Author | Topic |

Location: Perth
Registered: November 2004
|
ST190 corona idle problem
|
Thu, 03 February 2005 04:10
|
 |
i have a toyota corona 92 model, and just recently, i've had problems with the idling of the car..its rougher than usual, and is worse when the a/c is on. it doesn't have a problem in park. when i put the a/c on, it drops to very low revs, and then goes up again, but is still rough.
i've just recently changed the spark plugs and leads.
when i put the car from drive to neutral, when i'm stopped at a light, the revs drop and the car idles really roughly for a second or two, then it picks up and goes to normal (normal being slightly rough)..
i thought perhaps i have to change the idle timings, but i simply cannot find the idle screw.
any ideas what's wrong with it?
|
|
|

Location: Perth
Registered: November 2004
|
|
|

Location: Tumut
Registered: July 2004
|
Re: ST190 corona idle problem
|
Wed, 16 March 2005 10:57

|
 |
put the old leads back on and see if that fixes it
|
|
|

Location: Perth
Registered: November 2004
|
Re: ST190 corona idle problem
|
Wed, 16 March 2005 11:47

|
 |
the old leads were screwed, arcing and stuff
I've noticed, when the car is in drive, it is fine... but if the car is in drive, and the fan is on (no a/c) it shakes, and even worse with a/c..
It sort of "searches" for the idle speed, it dips below 500 and then it goes close to 900 and then it settles at around 650, a bit less.. and is still kinda rough
i had the problem before i changed the leads though...
|
|
|

Location: Perth
Registered: November 2004
|
Re: ST190 corona idle problem
|
Wed, 16 March 2005 11:49

|
 |
but yeh, take a look of those pics, i gotta wait and see if they will fix it,before i do any work on it.....
|
|
|

Location: Tumut
Registered: July 2004
|
Re: ST190 corona idle problem
|
Thu, 17 March 2005 06:47

|
 |
i had the same problem with mine and it ended up bein the wires for the water temp sender bein to brittle and not getting good enough current through it
|
|
|

Location: Perth
Registered: November 2004
|
Re: ST190 corona idle problem
|
Thu, 17 March 2005 13:29

|
 |
turbocaldina wrote on Thu, 17 March 2005 17:47 | i had the same problem with mine and it ended up bein the wires for the water temp sender bein to brittle and not getting good enough current through it
|
the water temp sender? is that the thermostat? where is the water temp sender and what does it look like?
|
|
|

Location: Tumut
Registered: July 2004
|
Re: ST190 corona idle problem
|
Fri, 18 March 2005 10:24
|
 |
its at the back of the motor where the top radiator hose comes out
|
|
|