.

 

Guys, not to throw you off... But I have a 1996 GXE, with stock (original as well) clutch and flywheel, 293000km. And I am experiencing the exact same issue your are all describing. I have tried changing the coils, plugs to no effect. I do know my clutch is on its way out as it is slowly grabby higher and higher... I seems to support what someone said at the beginning of the thread. He said that when his clutch was on its way out it started doing this bug thing. I really hope this is it, cuz its really really annoying. I will try to stiffen the motor mounts as I think they are getting lazy. They are not cracked or anything but I think that after 300000km they are maybe starting to degrade anyways. I will also try cleaning this sensor on the front of the transmission (bellhousing)...

PS... has any of you that have the fidanza/*** combo have stiffer motor mounts ? Are you also experiencing the same shudder/bug ??

Charancon

 

I have stiffer moter mounts as well and Im experiencing it...

DaveB..I hear what you are saying and I respect all of it, but what can you say to people that have the fidanaza and arent experiencing this at all, or even better yet, a UR or Stillen flywheel and not experiencing the problem and they're 5 or 6 lbs ? ?
It just doenst make sence that after this flywheel is clamped to the clutch as "one" it makes this sensation of bogging, hesitation, even at fast speeds but definetly under any kind of load and a blip of the throttle.

-matt

 

I agree that it does sound like the shuttering could be caused by a sensor signal...but at the same time IMHO its still a flywheel problem if the flywheel is causing a sensor to send a faulty signal.

 

I'm just looking at the evidence and the process of elimination. Not many people on the Org have Fidanza flywheels (I'd say maybe 40-50 people) and those that have Stillen/UR are probabaly 3-5. I believe the Stillen flywheel is just a rebadged UR flywheel, no? Using those that have the Stillen/UR flywheel really isn't a good comparison, IMO.

Maybe the reason some people aren't experiencing problems with their Fidanzas is because maybe they got the crank sensor positioned right or maybe they've learned to live with the issue, or maybe they spend a lot of time revving high.

People need to remember there are driveability issues associated with lightened flywheels. With less inertia, the engine not only revs quicker, but revs will also fall quicker and with less mass. This is why lightened flywheels usually introduce a bog or stumble on a lower rpm shift. The lightened flywheels also make it harder to start and shift smoothly under normal driving. This is just the nature of the mod. You sacrifice day to day driveability for better high rpm acceleration and shifting. IMO, there is a problem with the VQ's ECU seeing a quick rpm drop under light load duty. The ECU gets flaked out by some sensor and you get some stumbling. The problem is probably worse on hot days and those that run underhood intakes. The stumble and bog directly after shifting is caused by the lower inertia. This is all just an opinion and an educated guess from articles I've read about flywheels.

 

i just talked to Araffio the other day because i noticed he has a fidanza/spec combo. Some of you might have seen his car in cardomain and stuff. His car is a 5spd conversion as well and he is experiencing absolutely no problems with his car. He told me it was a decent mod and did nothing but help his car and make it more fun to drive. I think hes the first person ive heard from that has had no problems at all with his setup.

 

Exactly..just like JAY25 with a fidanza/ACT, and is experiencing no stutter or stumble at all...

I still think its that front sensor on the bellhousing messing up on the signal, or some mount that is failing

-matt

 

It sounds a lot more sensible that it is a sensor problem or an ECU "hiccup". A flywheel is just to simple of an object to be directly creating problems with the car, especially since its mated to the clutch.

 

Just to let you know, i looked at the flywheel today, and the friction surface on mine is almost flush, or if any, sticking out just slightly from the surface of the flywheel. When i do the install, ill measure both the stock and fidanza for any difference in thickness.

 

I think its the TPS....There is possibly a dead spot in the TSP causing a hickup...because it really only a low end feeling thing

-matt

 

Just to clarify it is not a mount problem. My car has the following that i installed a month ago: new ball joints, new energy suspension bushings (lower control arm, sway bar), new cattman coilovers, new place racing motor mounts, new axles, and a fstb. The front end is solid. This would probably amplify the feeling due to the stiffness.

I agree with dave upon the issue of inertia and possible ecu related. It still feels like a fuel issue to me but its still a guess. Just wondering if anyone had a wideband to check that. If its not fuel then it would lead me to believe it is ecu/inertia problem.

 

TPS possibly has a dead spot

-matt

 

the throttle position sensor? I highly doubt it.


Jake

 

Just adding me to the list step-on-it-blurp-blurp-then-go-list.

1. matty Fidanza/Exedy & ACT
2. spindation Fidanza/ACT
3. Lurchdogg11 Fidanza/ACT
4. I30tMikeD Fidanza/???
5. jcy98maxse Fidanza/Exedy
6. cardana24 Fidanza/ACT
7. DonSupreme Stillen/ACT
8. slizan99 Fidanza/Spec
9. Requin6 Fidanza/Exedy
10. JeEvE Fidanza/Exedy
11. PoePoe2797 Fidanza/OEM
12. billy_corgan Fidanza/ACT
13. Larry H Fidanza/Spec
14. Meximax Fidanza/ACT

 

Since I got my car back together I got the hesitation once on my 2nd to 3rd redline shift...come to think of it, I think the only time I have ever gotten the bog was on the 2nd to 3rd redline shift.

 

I30tMikeD....Criuze at 50-60 in 5th, gas on then gas off then quick gas on, what happens ??

-matt

 

no problems in that situation. Only when shifting hard from seond at redline to third and that is only every so often. It's not really an issue for me...unless it happens at the track then I will be ****ed.

 

definately. how far do you live from lilburn?

 

Why would you write the TPS off right away ?? If its happening when load is put on the car and the throttle is blipped, and it happens at a certain rpm Every time, there could be a dead spot in the TPS

-matt

 

because if the TPS had a dead spot, it wouldn't be fidanza specific

 

I live in Sugar Hill (mall of georgia), and work in roswell.

 

Well I had my Tranny guy take my car for a ride today, probably a 50 mile trip, he was alone, and he COULD NOT feel what I am explaining to him. I gave him a write up of what to look for and what to do to get this studder, and he couldnt get it. 50-60 in 4th and 5th and gas on gas off gas back on, and he couldtn get it to do anything...

Ill be taking a ride with him tomorrow while I am in the car so I can tell him what to do

-matt

 

matty, ive been reading this post. I just purchased the findanza and the actclutch, and also the MEVI. I had them all installed at once. I drove out of the shop and all the way home and my car was perfect. definatly alot faster. i went to sleep woke up in the morning too drive it to work. and i got all the symptoms u did. in fact my car seemed like something was misfiring uncontrolably from 3500rpms to 5500. it would studder, jerk, bog whatever u wanna call it. i got bugged called my mechanic for an appt this morning. I got into my car this morning and there was no problem at all with the car no studdering no hesitation.

so im not sure what the **** is going on but its really bugging me out and im feeling u 100%.


PS sry about my spelling im in a rush have to run out the door. but i had too post this before work.

later

 

So did Fidanza contact anybody about this yet? This is really irrtating. Maybe someone at the dealership might be able to hook it up to a Consult while the porblem is happening and check what each sensor is reading

 

Slizan drove my car today and said he could feel the same stutter.

 

I've already done this. all relevent sensors are within their specified range whenever this happens.

 

ive read that when you install your flywheel you should sand it down to give it a slightly rougher surface. do you think that the clutch is just slipping or something?

 

no..

We may have to step up and call Fidanza out on this one

 

I have oem clutch and fidanza, no studdering shuddering or any of that in any gears. I do get shuddering and wheel hop from launching from 1st but thats not related to the flywheel.

 

Pulls. ZERO hesitation or anything. I repeated this @ 40 mph and same results. I have ~3psi of boost @ 50mph, so I did the 40 mph run at 0 psi.

I have the ACT clutch and fidenza flywheel

 

Just thought I would chime in on this post. I have a Fidanza and a Dual Friction Centerforce. 500 mile break in and about 6000 on since install. I have never noticed any hesitation or had any problems with rpm drop between shifts. I installed them myself so I know it was done right.

I am sorry to hear about everyones bad luck.

 

maybe its not such a big deal...I still have the problem but my tranny guy (friend) took my car for a ride today, 40 miles, and noticed NOTHING thats abnormal. I gave him every example of where it happens and how to get it to happen, well he had no luck. Ill ignore it for now...not a big deal

 

Well, guess that means we have to wait longer for a solution....oh well

 

Well gentlemen/ladies...after reading matty was giving up in his pursuit of this problem, I dicided to do a little research myself. Apparently the problem is a MAF/Flywheel problem. Here's the deal. I found a site saying that the older an MAF sensor gets, the less responsive it becomes (as with anything usually) and the problem begins when a sudden blip-of-the-throttle occurs. What happens is that the MAF is (at that small point in time) is detecting normal constant air flow while TPS detects the throttle opening. To account for this sudden occurance, the ECU adds a small amount of fuel to account for what the MAF wasn't able to pickup. Heres where the "bog/flopping around" feeling is generated, and continues until the MAF catches up. Now, with a lightend flywheel, the motor gains rpms even quicker, throwing MAF reading off even more, which results in a more violent/noticable feeling.

THE EXPERIMENT:
Well, my father happens to have a newer Maxima than mine. So I decided to pull a switch on the MAF sensors. Once everything was finished, took the car out for a drive and guess what....95% of the problem SOLVED! The car felt more responsive, and when I tryed to recreate the bogging, all I got was a constant pull throughout the RPMS, no bog bog bog then accelerate. SUCCESS...but I have to admit, once..only once I felt it very very minutely when going 40mph going from closed throttle to WOT instantly....and this was almost unnoticeable and happened once out of the 100 times i tried it.

CONCLUSION:
Boys, I have a strong feeling it's your MAF. Temporarily swap it out with someone that doesnt have the problem and test it out. I would even recommend a brand new one...Peace

 

You Unplugged the MAF for the experiment on your dads car ??
I'm confused

-matt

 

Thanks PoePoe2797, for going ahead and doing something to fix the problem. Hopefully it will work for eveyone. matty, he took his dad's MAF sensor and put it in his car.

 

lets add mileage to the list

1. matty Fidanza/Exedy & ACT
2. spindation Fidanza/ACT
3. Lurchdogg11 Fidanza/ACT
4. I30tMikeD Fidanza/???
5. jcy98maxse Fidanza/Exedy
6. cardana24 Fidanza/ACT
7. DonSupreme Stillen/ACT
8. slizan99 Fidanza/Spec
9. Requin6 Fidanza/Exedy
10. JeEvE Fidanza/Exedy -89k
11. PoePoe2797 Fidanza/OEM
12. billy_corgan Fidanza/ACT
13. Larry H Fidanza/Spec
14. Meximax Fidanza/ACT

 

Matty..2,000 miles on the clutch/flywheel
132,000 on the car

V1 Supercharger went in this weekend so if I still have the problem, Im going to resort to the MAF...not a bad idea but I dont think the TPS should be overlooked either

 

Yup, i just put my dads into mine. I have like 70k on mine. Let me tell you, everything is better, no jerkiness coming on and off throttle, shifting is a lot firmer...almost like a new car.