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Location:
campbelltown
Registered:
May 2002
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1jz miss and runnin rich
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Sat, 05 June 2004 23:45
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hey guys,
my 1jzgte ma61 project is almost done, just have a few more issues i need to iron out.
the main problem at the moment is this.
car warms up perfectly no worries at all, is a dream to drive when warming up (moving it and stuff)
once the car is warm its a different matter. It does not idle at all unless slight accel is used. It misses when i do this too. It drives relatively ok, it did miss once when under boost but still made boost.
What i believe is that it is in limp mode ? the piss rich mixture is ok for it when warming up but once its warm the rich mixture just kills it.
When the wiring was done there was a map sensor fault. I havent been able to pull the codes yet (ECU mounted in air con box:))
I pulled the plugs and they were fouled badly confirming the piss rich theory.
Anyone have any similar experience/suggetions ?
cheers
god
BTW im still smiling cuz im impressed with how she goes now, and if it is in limp mode 
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Location:
Perth
Registered:
July 2003
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Re: 1jz miss and runnin rich
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Sun, 06 June 2004 02:55
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Is the ECU from an auto or manual?
If it is from an auto and you haven't kept the original auto box, the ECU will go into limp home mode.
Regards
Peter
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I supported Toymods
Location:
Epping, Sydney
Registered:
May 2002
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Re: 1jz miss and runnin rich
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Sun, 06 June 2004 03:01
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I'd be checking your timing, and also the wiring on your cam and crank sensors - esp the cam sensors.
standard ecu?
and yeah, even in limp mode, a 1jz-gte ma61 goes bloody fast
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Location:
campbelltown
Registered:
May 2002
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Re: 1jz miss and runnin rich
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Sun, 06 June 2004 03:22
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its a auto ecu running a manual box. I have heard of some people having issues with it but generally speaking it is okay.
is there something that has to be wired to the ecu to make it think the auto is still there ?
it is stock everything except there is no cooler.
cam sensors hey never knew they had them. one thing that may be of interest before i put the motor in the car we went over it and replaced everything. When we did the timing belt the exhaust cam had two notchs to sit in one turned more towards the inlet cam and one slightly away. The notch that was closer to the inlet seemed to be too far out so we put it on the left of it. Not sure if this would have any effect im pretty sure we did it right.
draven heard yours was on limp mode for some time, how much quicker is it ? cuz im cheerin if it is and i get it sorted
cheers
god
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I supported Toymods
Location:
Epping, Sydney
Registered:
May 2002
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Re: 1jz miss and runnin rich
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Sun, 06 June 2004 03:25
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manual ecu didn't make a huge difference to power. Just made it a lot smoother and a *LOT* more fuel efficient (in fact, on the manual ecu it was the most efficient car I've ever owned  )
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Location:
campbelltown
Registered:
May 2002
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Re: 1jz miss and runnin rich
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Sun, 06 June 2004 03:42
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draven: na i meant in terms of power and speed from when it is in limp mode to when it is not. hahah consumption doesnt bother me
did u have to do anything special when you had da auto ecu on her ?
quick question the cam sensors they are located behind the cam pulleys ? gettin the timing belt off is a pain with the motor in the car
cheers
god
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I supported Toymods
Location:
Epping, Sydney
Registered:
May 2002
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Re: 1jz miss and runnin rich
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Sun, 06 June 2004 05:42
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lol no.
on the inlet side of your engine, just above your number 1 & 6 injectors (or there abouts) there are 2 little cam sensors.
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Location:
campbelltown
Registered:
May 2002
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Re: 1jz miss and runnin rich
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Sun, 06 June 2004 08:24
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hmmmm checked the cam sensors they look solid
i have to wait to contact the dude who did my wiring about the w wire. I have no way of knowing which wire it is coming off the ecu. But he isnt back in the country for a few weeks 
did a double check for any vacum leaks and as far as i can see/tell there arent any.
the thing that has me stumped is that at idle its perfect its only when the engine is up to temprature the problems rise.
will have to wait and get error codes out of the ecu i guess
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I supported Toymods
Location:
Epping, Sydney
Registered:
May 2002
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Re: 1jz miss and runnin rich
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Sun, 06 June 2004 08:26
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is it when the engine's up to temp, or when the revs are up, or both?
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Location:
campbelltown
Registered:
May 2002
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Re: 1jz miss and runnin rich
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Sun, 06 June 2004 08:30
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its when the engine is up to temprature.
here is what happens exactally
start the car, no worries at all. Purrs along like a well trained pussy 
once its up to operating temp the idle gets lower and lower as it starts to miss etc etc
it then wont idle unles a little bit of the accel pedal is given to her. It idles like this but still misses.
It missed once under load but i havent driven her for any great time on load. Just warm her up take it round the block kinda thing.
cheers
god
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I supported Toymods
Location:
Epping, Sydney
Registered:
May 2002
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Re: 1jz miss and runnin rich
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Sun, 06 June 2004 09:16
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is your temp stable?
I'd be checking your water temp sensor - sounds like it may have the wrong part in there or something.
My car never missed with the auto ecu, but I did blow fire out my exhaust, which I must say is the *ultimate* way to intimidate people on the road (better even than a screamer pipe)
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Location:
campbelltown
Registered:
May 2002
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Location:
sydney
Registered:
March 2003
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Re: 1jz miss and runnin rich
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Sun, 06 June 2004 11:16
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hook up a check light
i have wired shit loads of 1jzs
never had any probs
whether manual ecu or auto ecu
manual box or auto box
the ecus can be wired afew diff ways
maybe they go into limp mode if not done 100% right
i have run into this afew times
especially on a 1gg
y cant u get codes out of it
just pay someone to fix it peoperly
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Location:
campbelltown
Registered:
May 2002
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Re: 1jz miss and runnin rich
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Sun, 06 June 2004 11:30
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the wiring was done professionally by a very classy wiring guy.
and i have no doubt in the work that he has done.
the diag box does not have the W pin in it. the wire isnt running to it and i dont have pin outs for the ecu/where it was hooked up to previously as the wiring guy is overseas atm.
and it doesnt mean that the fault lie in the wiring. it could be a faulty whatever which is what im trying to narrow it down to.
wheres the fun in getting someone else to fix it
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Location:
sydney
Registered:
March 2003
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Re: 1jz miss and runnin rich
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Sun, 06 June 2004 11:47
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sorry for being abrupt
i see it every bloody day
i know some threads get annoying because they go one for ages trying to figure something out
people dont realise there is soo many variables
and some things u just cant find unless theyre on a dyno
i know it costs money
im lucky i fix my car myself so i dont pay for anything
i gues sif i had to pay my opinion would be different
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Location:
campbelltown
Registered:
May 2002
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Re: 1jz miss and runnin rich
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Sun, 06 June 2004 22:19
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yea i usually do fix my cars myself but a problem like this on a 1jz is something that need some help on.
dyno time isnt going to solve this problem at all.
wasnt asking for a step by step solution just if anyone had any similar experience or suggestions to share as to what may be causing it.
cheers
god
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Location:
Brisbane
Registered:
July 2002
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Re: 1jz miss and runnin rich
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Sun, 06 June 2004 22:55
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| 82MKII wrote on Sun, 06 June 2004 12:55 |
Is the ECU from an auto or manual?
If it is from an auto and you haven't kept the original auto box, the ECU will go into limp home mode.
Regards
Peter
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my 1jz is running an r154 manual on a soarer auto ecu.. no limp mode for me
only goes into limp mode if not wired correctly
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Location:
Brisbane
Registered:
July 2002
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Re: 1jz miss and runnin rich
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Sun, 06 June 2004 22:59
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| 82MKII wrote on Sun, 06 June 2004 12:55 |
Is the ECU from an auto or manual?
If it is from an auto and you haven't kept the original auto box, the ECU will go into limp home mode.
Regards
Peter
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my 1jz is running an r154 manual on a soarer auto ecu.. no limp mode for me
only goes into limp mode if not wired correctly
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Location:
brisbane
Registered:
July 2003
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Re: 1jz miss and runnin rich
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Mon, 07 June 2004 07:32
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Sorry but could someone tell me wat this conversion would cost (1jz single turbo into a ma61) to get someone to do it.
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Location:
brisbane
Registered:
July 2003
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Re: 1jz miss and runnin rich
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Mon, 07 June 2004 07:33
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Sorry but could someone tell me wat this conversion would cost (1jz single turbo into a ma61) including the engine to get someone to do it. Total price abouts.
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Location:
campbelltown
Registered:
May 2002
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Re: 1jz miss and runnin rich
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Mon, 07 June 2004 08:26
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plently of threads of that stuff just use the search button or make another thread
cheers
god
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Location:
Brisbane
Registered:
July 2002
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Re: 1jz miss and runnin rich
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Mon, 07 June 2004 08:39
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| sprinter_86 wrote on Mon, 07 June 2004 17:33 |
Sorry but could someone tell me wat this conversion would cost (1jz single turbo into a ma61) including the engine to get someone to do it. Total price abouts.
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i jsut got one into a gz10 soarer( so exact same conversion as ma61, identical) cost me 10 000 dollars.. with stock turbo's and shitty exhaust
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Location:
newcastle
Registered:
June 2002
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Re: 1jz miss and runnin rich
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Mon, 07 June 2004 12:22
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| Quote: |
I pulled the plugs and they were fouled badly confirming the piss rich theory.
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i assume you replaced the plugs!! if not 1j plugs once fouled are FUCKED throw em and start again with with ngk bkr6es gapped to 0.7mm
ive seen 1j plugs fouled so bad from perfectly running engines(factory rich) they wouldnt even idle .
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Location:
campbelltown
Registered:
May 2002
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Re: 1jz miss and runnin rich
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Mon, 07 June 2004 13:12
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yea of course i replaced them when i went over the motor. i have done maybe 200kms tops on these ones tho. Gotta start with a clean slate and work back from ecu codes
thanks for your help guys i will let you know how i go
cheers
nathan
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Location:
Newcastle, NSW
Registered:
February 2003
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Re: 1jz miss and runnin rich
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Wed, 09 June 2004 06:11
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| draven wrote on Sun, 06 June 2004 13:25 |
manual ecu didn't make a huge difference to power. Just made it a lot smoother and a *LOT* more fuel efficient (in fact, on the manual ecu it was the most efficient car I've ever owned )
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did u notice any other difference?? would it be worth changing from the auto to manual ecu if u dont need to ??
thanx, Luke
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Location:
campbelltown
Registered:
May 2002
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Re: 1jz miss and runnin rich
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Sat, 12 June 2004 10:12
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ok
got a new set of plugs and gapped them. The ones i used before bkr6e have a groove on them, i didnt notice this until today. The new ones bkr6es-11 (gapped to 0.7mm) dont.
she seems a lot better now and can hold an idle when warm, the miss is all but gone and she feels a lot stronger.
Its still idling too low though. I had a thought, could it be due to a flat battery ? as in the alt has issues charging a completely flat battery at a low idle ? im assuming the ecu would make adjustments for this but im not sure.
If the idle was just that little bit higher it seems/feels like it would be sweet as but as far as i know there is no 'idle adjust screw' as such on a 1j.
cheers
god
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Location:
Newcastle, NSW
Registered:
February 2003
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Re: 1jz miss and runnin rich
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Mon, 21 June 2004 16:45
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| TUB-11Y wrote on Wed, 09 June 2004 16:11 |
| draven wrote on Sun, 06 June 2004 13:25 |
manual ecu didn't make a huge difference to power. Just made it a lot smoother and a *LOT* more fuel efficient (in fact, on the manual ecu it was the most efficient car I've ever owned )
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did u notice any other difference?? would it be worth changing from the auto to manual ecu if u dont need to ??
thanx, Luke
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*bump*
could anybody answer this please?
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Registered:
March 2003
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Re: 1jz miss and runnin rich
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Mon, 21 June 2004 17:23
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My recent bout of missing was caused by faulty injector wiring. You have to make sure they are properly wired up, no exposed wires and all sealed up.
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Location:
sunny coast, qld
Registered:
October 2002
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Re: 1jz miss and runnin rich
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Mon, 21 June 2004 21:54
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| naten wrote on Sat, 12 June 2004 20:12 |
If the idle was just that little bit higher it seems/feels like it would be sweet as but as far as i know there is no 'idle adjust screw' as such on a 1j.
cheers
god
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Yeah, they are the plugs people recommend for the 1jz.
I am certainly no expert, but I thought there was an idle screw on the 1jz, as I thought mine was idling a little low too.
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Location:
Gold Coast
Registered:
May 2002
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Location:
ACT
Registered:
May 2002
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Re: 1jz miss and runnin rich
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Tue, 22 June 2004 02:29
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I'm no expert on this stuff, but maybe there's something going on with your idle valve control or stepper motor. Maybe the wiring is wrong there.
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