Newbie ForumBeginner/newbie/general DSM questions. first mods, how to run 10's when you haven't run 12's yet, any tech question that doesn't fit in another tech forum. New Members must limit their tech posts to this forum and sub-forums.
hey , when I am driving a consistent speed it feels like my car is turning the fuel off and then on. You can barely feel it. Or is it idle surge. When I drive in second gear at about 20 mph the car starts to buck alot.
I have done all of the free mods and 3 inch exhaust.
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veh: 92 dsm awd
mods: 255 lph fuel pump, stock injectors
- new small 16g turbo ported
- new 95 ported exhaust manifold
- new 3" turbo back exhaust w/ 3" d/p & O2 housing
- Turbo XS manual boost controller
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problem: boosts 13-15 psi till 5k rpm then as the rpms rise the boost rises until 6k where engine hits fuel cut & 20+ psi registers on the boost gauge
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I'm not real sure what causes this nor how to combat it....
any ideas or thoughts would be greatly appreciated... I'm new to the game (DSM) & have been told that this is boost creep...what do I do??
TIA for your asstance...
I think this is a problem with our POS turboxs boost controllers, Try to set yours with the brass side almost all the way in and the "blue" screw almost all the way out. (assuming you have the high performance mbc) Im in the middle of fvcking with mine right now, Creep with external wastegate.
let me now if you figure anything out. I actually think this creep is to do with our mbc's not being able to hold pressure.
16G's are known to be creepy. Did you have yours modified with the 34mm wastegate flapper? That's a good fix. Also, I heard that 3in DP's can contribute to boost creep. Hope that helped.
regards
If you set the boost controller up that way it will go full boost. They are bad for the ball sticking. But for setting take the boost controller off the car & set the course side(brass side) back it all the way out. This would be to your right & then start turning it in (to your left) and shake it and listen for the ball to rattle. Keep turning it in untill the ball stops rattling. this is a good point to start from. I go about one more turn past that but start from there. Then take the fine side (blue side) and turn it all the way in to bottom(to your right). Then back it out 4 turns & try it from there. Also the line from (Vac or Boost) works better if you come from the intake instead of the throttle body& use as short of vac lines as you can & use good line not soft line. If the ball does not rattle when you are ajusting the course side the ball is stuck & you can take the brass side apart & clean & add alittle graphite.Also the blue side has a oring that can start leaking. Pull the screw out of the blue side and see if the little oring is good & lube.
does it ever end?!?!? now my car makes a weird noise at idle and it sounds like it is coming from the power steering pulley or pump or something in that area so i havent driven it down the road.... my luck the crank pulley would break off or something.
Ok i Looked at the Pulley while it was runing.... if it is the balancer wouldnt it be wobbeling or something like that?..... it also idles really low now that it is making this noise...... And the name of this noise is "Gobbling" i have decided......like a Turkey GOBBLE noise almost.... freaking weird!!
It is idling aroun 700 when cold , when it starts to warm up it idles around 500...... ANY more info or help?
You have to take the belts loose to check this.My car made a noise for about a month & then the balancer just came apart.I guess you have not got to see if your boost creep is fixed.Let us know what happens.
Well i tried to start it up and the battery was dead... at this point i was thinking the altenator was bad and was producing the noise..... so i jump it off and walk around behind the car to find out i had left the hatch popped .... what a dumbass i am.... anyways i decided i was goin to bump the idle up and see what happens.
I bumbed it up to around 950-1000 still cold ..... still making noise but not as loud!! I went inside for about 5 minutes and come back out and it is idling about 1400-1500..... I bump it back down to 850 and NO NOISE!?!?
? so i drive it around and have no problems other than still boost creeping... Next morning i crank it up and its idling low same noise so i go inside let it warm up come back out and its idling about 850 with no noise....I thought cars idled high till they warm up???
this is weird!!!
as for the creeping im ordering a 34mm wastegate flapper today!
OK. I keep getting fuel cut. I dont like it, can anyone tell me whats going on, or how to stop it. My car is stock, and I dont want to mod until i get everything in good order.
Thanks
I thought awd's didn't get fuel cut. Or maybe 1gs do. Didn't it have to do with the rating of the tires that came out of the factory. The fwd's didn't have zr rated tires so they put fuel cut at 135mph.
Originally posted by Slappster I thought awd's didn't get fuel cut. Or maybe 1gs do. Didn't it have to do with the rating of the tires that came out of the factory. The fwd's didn't have zr rated tires so they put fuel cut at 135mph.
what does the drivetrain have to do with the amount of fuel/air going into the engine? or the tire rating? im gussing your confusing fuel cut with a speed limiter......
bigjasoni, are you sure your hitting fuel cut? it feels like a brick wall. small stuttering is more then likely something else. try reading this to better understand fuelcut http://members.shaw.ca/costall/ECUprimer/ECU_ch7.html
also, if thats the case, time to upgrade the fuel system..altoguh i dont see why thatwould occur in a stock car........
Originally posted by bigjasoni OK. I keep getting fuel cut. I dont like it, can anyone tell me whats going on, or how to stop it. My car is stock, and I dont want to mod until i get everything in good order.
Thanks
Are you sure it's fuel cut? Not just breaking up at hi rpm's. Could be a boost leak.The MAS may be reading more air than your engine is getting. Could also be your plugs/wires.
You should only experience fuel cut when you are forcing more air into the MAS than the stock set up can provide fuel for. Unless you have modified your intake and turned up the boost you are probably experiencing something else.
Alright guys, I have a 92 GST w/ dejon intake pipe, modded maf,k-n,2.5 turbo back exhaust, accel wires,and BPRES plugs(NGK one range colder plugs), and modded Boost Solenoid. Everytime I punch at about 6000 rpms I hit fuel cut and I let go of the gas for a second or two and the car runs fine, this happens in every gear as soon as I get to 6000rpms. Anyone have an idea why?It never did it when I had the stock exhaust, when I took the downpipe it also did it but at 45000rpms. If anyone have any ideas let me know.
Thanks
Miguel
![Fuel Cut: What is it? How do I fix it? [merged]](/forums/iconimages/newbie-forum/fuel-cut-what-how-do-i-fix-merged_ltr.gif)
fuel cut?
HELP!!....probw/ fuel cut/boost creep(?)
.... what a dumbass i am.... anyways i decided i was goin to bump the idle up and see what happens.
? so i drive it around and have no problems other than still boost creeping... Next morning i crank it up and its idling low same noise so i go inside let it warm up come back out and its idling about 850 with no noise....I thought cars idled high till they warm up??? 
or the tire rating? im gussing your confusing fuel cut with a speed limiter...... 
Fuel Cut at 6000 RPMS!!!!
