Car goes dead @5600 rpms - SRT Forums

reed32 · 07-05-2009, 08:21 PM

ok. this issues has started over a year ago on this car. i don't always have the car because the owner works a lot so when i do get the car its for 1-2 weeks at a time and more upgrades are getting done. well basically when the car goes WOT at 5.5-6k its hitting a wall, were i can no longer accelerate anymore. Im a little puzzeled.

items changed:
coil
new 50trim turbo (other turbo broke)
new clutch (other clutch was slipping)
new wires
lowered the fuel pressure from 45psi to 40psi (runs e85 most of the time)
spark plugs to .28
removed white vaccum line to the tip sensor
cam position sensor
changed s3 map and tip sensors

i'm thinking its the dtec or fuel pump now. the car has no hanging rpms, no idle issues. im thinking of making a youtube video so you guys can see what it is. so strange.

oh yeah its Kaz109 car:
stage 3 pcm
stage 3 map/tip
50trim
pro series head with solid lifters
act extreme clutch (btw bad ass clutch)
crane 16's set @ (0,0)
returnline w/bottelneck fix
255 pump
ed super beast fmic
950cc injectors (it did it with the 750's as well)
mpx 62mm tb
rage tek ported manifold
dtec (think this things messing up too)
w/i dual nozzle set up
scan guages
aem wideband

p.s. 23psi around 31-3300 rpms.

any thoughts?

srt4crazy05 · 07-05-2009, 08:26 PM

what intake does it have? coupler collapsing maybe?

BrandynSRT · 07-05-2009, 08:40 PM

i would say take out the dtec.. make sure you re connect the map signal wire at the pcm.. or it will go down hill

but there was an issue a week ago when a kid couldnt go past 5K it was due to no fuel.. whats your AFR

reed32 · 07-05-2009, 08:50 PM

Quote: Originally Posted by BrandynSRT

i would say take out the dtec.. make sure you re connect the map signal wire at the pcm.. or it will go down hill

but there was an issue a week ago when a kid couldnt go past 5K it was due to no fuel.. whats your AFR

thinking about taking the dtec wiring apart since i didn't do the wiring. ...last time i looked, af's were 10.3-10.5 off meth. Now i cant tell what the af's are because the wideband harness got wrapped around the steering wheel and ripped the wires. I have a spare harness that will go in tomorrow.

setting in the dtec are right but i notice the fcd @5000 <---is this suppose to be that high?

reed32 · 07-05-2009, 08:52 PM

Quote: Originally Posted by srt4crazy05

what intake does it have? coupler collapsing maybe?

runs no intake on the car.

murrtownsrt · 07-05-2009, 08:57 PM

i would check the dtec wiring reed

reed32 · 07-05-2009, 09:04 PM

Quote: Originally Posted by murrtownsrt

i would check the dtec wiring reed

thats my next step man. sometimes the dtec say's reload or retry....something like that. not loading up sometimes.

jessebeachusmc · 07-05-2009, 09:53 PM

same exact thing is happening to me so im interested in hearing some more input...im a little bit more stock than you though lol.

conroy9940 · 07-05-2009, 09:56 PM

maybe its the d-tec itself?

reed32 · 07-05-2009, 10:17 PM

Quote: Originally Posted by conroy9940

maybe its the d-tec itself?

thats what im thinking it has to be. just did a pull timing is 22* dropping to 19* @22psi with out meth on right now.
idc is 72%

reed32 · 07-05-2009, 10:18 PM

Quote: Originally Posted by jessebeachusmc

same exact thing is happening to me so im interested in hearing some more input...im a little bit more stock than you though lol.

all good man. im going to put a new harness on the wideband and check the tec wiring tomorrow. later on tonight i'll get a video of whats happening.

rico's-srt · 07-05-2009, 10:23 PM

it could be the fuel pump going bad and not supplying the volume it needs for the upper rpms. when you hook the wideband back up it will tell you that

reed32 · 07-05-2009, 10:27 PM

Quote: Originally Posted by rico's-srt

it could be the fuel pump going bad and not supplying the volume it needs for the upper rpms. when you hook the wideband back up it will tell you that

see i was thinking that too but wasn't sure. i was thinking if the pump was bad wouldn't it start making a noise? thanks for your input

on the aeroforce guage does it have a feature to see the fuel pump voltage or fuel pump duty cycle?

i think tomorrow im going to install his fuel pump rewire kit and see if that helps at all.

matthew00029 · 07-05-2009, 11:11 PM

All intercooler pipes are upgraded? Everytime I have seen this problem (2 times) it ended up being a collapsed coupler of either the intake or IC piping. If it goes dead that means you are not getting air, how are the afr's when it happens?

reed32 · 07-06-2009, 01:07 AM

Quote: Originally Posted by matthew00029

All intercooler pipes are upgraded? Everytime I have seen this problem (2 times) it ended up being a collapsed coupler of either the intake or IC piping. If it goes dead that means you are not getting air, how are the afr's when it happens?

yeah all ic pipes are fine. cti piping and jmb coldside. at 5600 the car doesnt go anywhere and the car goes lean (seems like fuel stops going to the car).

strange issue.