Jump to content
SAU Community

High Idle

Jap_Muscle
 Share

Recommended Posts

STATUS Grand Master

STATUS

Posted
Posted

Ok i manage to figure it out although it didnt really help. I got a bit desperate and ended up re-initialising the pfc and it seems to be under control to a certain degree. Hunts still around 860-920rpm. Sounds lumpy so its not all bad.

Tps on idle is around 0.39-0.40v on idle but how are u suppose to increase the WOT voltage?

from paulr33s PFC guide im suppose to let it idle for up to 30min to let it relearn while turning AC on and off.

Bit devo'ed about losing my tune though =[

2mins to reload tune, amazed your car is even running after initialising it... you rotate the whole unit to adjust the voltage.

  • Replies 84
  • Created
  • Last Reply

Top Posters In This Topic

Popular Days

Top Posters In This Topic

Popular Days

Popular Posts

Jap_Muscle
Jap_Muscle

Great news guys!! Originally had the starter motor replaced as the car has been struggling to start over the past month. Suspected bad earth could have caused the high idle. Had it replaced but did n

Jap_Muscle Mentor

Jap_Muscle

Posted
  • Author
Posted

Thats good to know thanks Trent. I got work this sat and sun until 5pm so depending on how busy you are i might have to wait till next week.

I managed to figure out how to adjust the idle voltage by turning the whole unit but is there a way of adjusting WOT voltage without affecting idle voltage? Its almost as if i cant change the range, i can only adjust the minimum and maximum, which in turn adjusts the maximum and minimum.

Jap_Muscle Mentor

Jap_Muscle

Posted
  • Author
Posted

LOL

Well this is embarrising. Went to start the car to go to work this morning and the car is barely running. I guess thats what you meant Trent. I didnt realise the car had to be turned off and on for the ECU to be re-initialised. Engine check light is on even while idling so i switched it straight off. Looks like i might have to get it towed to you Trent.

Unless someone has a FC Hacko or similar i can borrow?

mikeyR33-T Collaborator

mikeyR33-T

Posted
Posted

Great news guys!!

Originally had the starter motor replaced as the car has been struggling to start over the past month. Suspected bad earth could have caused the high idle. Had it replaced but did not fix the issue. We then replaced the TPS due to a weird a voltage range from 0.39v - 2.56v. After resetting this and replacing the actual TPS unit, we were hopeful but still no change.

Finally after replacing the Idle Control Regulator (had to rip the plenum off to do this) the cars idling at a smooth 950rpm.

After close to a year of sounding like i was launching off the line at every intersection, i am pleased to say the problem has been solved.

Thank you to everyone help!!!

p.s - if anyone is having problems with idle please shoot me a PM, ill try to be as helpful as i can.

HELPPPPPPPPPPPPPPPP - could pm so will post below:

hi read ur post about idle, well I have idle issues mainly first thing in the morning, will kick car over, it will idle rough at around 500rpm for like 5secs then die, unless i give it a lil throttle...

could be cold start issues or more serious.....

also when accelerating normal or quick the rpm will climb but then feel like its backed off, even tho my foot is firm on the pedal...

I am getting dyno done, some say R&R some say bad TPS, some say bad AFR... I have no idea...

Create an account or sign in to comment

You need to be a member in order to leave a comment

Create an account

Sign up for a new account in our community. It's easy!

Register a new account

Sign in

Already have an account? Sign in here.

Sign In Now
 Share
Go to topic listing


  • Similar Content

  • Latest Posts

    • The king 2.0
      Nissan fuga 450gt android screen

      By The king 2.0 · Posted

      It is a kunfine Android screen . Does anyone know the wirering diagram of the fuga ??
    • Nizzy_R34
      r34's love to squeal

      By Nizzy_R34 · Posted

      just an update to this, poor man pays twice  Tried sanding down the pulleys but it didnt do the trick. Chucked another second hand alternator in the na car which I got for free off my mate and its fixed the squelling. Must have been unlucky with the bearings.    As for my turbo car, I managed to pick up a cwc rb alternator conversion bracket + LS alternator for 250 off marketplace, looked to be in really good nick. Installed it , started the car and its not charging the battery.... ( Im not good with auto elec stuff so im not sure if this was all I needed to do but I verified such by using a multimeter on the battery when the engine was running and I was only getting 12.2v )   I had to modify the earth strap for the new LS alternator , factory earth strap was a 10mm bolt which did not fit the bolt on the LS alternator which was double the size so I cut it off , went to repco bought some ring terminals that fit, crimped it onto the old earth strap and bolted it up to the alternator , started the car and same issue. Ran like shit and was reading 12.2 at the battery.  For a "plug and play" advertised kit thats not very plug and play but alas.  My question is , am I missing something ? Ive been reading that some people recommend upgrading the stock 80 amp alternator fuse to a 140 amp but I dont see how that would stop the alternator charging especially at idle not under load.  Regardless ive pulled it out and am going to get it bench tested by an auto elec tomorrow but it would be handy to know if ive missed something silly or have done something wrong.   
    • Duncan
      Engine sputter

      By Duncan · Posted

      My wild guess is that you have popped off an intake pipe....check all of the hoses between the turbo and the throttle for splits or loose clamps.
    • Duncan
      S1 Autech 260RS Wiring Diagrams

      By Duncan · Posted

      Awesome, thanks for sharing!
    • Duncan
      Nissan fuga 450gt android screen

      By Duncan · Posted

      To provide more specific help, more information is needed. What Android screen? What is its wiring diagram? Does the car's wiring have power at any required BAT and ACC wires, and is the loom's earth good?
×
×
  • Create New...