CA18 wont rev, at all???

Post by **sdtouge** » Tue Apr 19, 2005 5:23 pm

so i got my car to finally idle ok, but not untill i reach normal operationg temperatures (NOT). i have no idea what this is, or why.

whether its in gear, or in idle, the car will not rev up at all. when i step on the throttle it might move 100 rpm up at hte most.

someone from 240sxforums.com suggested a HUGE vacuum leak, and i also noticed my boost gauge is at -3 psi (3 psi of vacuum) when its cold and im trying to keep it alive. i also have no power brakes.

here is my vacuum setup:wastegate - cold pipebreather part -intakeanother breather type thing-back of throttle bodyback of throttle body-brake boosteraicv stuff. under mani-tees to coldpipe, then goes to the air regulaotr and into the mani again.4 under the side of inake mani/throttle body-teed off2 under throttle body- teed together (towards the front)1 smaller one behind throttle body area (near brake booster line) goes to fpr, butterfly, and boost gauge.1 more behind throttle body teed off. then the one vacuum line that gets teed off when you swap to sr t25-teed off

thats it i beleive. let me know, i followed what needs to go where from this site, if its wrong i do not know it...

so any ideas would be great.

POST UP PEOPLE!!! please i need some help.

Post by **limecorrado** » Wed Apr 20, 2005 10:50 am

if your @ idle you probally be in vaccum normally, once you bring the revs up you will build boost.I had an idle problem before my problem was mafs wiring and the very large vaccum hose that connects to the hot pipe was'nt attached.

Post by **sdtouge** » Wed Apr 20, 2005 4:14 pm

very large vacuum hose that connects to the hot pipe?

where did it come from? i am using the enjuku sr hot pipe and there isnt a spot for it so that cold be the spot of a large leak...

also, i started it up today and when it was cold i could hear a vacuum leak very slighty, but then when it wamrted up i truned on the fans to check it out (i dont want ti to over heat) and i couldt haer/feel it beuase it was too loud/windy.

also at wot i got it up to aobut 1300!!! whoo whoo!

im gonna go get that elcirtical cleaner and get it all up in the tps sensor,plug and fix that vacuum leak.... hopefull that will help a little.

still no power brakes though...

Post by **limecorrado** » Wed Apr 20, 2005 6:19 pm

sdtouge wrote:still no power brakes though...

Do you have the brake booster vacumm line attached?That would definately cause some issues.

Post by **F3600** » Thu Apr 21, 2005 7:56 am

my car was having problem if this hose was not connected like that give it a try

Post by **sdtouge** » Thu Apr 21, 2005 4:17 pm

oh nice thanks alot. so you take the aicv hose and instead of plumbing it into your cold pipe plumb it into your intake piece? i guess it could go right were the breather hose goes....

also, i was checking around for vacuum leaks today and i didnt feel anything... oh yes my brake booster is hooked up, ill take a ppicture of the enigne bay tomorrow in the day light for every too see.

thanks alot for all thehelp so far!

Post by **fallen180sx** » Thu Apr 21, 2005 5:34 pm

are you getting any codes on the ecu? you might have already done this.. but when i had the same symptons youre having.. i found out it was my knock sensor not hooked up. good luck!

Post by **sdtouge** » Thu Apr 21, 2005 5:49 pm

ya i got code 55, but it was also pulling that when my o2 sensor wasnt hooked up....

could this be my o2 sensor at all? i just put in a new one but its still acting somewhat the same as when it wasnt hooked up.

well did your car rev at all? i stopping at like 1200rpm or so

im gonna spray carb cleaner on the vacuum lines/ic piping to check for links as well.

i know it doesnt mean much lol but i am really stumped

Post by **Not_a_sr** » Thu Apr 21, 2005 6:26 pm

its been a long long time since i set up my vacum ports and system , so please correct me if i make a mistake.

1.Wastegate drawing off compressor housing of turbo2.Boost gaugedrwing off vacum port behind throttle plate behind the throttle leverage wheel (what ever its really called )3 BOV teed off the port that runs the boost gauge.4. FPR adn butterfly port teed into the back of the manifold.Brake booster hooked up with checkvalve inline to back of manifold. 5.Breather on pass side valve cover hooked to checkvalve port on the manifold.6. breather on driverside plumbed back into the intake pipe (pre TURBO Post maf.

pretty sure my AAC vlave went under the manifold and directly plumbed into my cold pipe.

the airregulator i forget how it went. i dont have it anymore, nor the AAC valve. running ghetto idle controls and no regulator, CAs hate coldstart!!

you should have -19 to 22 of vacum at idle. is your timming set? what intercooler are you running? get some pictures of your set up from every angle front and both sides. might be somthing pretty simple! !

Jon

Post by **Not_a_sr** » Thu Apr 21, 2005 6:31 pm

also the one port under and infront of the throttle plate block it off. its too small to use for anything really.

sounds like you may have a few things on the wrong places and maybe even a open port some where.

Post by **fallen180sx** » Fri Apr 22, 2005 7:36 am

sdtouge wrote:ya i got code 55, but it was also pulling that when my o2 sensor wasnt hooked up....

could this be my o2 sensor at all? i just put in a new one but its still acting somewhat the same as when it wasnt hooked up.

well did your car rev at all? i stopping at like 1200rpm or so

im gonna spray carb cleaner on the vacuum lines/ic piping to check for links as well.

i know it doesnt mean much lol but i am really stumped

yeah mine would not rev over 1500 i believe.. we were stumped for a long time. noticed the knock sensor was chillen.. hooked it up.. spun some tires and became happy i bought the thing.

Post by **float_6969** » Fri Apr 22, 2005 8:49 am

make sure that you have the PCV system hooked up properly also. This makes more difference than you would think.

Post by **Marshalarteest** » Sat Apr 23, 2005 2:44 pm

uh check your brake booster hose? its a pretty big vacuum hose.

Post by **float_6969** » Sat Apr 23, 2005 4:26 pm

He said it's hooked up.

Post by **sdtouge** » Sat Apr 23, 2005 7:03 pm

ya ist hooked up.

i wanted to work on it today but i had some job interviews and some errands

tommmorw im gonna go over everytihng really thouroghly and spary everytihn (all the intake) with carb cleaner to check for vacuum leaks i migh have not beena ble to feel or hear.

i cant thank you guys enough for the help.

Post by **sdtouge** » Sun Apr 24, 2005 10:18 am

ok, i got it to rev up, it seems like when i pinch the fpr vacuum line a little bit, then i let it go normal, then go inside and rev it, it will go, it takes like 20 seconds at wot to get to like 22, then it starts to build boost, then it hits like 3500 and goes fast so i just take my foot off the petal.

another thing, when i disconect some of the aicv vacuum lines it idles the smae, im thinking that could be my problem or my fpr is bad. oh my idle is still at like 3psi of vacuum...

EDIT: ok i dont think its when i pinch my libne to my fpr, its more when it just warms up more.

also, i defianantly had my intake peice wrong because the line for the breathere just got torched against the heat shield.

um, there is hesitation at around 1900 rpm and an acoupe kinda "bangs" i think its a back fire.... up also kinda alot of white smoke, well not that mcuh but i think my turbo is burngin oil

also, i know my ecu is ok, i had everytihng pluged in, then i unpluged the know sensor, turned the engine on for a couple seconds, turned it off and sure enough code 34... so its not anything electrical thats wrong...

ok thats jujst a quick little update. thanks!

oh i am noosting at 9 pounds at about 4500 rpms, just wanted to add that in, thats with open filter, 2.5 dp, and a fat leak betwwen dp and cat.

ok cool and please keep the sugegstions coming!
Modified by sdtouge at 1:43 PM 4/24/2005

Post by **sdtouge** » Mon Apr 25, 2005 4:12 pm

bump

it seems as if it might be burgin some oil and also will onyl rev when its been wramed up then some

suggestions please!!!!

Post by **biosehnsucht** » Mon Apr 25, 2005 7:22 pm

ever since setting my FPR to the "correct" pressure it has a hard time starting (i.e. impossible if I'm not keeping it alive, and just flooring it doesn't work), but once warmed up it hauls. I'm thinking vacuum/boost leak, or the plugs (haven't replaced them since fixing my crazy overfueling), or water temp sensor (replaced w/ one from old KA and its not as bad, but still not fixed), ... one theory as to why its better once warmed up is the o2 starts working and the ECU can figure out something ain't right. even after its warmed up it occasionally hiccups like a misfire (hear a sound sort of like a minibackfire too, coming from the engine area, but that might be the fuel finally igniting in the turbo housing or something)

Post by **Azmi604** » Thu Sep 19, 2013 8:39 am

Hello, I have the same problem until now not solve. I'll read about this first will post a picture of my engine maybe tomorrow.

CA18 wont rev, at all???

CA18 wont rev, at all???

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Re: CA18 wont rev, at all??? (Not_a_sr)

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