The 5K stutter cutout misfire stumble breakup Thread [Merged 7-8]

[Newlogics]

My project 92 Talon just wouldn't be nice to me.

I figured that my smoking problem was due to my turbo leaking oil, since upper IC pipe had whole bunch of oil in it.

Now more porblems arize....

1st: It wouldn't idle normally, instead it revs up to 2K and drops back to 1K every like 2 sec. if idle is adjusted to be lower then 1100 rpm

2nd: When rmp reach 5K under WOT, it hesitates violently. As soon as rpms drop a bit, it's fine again.

(The good thing I fix the unlock buttons, 'cause it had shaved handles and you couldn't get inside by any means except a trunk....)

 

[Dream On]

Compression is good. About 170 give or take 3 or 4 psi across the board. So I don't think it has anything to do with that.

 

[Defiant]

Throw away whatever shitball spark plugs you have, replace with NGK BPR6ES gapped at .028", and replace the ignition wires.

 

[Dream On]

Haha. Thanks Defiant. The plugs are the correct ones, maybe I just need new wires. It looks as though the plugs were replaced right before I bought the car. Maybe if I'm not too poor, I'll pick up some wires and see how it goes. Thanks.

 

[98RedGs]

Check your wires and see if you can see any significant markings on them to show you that they are damaged or faulty. If your replacing the wires then just toss in an extra $12 bucks for plugs and call it a day.

Thanks for reading
John

 

[Defiant]

Haha. Thanks Defiant. The plugs are the correct ones, maybe I just need new wires. It looks as though the plugs were replaced right before I bought the car. Maybe if I'm not too poor, I'll pick up some wires and see how it goes. Thanks.

Start the engine and pop the hood in the dark. Bad wires put on a terrific show.

 

[fwdturbobov1996]

that's the dumbest thing I've ever heard. the analogy you picked sucks. besides why would you reply and say something stupid that provides absolutely no helpful information to the question. not only did you waste space on this post but now i realize i must classify you in the same category as myself, a rookie member, a title shunned because of members like yourself. by the way nice gallery car pic. looks just like a 90 talon. you should probably review the photo gallery submission rules.

some helpful information you could have provided on a rookie level would have easily been:

check you base timing. the procedure is outlined in VFAQ under the engine category

your plugs look good which most likely means they are, however the gap you can't see with the naked eye. check you plug gap and adjust to specs.

boost leak test definitely. use a bottle of soapy water to help you find leaks you can't easily hear.

if you can get you hands on a vacuum gauge you can use in to tell you quite a bit about what's going on inside you motor. my Chilton's manual outlines a few procedures and explains a bit on how it works. a Chilton's or equivalent is a good tool to have.

a compression test wouldn't hurt. don't bother with a wet test, they aren't very accurate but if you find some problems after your dry test, do a cylinder leakdown test and that will tell you where your compression headed besides the cylinder.

buy a logger. it will tell you much more than anyone on this site. nobody can provide the info a logger can, but providing the people here with the your logger's info could tell others things it would take hours to type. and a 1g logger only costs about 140 bucks off ebay. (DEAL)

do those things and you may likely uncover your problem. hope this helps.

My analogy my have not been in the ball park but it sure as hell got my point across. Even two other people after me posted to change the plugs and wires. Which in the end was what I was saying. If you had any common sense then you would have known that I was trying to say he needs new plugs, but it looks like we all have the reading comprehension level of a 3rd grader. You know sometimes people get new cars, it happens in this world. Im not even the same owner of this account that owned that previous riced out 2g so get over it pal. Get of your high horse. Yes real newbie, 16 yr old newbie that does tranny swaps for him and his friends. The system is actually messed up you say anything stupid or someone doesnt like one line you say they cast a vote against you. Hell i was told a guy lost points b/c someoen didnt like his picture. Your telling him to go spend 140 bucks on logging software when he hast even done the basics. In the longrun the logger will help, but it would be smarter to start with simple things. Spark plugs, wires , and such. Wheres the logic in buying a 140 logger and not buying 10 bucks in plugs and wires , price varying

 

[ddavisaf]

Whoa whoa whoa everyone.

Slow down

I have one question.
However long it may be....


When your driving at WOT and you hit 5k rpm, are you bucking or sputtering at all? Sputtering, Stumbling, etc. is causing by poor ignition.
It sounds like from what I read that you're not experiencing these problems, that the rpm's just kinda freeze for a couple seconds. Am I correct?

 

[Dream On]

You are correct. I didn't notice it at all until I watched the RPM's. The car doesn't shake or do anything violently...Thats why I'm not really sure how long its been going on, since I've only had it since June.

 

[ddavisaf]

Automatic or Manual?
Manual: Stock clutch? Yes: Your clutch is slipping, time to get a new one.

 

[98RedGs]

Automatic or Manual?
Manual: Stock clutch? Yes: Your clutch is slipping, time to get a new one.

I'm sure if he get's on the car rather hard at lower rpm's he would see if this could be the problem.


Also if he's ever smelt a slipping/burning clutch it's something you CAN'T mistake for anything else. Kinda like how you can't mistake burnt transfer case fluid... Oh the horror stories I could tell!

Ahhhhh.


Does this problem happen at lower rpm's?
Search results yeild the following results in other threads


http://www.dsmtuners.com/forums/showthread.php?t=58271&highlight=high+rpms
http://www.dsmtuners.com/forums/showthread.php?t=100963&highlight=high+rpms

Checkout those two threads and see if they help you any.
Thank you
John

 

[ddavisaf]

I'm sure if he get's on the car rather hard at lower rpm's he would see if this could be the problem.

Not always. Beginning stages of a bad clutch may only mean at high rpms during WOT. It will get worse though if it is in fact your clutch. You will start to notice it more and more at lower rpms until it simply won't cooperate any longer.

 

[98RedGs]

Not always. Beginning stages of a bad clutch may only mean at high rpms during WOT. It will get worse though if it is in fact your clutch. You will start to notice it more and more at lower rpms until it simply won't cooperate any longer.

Oh I know what you mean, I had a smoked clutch myself a year back almost and I can still remember the smell. But if it's doing it in higher rpm's I don't condone this but he should get on it in lower rpm's and see if it starts slipping.

Tho I still don't think it could be a clutch problem.
If the tone of the car changes I would believe it's something other than a drivetrain failure.

 

[ddavisaf]

When he says changing tone I was thinking his engine doesn't increase in sound like it was, it just sits at the same sound for a minute, you know what I mean?

 

[v2ner]

not to go off topic but if your clutch was slipping, it would start at your higher rpms and work it's way to the rest.

 

[fwdturbobov1996]

If you put the car in 5th gear at 40 mph, floor it, and the clutch slips. Get a new one. I drove around for 7 months on my old esi with a slipping clutch.

 

[98RedGs]

When he says changing tone I was thinking his engine doesn't increase in sound like it was, it just sits at the same sound for a minute, you know what I mean?

Yea, I know exactly what you meant.

 

[ddavisaf]

Any new developments? I'm curious to see where we are with this.

 

[Dream On]

Sorry, I don't really drive the car that much. I drove my friends 94 TSi AWD and his clutch is MUCH firmer than mine and seems to grab better, so I figure the clutch could be the problem. Damn, I've never replaced a clutch, and I figure it would take me a few days to do this...and a like $300 since I'd put in an ACT 2600 or something of the like. GRR...This will put a damper on my modding fund...But at least it should fix the problem hopefully, if not, I'd get it eventually anyways. Yeah the engine tone doesn't seem to change, just chills for a second or two..probably not even that. It did it once at 5k rpms, then went up to 6 and did it again. Who knows...I'm at school and can't even check my plug gaps here...Next time I go home, I'll give the car a nice check over of the ignition and stuff and I'll make a boost leak tester, and by then I'll have my boost gauge in as well.

 

[ddavisaf]

It definately sounds like a clutch to me, and I think most people here will agree. An ACT 2600 Clutch Kit is DEFINATELY a modification. I highly recommend it.

 

[Dream On]

You are in fact correct, the clutch is slipping like crazy. Like I said, I don't drive the car too much since I'm in college, but I took it out tonight. I had it in 5th at about 30 mph or so, then just floored it. Once it got up to 2-3k rpm's, the revs just shot up to about 6-7k while I was still in the same spot. It smells bad and seems to almost stall now when I try to go in first... Any idea how long I've got til I replace it? If I absolutely baby it will it make it to Christmas? Thanks, and good call.

 

[cua0]

if it's slipping at WOT you could probably baby it, but i would recommend replacing it asap.
not sure anyone elses feelings on them but i've had fairly good luck with centerforce clutches. yeah they are definately a hit&miss operation but they're cheaper than oem most times, especially if you are a DIY type person.

 

[ddavisaf]

As long as you stay out of WOT for a while you'll be okay for probably another couple of months. Baby the car and watch the tach to see if you're slipping without a lot of throttle.
I'm glad we could figure this problem out.

 

[Dream On]

Thanks for helping me out guys. I'm leaning towards a Spec stage 2 since the ACT stories sound pretty scary. I'll make another thread about that though...

 

[punkak2]

just got my car back with the knew tranny(dog box racing.....thanks alex) and i get on it. the car surges and backfires when the rpms are between 4-5k rpm. doesn't do it all the time just every know and again.i have the boost set at 12 psi but i don't have the fuel mods done yet......is that my problem????? please help





Midnightclipse2g

 

[94Jettameowpsst]

DO you mean it backfires or does it cut out? If it backfires your mas may be going bad or you have some electrical problem. Do you have a logger?