2ZZ idle problems
2ZZ idle problems
Hi Guys, I've just got my car back with a new factory engine fitted (it's a 2011 car so drive by wire).
Running great but when I come to a stop with the engine hot the the idle surges from about 500rpm to 1200rpm constantly. If I kill it and restart it, it's fine again.
I can take it back to the garage but if it's something simple, it'll be much less hassle to do it myself. Any thoughts?
Running great but when I come to a stop with the engine hot the the idle surges from about 500rpm to 1200rpm constantly. If I kill it and restart it, it's fine again.
I can take it back to the garage but if it's something simple, it'll be much less hassle to do it myself. Any thoughts?
Re: 2ZZ idle problems
Hi,
I've got an K series S1 which was having exact same issue, I changed the IACV today and problem solved. Not sure if its the same set up on the Toyota.
Cheers
I've got an K series S1 which was having exact same issue, I changed the IACV today and problem solved. Not sure if its the same set up on the Toyota.
Cheers
Re: 2ZZ idle problems
Check your accelerator pedal connection. Sounds like it's hunting for the signal from the pedal or it has a short. Pull the plug off the throttle body in the engine bay and check it's clean and dry and that none of the pins are bent over. Unlikely to be at the pedal end as that shouldn't have been touched.
If that is all OK then If you have access to a fault code reader plug it into the OBD plug, under the dash IIRC, and see if it pulls up any codes. From that you will be able to tell what is giving the issue. It could be something in the intake that is sticking or not opening/closing properly until power is cut from it.
Where are you based as I have a OBDII reader that shows throttle position and pedal read back amongst other things if your in Aberdeenshire.
If that is all OK then If you have access to a fault code reader plug it into the OBD plug, under the dash IIRC, and see if it pulls up any codes. From that you will be able to tell what is giving the issue. It could be something in the intake that is sticking or not opening/closing properly until power is cut from it.
Where are you based as I have a OBDII reader that shows throttle position and pedal read back amongst other things if your in Aberdeenshire.
Elise S2 260
GR Yaris
BMW M2 Comp
RRS HST
VW Caddy
Mk1 Escort (bare shell)
GR Yaris
BMW M2 Comp
RRS HST
VW Caddy
Mk1 Escort (bare shell)
Re: 2ZZ idle problems
Thanks guys, I'm in Glasgow. I've got an OBD reader but didn't think to plug it in as there's no fault light showing.
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- Posts: 153
- Joined: Sun Feb 10, 2008 3:55 pm
Re: 2ZZ idle problems
if it were constantly doing it Id say the inlet manifold gasket is leaking air in, the fact it goes away when you restart the car would point me to the throttle body at fault.
If you need to go even faster, just imagine you are me.
Re: 2ZZ idle problems
Mike, my car used to do that too.
New throttle fixed mine, after trying a throttle body first!
If you need to try a throttle body I have one in the garage you can borrow
New throttle fixed mine, after trying a throttle body first!
If you need to try a throttle body I have one in the garage you can borrow
alicrozier wrote:As Robin said, need to be comfortable and confident to push right up to the limit - sometimes you only find the limit by going beyond it...
(that's why I think Mike will do fine, that and his lack of imagination).
Re: 2ZZ idle problems
Thanks guys, it's only done about 80 miles on the new engine so I'll see if I can get some more done before the weather turns.its under warranty so I can always get it back to Craig to look at (warranty company will love me )
Re: 2ZZ idle problems
My Exige sticks at 2,000 rpm when I come to a stop. I need to blip the throttle to make it go back to 900rpm.
What I have done before is - remove the jubilee clip and hose into the throttle body and squirt carburettor cleaner in
Works a treat ...... for a wee while !!
What I have done before is - remove the jubilee clip and hose into the throttle body and squirt carburettor cleaner in
Works a treat ...... for a wee while !!
Two negatives make a positive but only in Scotland do two positives make a negative - 'Aye right.'
S2 Exige
BMW 435d M Sport - 375bhp..... and stops now (big brakes!)
Work Horse - Ford Transit - Full of crap spec....... 170bhp one
S2 Exige
BMW 435d M Sport - 375bhp..... and stops now (big brakes!)
Work Horse - Ford Transit - Full of crap spec....... 170bhp one
Re: 2ZZ idle problems
that sounds like the inside of your throttle body has a layer of gunk inside sipping your butterfly from closing properly. Might be worth pulling the air filter hose off and having a look.a4drk wrote:My Exige sticks at 2,000 rpm when I come to a stop. I need to blip the throttle to make it go back to 900rpm.
What I have done before is - remove the jubilee clip and hose into the throttle body and squirt carburettor cleaner in
Works a treat ...... for a wee while !!
Elise S2 260
GR Yaris
BMW M2 Comp
RRS HST
VW Caddy
Mk1 Escort (bare shell)
GR Yaris
BMW M2 Comp
RRS HST
VW Caddy
Mk1 Escort (bare shell)
- alicrozier
- Posts: 4368
- Joined: Thu Sep 01, 2005 12:58 pm
- Location: Aberdeen
Re: 2ZZ idle problems
Or back to the original answer we gave on this, check if it sticks with engine off...
http://www.scottishelises.com/phpbb/vie ... cv#p499730
http://www.scottishelises.com/phpbb/vie ... cv#p499730
All characters appearing in this post are fictitious. Any resemblance to real persons, living or dead, is purely coincidental.
Any references to laptimes, speed or driving on the public highway are purely for dramatic effect.
Any references to laptimes, speed or driving on the public highway are purely for dramatic effect.
Re: 2ZZ idle problems
Put the reader on it. I think you'll find a misfire issue. Unplug each injector at idle and find the one not affecting the motor.
Audi "Elysium TNB500", Ardent red, black in places.
Aluminium repairs, redux bonding, riveted structures, welding, custom exhausts, composite repairs, custom big brake kits, project assist...
Aluminium repairs, redux bonding, riveted structures, welding, custom exhausts, composite repairs, custom big brake kits, project assist...
Re: 2ZZ idle problems
'Hope not, it was a misfire that killed the original engine
Re: 2ZZ idle problems
Classic injector drop m8
Audi "Elysium TNB500", Ardent red, black in places.
Aluminium repairs, redux bonding, riveted structures, welding, custom exhausts, composite repairs, custom big brake kits, project assist...
Aluminium repairs, redux bonding, riveted structures, welding, custom exhausts, composite repairs, custom big brake kits, project assist...