Master_Tao

iTrader: (7)

ok, so I get into my car to goto work yesterday, she starts right up. I work all day and come out and try to start her up. she cranks and cranks but won't start up. it was raining last night so I just left it there. this morining I come back to try and get her started and she's still acting the same. what I noticed today was there is a weird buzzing noise coming from around the UIM. I thought I might have flooded the engine so I tride pulling the egi relay to un-flood it, and the buzzing noise stopped. anybody have an idea what this might be? if you have any ideas or need more information, let me know. Thanks in advance.

Rocking Rotary

iTrader: (14)

Is the noise very loud and it vibrates the UIM? If so thats the same thing my friends car is doing. He can get it to start but it runs like crap. If he figures it out I will let you know. I am guessing its on of the motors under there thats bad, but have no clue for sure. All you have to do is pull the UIM and turn the key on and you should be able to find out what is making the noise.

Master_Tao

iTrader: (7)

yeah, well the unfortunate thing is, it's stuck up at my work. so there is only so much I can do. the UIM wasn't really vibrating though. it's just a loud buzzing.

Railgun

Were you under the hood while the buzzing was happening? Just trying to clarify since you pulled the egi relay and it stopped....perhaps that the relay is the problem?

zullo

Stock ECU? Check error codes. If PFC, check sensors. Sounds like a relay or solenoid

Master_Tao

iTrader: (7)

I was under the hood when it was going on. I took another look at it today and the buzzing seems to be coming from the throttle body area. you can even feel a slight buzz in the throttle body. I thought it may be the egi relay, I'm just not really sure since I'm still new to these cars. I've got a pfc, what sensors should I check for errors?

Box of Tj

i'll be listenin cuz i've got a pretty similar problem. is the buzing more like a clicking? cuz that's what's happening with me right now. I've been reading up on it and i'm starting to think that one of my injectors is bad and leaking and threw way too much fuel into it and flooded the engine. i'm going to go un-flood the engine and see if it does it again. If one of my injectors is bad, i hope it's a primary, cuz i'm gonna swap those out for my 850's, and then put the 1600's in the secondary slots.

Master_Tao

iTrader: (7)

I hope it's as simple as that, I tried unflooding my engine though to no avail.

Box of Tj

i also unflooded my engine to no avail. i had a mechanic friend suggest maybe one of my injector wires shorted and the clicking/buzzing was the electricity grounding to the manifold, because when injectors stick they usually don't constantly cycle like that. they'll click once when the ignition is on and once when it turns off. I've ran out of time today to work on it, so i'll have to pick it up when i have a day off. I'm not sure when my 1600's will come in, because it's 4th of july weekend, but i'll be patiently waiting for them. I'm hoping it's just a short somewhere so i can get it patched and drive my car in the parade my town has on the 4th.
if i figure anything out i'll post it.
also, before my car would stall out whenever i let the gas off. did you have the same problem? when i un-flooded my engine tho i cleaned out the plugs, it actually could sustain an idle, however the idle was choppy. I've also noticed that with the engine off but the key on, my PFC commander is reading .34kg/cm of boost, when my boost gauge is at 0. i never really looked at the commander with the engine off before, so i don't know if this is normal. i'm thinking maybe my map sensor is bad, because when i noticed that i remember reading somewhere that when the map sensor goes bad and it's seeing boost that's not there, it'll imidiately start dumping fuel into the engine thinking there is a load when there isn't. i don't think this explains the clicking, however, but tomorrow after work i'm gonna pull out my voltmeter and run some tests. then again, if you checked the sensors with the commander, wouldn't it highlight the bad sensor? maybe that's not it, but i'm still going to look into it, regardless.
again, if i figure anythign out i'll post

trini

iTrader: (2)

the buzzin sound is your ics. idler motor... Idle Controle Solinoid. its senceing the car should be starting and trying to give air to your engine to idle smoothly. its not the cause of why your car isnt starting... your plugs could simply be fowld..

trini

iTrader: (2)

get with your pfc programmer. and find out if you have to much or not enough fuel at start up.. ???

Master_Tao

iTrader: (7)

I didn't have th problem with Idle like you, except when the engine was cold. I'm gonna check for bad sensors when I'm at work tonight.

Master_Tao

iTrader: (7)

I bought the car already with the pfc, It was tuned by banzai racing though. I talked to them briefly about the tune and they said it was decently rich for safteys sake. I don't know if they would remember if it was overly rich at startup though. the buzzing coming from the throttle body isn't a uniform sound, it's constantly changing speed and pitch. would that still be the idle control motor? I'll try and pull a plug either tonight or tomorrow to see if they are fouled. I hope it's a simple problem like that.

Master_Tao

iTrader: (7)

ok, I checked the sensors on my pfc tonight and realized I had no Idea what to look for. any ideas on that? nothing was blinking. I still haven't got to pull a plug yet to see if they are fouled but hopefully I will get a chance to do that tomorrow. any more Ideas till then?

trini

iTrader: (2)

im sure its your idler motor ISC and yea it does change pitch. mine does the same thing when the car stalls or something . i have a power fc also tuned to run rich for saftey reasons. but im 100% sure its your ISC making that niose. so dont worry about that being the cause of it not staring.its right behind the plenum close to the trottlebody just reach over and if you unplug it you will hear the noise stop. ... its most probably the plugs are fowld. the car might still need to be unflooded even if you clean/change the plug to get it to run again... good luck i hope its one of these simple problems..

Box of Tj

is there a quick fix for that? mine doesn't change pitch at all, it's a consistant rapid clicking sound. that does make a lot more sense, though, it being the ISC. i know i'm running too much fuel at startup, i've tried figuring out how to change it but the manual really doens't make much sense in that aspect. my car starts right up now, sense i cleaned the plugs. i just cleaned them for now to see if that helped at all, and it did. once some rotary shops are actually open around here i'll go get new ones, because autozone or oreilley's dont' carry them, but untill then these are doing just fine to diagnose. I absolutly insist that i do all the work myself, and will refuse to take it to any shop unless i absolutly have to. tools aren't an issue for me, i've got plenty (i am goin to school to be a technician, after all)
thanks trini for the help, tho, i'll tackle that in the morning.

Box of Tj

P.S. anybody know the lag timeof 1600cc injectors? i need to figure it out to plug in the correction values in my commander once i get my 1600's in.

Railgun

Gimme a while and I'll let you know how I have mine set if no one else responds before me.

Box of Tj

awesome. i know today's the 4th and all, but i'll work my *** off to get it running to make sure all the lil kids and they're civics don't rule the road today....

Railgun

Ok...

16V .668
14V .768
12V 1.048
10V 1.408
8V 2.008
6V 2.840

Oh yeah...one...sorry for continuing the off topic thing...not like me.

And use at your own risk. I dunno if this is somewhat variable, so don't pin it on me if the **** blows up.

Box of Tj

ok, i figured out what the clicking is in my car. its the turbo pre-control selenoid. i dont' really know what that has to do with why my idle is fucked up, but i'm working on that one...

Box of Tj

no, that's not what i meant, not the PIM correction thing, sorry, i needed to clarify.
setting - inector.
it'll look like this
Fr-Pr 100% +0.00ms
Fr-Sc +0.00ms
Rr-Pr 100% +0.00ms
Rr-Sc +0.00ms
Q-Pr 550cc
Q-Sc 850cc

i'm lookin for the 0.00ms values, the commander manual calls it injector lag time correction value. sorry for bein off-topic...

Railgun

Oh...ok...that's the lag value from the datalogit...I'll get that in a few.


Here ya go...

.40

trini

iTrader: (2)

your car is cutting off when you get off the gas b/c of the power fc . your programmer didnt ajust the fuel correctly at idle or on low rpm. i had the same prob . but mine was just slight. and the power fc learns the car and corrects small problems. i guess mine was small b/c it dont do it anymore. only if i tap the gas and let of immediatly. .. my programmer said he fig. it out and that i should send it to him to ajust.but now i live in florida and hes back in new york. anyhow it dont do it anymore so im happy wit how it runs.

Box of Tj

huh?