Jump to content
SAU Community

Recommended Posts

when i start up the car the idle goes higher than normal and feels unbalanced in the engine, as i start up it will shoot to nearly 2k rpm idle, and to stop it i have to blip the throttle a couple of times to get it to calm down to normal, what causes this?

i cleaned the AAC yesterday, didnt change anything

any other ideas?

Link to comment
https://www.sau.com.au/forums/topic/352499-high-idle-on-startup/
Share on other sites

  • Replies 42
  • Created
  • Last Reply

Top Posters In This Topic

could be an issue with your cold start or even timing.

An AE86 sprinter that a mate and I used to work on had the timing advanced a little, but for some reason at idle the revs would climb to about 2.5k and then drop to 600rpm, then climb and drop. etc.

he ignored it, and nothing eff'd up yet?

maybe a similar issue.

ill have to check out my timing then, any easy way apart from taking the radiator out to see the notches on the crank?

the other thing is, its only just started doing it recently, and i havent touched the car since i bought it

Edited by Clutch

not to sure with the RB's bud. hopefully other guys can help.

or just take it to a mech, i'm sure alot of mech's in our area have dealt with RB's.

Theres one near hallam station that are pretty good with em, and reasonable to deal with aswell!

not to sure with the RB's bud. hopefully other guys can help.

or just take it to a mech, i'm sure alot of mech's in our area have dealt with RB's.

Theres one near hallam station that are pretty good with em, and reasonable to deal with aswell!

near hallam station? thats close by, have an address?

near hallam station? thats close by, have an address?

http://maps.google.com.au/maps?hl=en&safe=images&um=1&ie=UTF-8&q=hallam+repco&fb=1&gl=au&hq=repco&hnear=Hallam+VIC&cid=0,0,5927533211543775040&ei=_4lITfjIKoievgP6352VBQ&sa=X&oi=local_result&ct=image&resnum=1&ved=0CA0QnwIwAA

Hallam Service Centre

11 Keppel Dr, Hallam VIC 3803 (03) 9796 4387 ‎

they generally take a look for free. worth a shot?

No chance of it being fuel pump related? Might be ECU being ghey with the pump and it leaning out = high idle?

possible factor, would this also cause heavy fuel smell while driving sometimes? how do i check that my fuel pump is working properly?

Edited by Clutch

Not sure if it's of any help, but I recently swapped my turbo.

Put it all back together including intake, disconnected the CAS and cranked a few times (to build some oil pressure - it's debateable whether this is needed or not, but nonetheless I did it), then reconnected the CAS and started it up.

Wouldn't idle properly at all due to loose intercooler hose, so I fixed that up and started her up again.

Idled smoothly but shot up to 2.5k and slowwwly dropped over about 5 minutes to normal cold start idle.

Like I said, not sure if there's anything in what I did, that's related to what you did, but hey there's my info - hope it helps.

If it's stock ecu reset it, could help

Also if your running stock ecu and more boost then normal it will dump fuel in when it boosts. My car on stock ecu at around 9-10pso was getting an AFR of 10:1

Worth a try for the 5 mins it takes. If you don't know how just unplug your battery and hold the brakes down for a bit. Play with the switches and stuff. The idea is toget any residual electricity out of the system

Try adjusting your tps im pretty sure if you rotate the tps clockwise that will lower your idle and anti clockwise will increase idle speed so if your idle is high on startup rotate clockwise and see if that lowers it find a happy medium with it then you could probably fine tune with your aac valve Idle adjustment screw let me no how you go mate

Try adjusting your tps im pretty sure if you rotate the tps clockwise that will lower your idle and anti clockwise will increase idle speed so if your idle is high on startup rotate clockwise and see if that lowers it find a happy medium with it then you could probably fine tune with your aac valve Idle adjustment screw let me no how you go mate

i cant adjust the tps because my idle is fine at times

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



  • Similar Content

  • Latest Posts

    • You can’t see much on the other side as the lcd is there I don’t think it’s the same as the m33 beside it as the markings on top is not the same was hoping someone had a good quality photo or if they just happened to have the unit in hand, quickly take the cover off and take a photo to clearly show the marking on top to identify the diode   the unit is currently with an electronics repair shop so I can’t take another photo at the moment hopefully they are smart enough to know if it’s a zener diode or not
    • I'd be very surprised if you can buy new OEM mats. But if you can, I want some too!  Do you have links to the variations you found? Also, where are you located? I found that Nengun is happy to list items to purchase but when you do buy them you'll get an email that it's actually discontinued. As far as I know the variations in floor mats are different colour schemes as well as automatic and manual having a slightly different shape. The automatic ones fit into a manual car without issues, but I think you'd have trouble fitting the other way around. I have photos that show the shape difference if you care. FWIW I bought sets of used floor mats in decent condition at yahoo auctions.
    • Hi 🙋‍♂️. Just bought my Unicorn but the interior need some minor work so it would match my expectations ;). I noticed it is hard to get used oem floor mats in good condition so i started to dig if there's any chance to buy set of new ones. I found two websites - nengun and amayama and it looks like one can still buy factory new floor mats in Japan, but thers a small issue. Some mats (i assume genuine, oem ones) are marked as G4900 and these are "discontinued". The ones you can buy are marked as G4911 but i have no idea if these are also oem, made by other producer or some lower quality replacements that looks entirely different. Can anyone help? 😃  P.s. there is also some strange indication - 0V005, 0V015 and 0V505. Any idea what does it mean? Would appreciate any help with this 🙏
    • Hi, Marek here 🙋‍♂️. I finally fulfilled my longtime dream - recently bought Stagea and now waiting for it to arrive in Poland. There's only few of these in my country, and one of the owners  recommended mi this forum as a source of all the info i'd need since now i own one  so here i am.  
    • Version 1 aluminium airbox is.......not acceptable No pics as I "didn't like the look.....alot" Even after all my "CAD", and measurements, the leg near the fusebox just didn't sit right as it ended up about 10mm long and made the angle of the dangle look wrong, the height was a little short as well, meh, I wasn't that confident that Version 1 was going to be an instant winner I might give Version 2 another go, there's plenty of aluminium at work, but, after having in on and off a few times, and laying in the old OEM airbox without the new pod filter and MAF, there may be an option to modify the OEM air box and still use the Autoexe front cover and filter.... maybe This >  Needs to fit in here, but using the panel, and not the pod, the MAF will need to fit in the airbox though> I'm thinking as the old OEM box and Autoexe cover that is sitting in the shed is just sitting around doing nothing, and they are relatively abundant and cheap to replace if I mess it up and need another, it may well fit with some modifications to how the Autoexe brackets mounts to the rad support, and some dremiling to move it get in there, should give me some more room for activities, as I don't want to move the MAF and affect the tune Sealing the hole it requires to stick it in the air box is simple, a tight fit and some pinch weld will seal it up tight  I am calling this a later problem though
×
×
  • Create New...