More problems.....HELP

[d_breezer13]

Ok so I just get my car back after putting my boost gauge and oil pressure gage and my act 2900 clutch. So i have been driving it just to get used to the clutch. I got the clutch used and works great. Now when i put it in reverse I was pulling out of my driveway and it made a clunk noise. So i put it in first pulled it back in and then tried it again and it was fine. So i was driving and i did a launch at 3 grand or so nothing special and i had to wiggle it into 2nd, and then wiggle into 3rd and then at 5k or so it started to sputter and move me back and fourth in my seat. Could this be fuel cut? Its hitting 16psi at 5k and no manual boost controller just exhaust and fmic. I also have a eBay short throw that i think is causing problems.

So my questions are:

Am i hitting fuel cut?
Ebay short throw causing some shifting trouble?
I need some suggestions.

Thanks

 

[1983gsp]

Fuel cut feels like hitting a brick wall then immediately dumping the clutch all within a ¼ of a second. If that's what its doing then yes, that's fuel cut.

 

[hypergenesis]

Ok so I just get my car back after putting my boost gauge and oil pressure gage and my act 2900 clutch. So i have been driving it just to get used to the clutch. I got the clutch used and works great. Now when i put it in reverse I was pulling out of my driveway and it made a clunk noise. So i put it in first pulled it back in and then tried it again and it was fine. So i was driving and i did a launch at 3 grand or so nothing special and i had to wiggle it into 2nd, and then wiggle into 3rd and then at 5k or so it started to sputter and move me back and fourth in my seat. Could this be fuel cut? Its hitting 16psi at 5k and no manual boost controller just exhaust and fmic. I also have a eBay short throw that i think is causing problems.

So my questions are:

Am i hitting fuel cut?
Ebay short throw causing some shifting trouble?
I need some suggestions.

Thanks

Check your spark plugs and wires along with the coil packs. I had the same problem before it only presented it self at higher RPM's in higher Gears it ended up being my spark plugs and wires fixed the problem right away. Because with your current mod list, unless your SAFC is off, you shouldn't be hitting a fuel cut at that psi with the mods you have.

-Armin

 

[Bud92gsx]

Fuel cut feels like hitting a brick wall then immediately dumping the clutch all within a ¼ of a second. If that's what its doing then yes, that's fuel cut.

It doesn't nessesarily happen after you drop the clutch..It can happen anytime, in any gear..


Does it throw you forward in the seat when it happens?

I would check the plugs etc like stated before..

 

[Guilty1s]

It doesn't nessesarily happen after you drop the clutch..It can happen anytime, in any gear..


Does it throw you forward in the seat when it happens?

I would check the plugs etc like stated before..

No... he is saying it feels like your hitting a brick wall, then it feels like your dumping the clutch.... in other words... sudden decelleration followed by sudden acceleration, all within that 1/2 second.

 

[d_breezer13]

No... he is saying it feels like your hitting a brick wall, then it feels like your dumping the clutch.... in other words... sudden decelleration followed by sudden acceleration, all within that 1/2 second.

Yes thats exactly what happened and it only happened in third. It happened at about 5k and then like stopped like a brick then tried accelerating again to 55k and then i stopped. And i looked at my logs from earlier that day and at 5k it was at 85% injector duty cycle on 450ccs. I mean if im not beating on it it runs fine. it only happened with the car going balls out 100%.

Also what do you think about my shifting problems? if i shift slow it goes in okay but then when im going all out once again i have to wiggle it and then pull it in. It happens in 2nd and 3rd.

Can anyone help?!

 

[91awd26]

Are the "clips" (metal u-shaped pieces) that hold the shifter cables to the tranny on and pushed all the way down? I believe there are also a set of "clips" under the center console but it's been awhile. Also make sure the cables are in good condition and didn't get pinched or smashed while removing and installing the transmission.

In short, start with the simple little things and make sure all is well (no play) from shifter to tranny.

 

[d_breezer13]

Are the "clips" (metal u-shaped pieces) that hold the shifter cables to the tranny on and pushed all the way down? I believe there are also a set of "clips" under the center console but it's been awhile. Also make sure the cables are in good condition and didn't get pinched or smashed while removing and installing the transmission.

In short, start with the simple little things and make sure all is well (no play) from shifter to tranny.

See there is alot of play in the shifter. in gear i can move it about a half an inch to an inch each way. Its especially bad in 3rd gear.

 

[d_breezer13]

Also when i hit that fuel cut or whatever it has 26 counts of knock and hitting 18 pounds of boost. What can this mean? or what does this mean? Im just having trouble this is my daily driver and i cant have fun with it anymore because it does this. Can anyone help or give me suggestions? i was told to put on a manual boost controller and see if this helps?

 

[dondmon96]

Another thing is you are supposed to kinda take it easy on a new clutch to "break it in". I've heard 200-300 miles, and I've heard 500miles.

It's hard to stay out of it, but it'll be less headaches in the near future.

 

[hazmat6135]

sounds like if ## at 85% duty at 5k you need fuel upgrades. u shouldnt run more then 90% on your injectors so your getting close to that with 2k more rpms to go.

 

[d_breezer13]

sounds like if ## at 85% duty at 5k you need fuel upgrades. u shouldnt run more then 90% on your injectors so your getting close to that with 2k more rpms to go.

Thats what i was thinking. And i dont know why my stock system isnt restricting how much boost im running. It was stuck at like 14 and creep to 16 and would be fine. Now it hits 18psi and stays there and then hits fuel cut or something like i described above. I have the upgrades for everything i just dont know how to do any of it.

Well I installed my manual boost controller and got a huge exhaust leak( hole in the downpipe fixing) i will see if i can get it to hold 15 to 16psi all the way to redline or so. Im hoping to make it to import wars this weekend so lets pray! Im looking to run a low 13.