Jump to content


Photo

Shit cold starts


  • Please log in to reply
31 replies to this topic

#1 RickyFromThePark

RickyFromThePark

    I♥1J

  • real members
  • 324 posts
  • Gender:Male
  • Location:Oregon
  • Interests:Big tits and small nipples
  • Powered By:1UZFE
  • Country:United States

Posted 29 May 2016 - 04:47 PM

Hitting a wall here trying to figure this shit out. Every time the car starts cold (even if it's a warm day) It idles like ass and wants to die out until it warms up. Goes away within about a minute of feathering the throttle then runs perfect. When you touch the throttle it dies off then revs up a bit when released. Started doing this a few months ago, got worse and has stayed how it is for a bit now. So far I've checked:

 

CTS

MAF

Timing

Resistance checked Coils and plug wires

Replaced plugs with BKR6EKPB11, runs better but didn't help starting.

TPS

Vacuum leaks

 

Only fault code that isn't auto trans related is Power steering pressure sensor.

 

 

EDIT: Forgot to mention car is dumping white unburnt fuel smoke.



#2 Gibbs

Gibbs

    I♥2J

  • real members
  • 1844 posts
  • Gender:Male
  • Location:Texas City, Texas
  • Interests:Drifting and building cars
  • Country:Texas

Posted 29 May 2016 - 06:41 PM

mine did that till i got rid of the dbw throttle


"The best part about both these videos are Cressidas."
Alexi From Nori Yaro

#3 shlammed

shlammed

    I♥1J

  • real members
  • 383 posts
  • Powered By:1JZGTE
  • Country:Canada

Posted 01 June 2016 - 07:06 AM

do the idle control valves in these things get gummed up?   pretty much exactly what happened with my old DD ~4 years ago.

 

unless its totally dbw and it doesn't have iacv.

 

 

also another totally random potentially not related thing was an EGR leak on a truck I had did this.  blockoff solved it. 



#4 aphxero

aphxero

    I♥2J

  • OG
  • 4867 posts
  • Gender:Male
  • Location:PDX, Oregon
  • Interests:drift, toyota
  • Country:Afghanistan

Posted 01 June 2016 - 11:08 PM

Look for incorrect sensor data. namely fuel modifiers like coolant and o2. You have OBD2 right? What does the realtime data say?



#5 Gordo

Gordo

    Resident Grumpy Old Man

  • real members
  • 6642 posts
  • Gender:Male
  • Location:The Republic of Texas
  • Interests:Your mother
  • Country:Texas

Posted 02 June 2016 - 05:34 AM

'cause performance car, built cheaply.

Grow some balls, let it warm up, and drive the fucking thing.

Keep on diagnosing it yourself until you get it.

 

Or.......

Sell it, use the money as a down payment, buy a new mini van.

I hear they idle perfect when started.

 

Fuck, this place is turning into god damn StupidMania with the questions being asked.


Prefixes for 'Gordo'
 
口 Holy Shit  
口That ass hole,  
口The Magnificant  
口That old fart,  
口The infamous  
口That crazy  
口That 7M guy,   

 


#6 RickyFromThePark

RickyFromThePark

    I♥1J

  • real members
  • 324 posts
  • Gender:Male
  • Location:Oregon
  • Interests:Big tits and small nipples
  • Powered By:1UZFE
  • Country:United States

Posted 03 June 2016 - 10:43 PM

Checked fuel pressure, was good. All the sensor data looks good, maf, iat, cts all happy, can't tell with the o2 sensor, sits at 0V on idle and bumps up to .9V on throttle which seems right and dont care to log it with a scope, but it shouldn't be used for open loop cold idle anyways as far as I know.

 

All the electrolytic caps look good, though they shouldn't have any role in pulse widths. Anyone have pulse width specs for these? Going to check with a scope but have no basis for comparison.



#7 Okidriftjr

Okidriftjr

    Team Diplomats NO3

  • real members
  • 884 posts
  • Gender:Male
  • Location:Orrrreeegoon
  • Interests:Why the hell do you think I am here?
  • Powered By:1JZGTE
  • Country:Iraq

Posted 13 June 2016 - 04:07 PM

RIcky,

Your on factory management/ecu right? Sounds like an IACV issue.


I keep comming back to toyotas. Guess it's where I belong!

You don't know what JDM is unless you lived there!

 

Car by panic

Parts by XM

Aero by Lucas

 

Single handedly keeping the UN alive.


#8 Rue

Rue

    I♥1J

  • real members
  • 901 posts
  • Gender:Male
  • Location:Fort Worth
  • Country:Texas

Posted 13 June 2016 - 06:58 PM

There is no IACV on the jzs171 motor... you loose



#9 shlammed

shlammed

    I♥1J

  • real members
  • 383 posts
  • Powered By:1JZGTE
  • Country:Canada

Posted 14 June 2016 - 05:02 AM

went through build thread... looks like hes using a non-dbw throttle on it.

so it needs either an idle valve or drive by wire system.



#10 Rue

Rue

    I♥1J

  • real members
  • 901 posts
  • Gender:Male
  • Location:Fort Worth
  • Country:Texas

Posted 14 June 2016 - 11:33 AM

And you once again are fucking retarded. He has a complete dbw setup. Stop trying to give out technical advise... you're only making yourself look like an ass-hat.

How your cooling system going?

I was told to tell you "you're about as useless as a bag of dicks with no handle."

#11 Cyrious

Cyrious

    Formerly sleeper sideways

  • real members
  • 361 posts
  • Gender:Male
  • Location:Saskatoon, Sk
  • Country:Canada

Posted 29 June 2016 - 07:19 AM

I kind of have the feeling like a bag of dicks without a handle would be very useful to him.


VSe3hzX.gif


#12 Kyle

Kyle

    1jz/holset whore

  • real members
  • 6552 posts
  • Gender:Male
  • Location:heaven
  • Interests:speed parts made by chinese children and jz powered lithium
  • Powered By:Dicks
  • Country:Texas

Posted 29 June 2016 - 01:51 PM

I've always wondered the amount of data stream in those ecus. What's vta at key on/engine off? What's it at idling? Did it ever act fine and gradually started this? Try cleaning the actual throttle body itself if so
Maybe it's a cultural thing? I mean, we saw the British coming. India, they did not.

#13 Cyrious

Cyrious

    Formerly sleeper sideways

  • real members
  • 361 posts
  • Gender:Male
  • Location:Saskatoon, Sk
  • Country:Canada

Posted 29 June 2016 - 02:28 PM

Have you tested your tps according to the tsrm? Live data appeared fine on mine with safc, and throttle sweep was normal but it was out of range when I went through the tsrm guide. dust filter isn't plugged on map hose? It does sound like a vac leak though..


VSe3hzX.gif


#14 RickyFromThePark

RickyFromThePark

    I♥1J

  • real members
  • 324 posts
  • Gender:Male
  • Location:Oregon
  • Interests:Big tits and small nipples
  • Powered By:1UZFE
  • Country:United States

Posted 14 February 2017 - 04:47 PM

After chasing my tail double checking sensor data and everything else, followed by months of not giving a shit I smartened the fuck up and found the cause of the problem. Intake advance on cold starts. Unplugged the solenoid and it cold started perfect.

 

I'll pull the ocv and inspect it later, I'm assuming it's the issue unless it's management.

 

Anyone know for sure if the stock ecu runs the ocv in open loop?



#15 Foompla

Foompla

    I♥2J

  • real members
  • 1772 posts
  • Gender:Male
  • Location:San Pedro
  • Country:Puerto Rico

Posted 14 February 2017 - 08:14 PM

it defaults retarded, but im too drunk to remember specifics.

 

Repost your setup and Ill check TIS later.





"What's that?"

"Those are the head gaskets you COULD be saving by switching to JZXproject."

*music*

-end jzxproject.com commercial

#16 Foompla

Foompla

    I♥2J

  • real members
  • 1772 posts
  • Gender:Male
  • Location:San Pedro
  • Country:Puerto Rico

Posted 15 February 2017 - 05:41 AM

Whats your ecu? For SC from 99 to 2000 they changed timing logic from -12 BTDC to -6BTDC (open) and from  65 ABDC and to 59 BDC (close)





"What's that?"

"Those are the head gaskets you COULD be saving by switching to JZXproject."

*music*

-end jzxproject.com commercial

#17 RickyFromThePark

RickyFromThePark

    I♥1J

  • real members
  • 324 posts
  • Gender:Male
  • Location:Oregon
  • Interests:Big tits and small nipples
  • Powered By:1UZFE
  • Country:United States

Posted 15 February 2017 - 01:25 PM

171 motor, 89661-3A660 ecu.



#18 Foompla

Foompla

    I♥2J

  • real members
  • 1772 posts
  • Gender:Male
  • Location:San Pedro
  • Country:Puerto Rico

Posted 15 February 2017 - 03:07 PM

Give me a vin



"What's that?"

"Those are the head gaskets you COULD be saving by switching to JZXproject."

*music*

-end jzxproject.com commercial

#19 RickyFromThePark

RickyFromThePark

    I♥1J

  • real members
  • 324 posts
  • Gender:Male
  • Location:Oregon
  • Interests:Big tits and small nipples
  • Powered By:1UZFE
  • Country:United States

Posted 15 February 2017 - 03:44 PM

Don't have one



#20 Foompla

Foompla

    I♥2J

  • real members
  • 1772 posts
  • Gender:Male
  • Location:San Pedro
  • Country:Puerto Rico

Posted 15 February 2017 - 05:27 PM

Don't have one


It's not on the engine?



"What's that?"

"Those are the head gaskets you COULD be saving by switching to JZXproject."

*music*

-end jzxproject.com commercial




0 user(s) are reading this topic

0 members, 0 guests, 0 anonymous users