engine dies when you rev past 2 grand

[talondsmawd]

after the car is warmed up if i take it down the street and raise the rpms past 2grand and push in the clutch the car just falls on its face and dies!! its like it doesn't expect the sudden loss in fuel or something? even when i just rev it up if it just let off and don't "burp" it at around 2 grand it just dies...

 

[PaRaNORML]

sounds to me like its your MAF,are you pullin an engine code? if check engine light is on , pull a code so we can further assist you

 

[PaRaNORML]

make sure everything to intake is snug also , a loose intake to the turbo can cause this prroblem also,it realy sounds like its intake problem,either the MAF or something intake wise isnt on there good enough, hope this info helps you out man

 

[talondsmawd]

thats the thing there is no code everything intake wise seems to be fastened down. people have told me it has to do with my 750cc injectors and me not having a tune since 06

 

[PaRaNORML]

i dont see why that would cause the problem,, start the car and unplug the MAF see how the car reacts or bogs down,if nothin happens when you unplug its the MAF

 

[talondsmawd]

well i unplugged the maf and it died? so that isn't the problem?

 

[PaRaNORML]

the car should run without MAF but lope idle,, i suggest replace the MAF anyway just to be sure,also try to clean the TPS also , still sounds like your MAF though man,

 

[rush2252]

A stock car will run with the MAF unplug not one with 750cc injectors.. why have you been running 3 yrs w out a tune?

Do you have a logger? If so post some logs. Also are you venting?? because it Sounds like a boost leak..

 

[tsiAWD91x]

1. fill out your profile to let us know exactly what your working with in your car that is HUGE

*****i would do as kolby suggested *boost leak test* deffantly*** replace your fuel filter and check your fuel pump if you know your way around tuning and its somting thats unexplained

2. if you car was sitting for 2 years then i hope you flushed the old gass
3. if you got bigger injetors i would deff make sure that your tuning system is comp-ing the extra fuel or you wont be going far

*can you free rev the car? dose the car smell bad of gass at idle? how far can your rev the car in neutral? (rpm) let us know these questions and get back to use... a log would help if you got one as kolby said

 

[talondsmawd]

i bought this car a while ago and have been slowly working on all the dumb little problems on it..and no i don't have a logger. venting?? are u talking bout the bov? no it doesn't recirculate.
and the car drives fine hits boost fine vacuum doesn't surge stays at 19 vac. im currently building my own boost leak tester so as soon as i finish it ill see if i can fine any leaks..

i was reading bout the isc and my car does almost everything it says about the symtoms. im trying to track down a multimeter to test the ohm resistance on the sensor to figure out if thats the problem.. i believe it might be because it takes my car untill operating temp for the idle to drop down..but its still high about 1000 rpm

PS: im new to the dsm world so still trying to take in it all..

 

[jdunbar10]

how are you running the 750's? are you using a safc2? i had the same problem and it turned out the wiring was bad connections on the safc2, i re did the wires and it was great to go

 

[talondsmawd]

yeah i have safc2 i just updated my mod list and put a couple pics up..

 

[talondsmawd]

1. fill out your profile to let us know exactly what your working with in your car that is HUGE

*****i would do as kolby suggested *boost leak test* deffantly*** replace your fuel filter and check your fuel pump if you know your way around tuning and its somting thats unexplained

2. if you car was sitting for 2 years then i hope you flushed the old gass
3. if you got bigger injetors i would deff make sure that your tuning system is comp-ing the extra fuel or you wont be going far

*can you free rev the car? dose the car smell bad of gass at idle? how far can your rev the car in neutral? (rpm) let us know these questions and get back to use... a log would help if you got one as kolby said

and i can rev it all the way up in any gear even neutral its just when i let off the pedal it falls on it face and dies

 

[rush2252]

welcome to dsms. First off stop venting. And you cant run 750s w out a tune + venting and expect it to idle after deceleration. Most people will vouch that the car will die after the BOV releases. You cant tune with the SAFCII without a logger or a wideband your just guessing otherwise.

Try recirculating and finding a way to get a tune. Im trying to point out the obvious problems if you want the car to run correctly.