Idling sensor and effect on AT

[Vtim]

ok, that's not that bad

[Toalson]

Sianz... rev still dancing and worst off now is the AT gear keeps down shifting to 3rd then up to 4 again. Losing power. Wonder would reseting the ECU would be of any help. Going to change workshop to diagnose and hopefully fixed the problem. Guess changing of ride is inevitable. Gotta keep fingers crossed that can get COE this coming week.

[Blue850r]

ECU is just processing the signals that are feedback from the respective sensors. There is no memory effect in it, so resetting the ECU makes no difference if you have a faulty sensor somewhere. Strange problems are difficult to diagnose.

 

It is better to let the agent workshop solve it, although you pay more but may end up cheaper if outside mechanics leads you on a wild goose chase of changing this and that for testing.

[Vtim]

don't think reseting the ECU will help anything. Any CEL? if there is, can get a scantool to check which sensor is giving the problem

[Friendstar]

does it happen frequently with korean rideS?

[Toalson]

No CEL thus scan no use.

[Toalson]

Will give it another try with another mech as suspect previous mech was pulling a fast one on me. Anyway, even if to the AD still will trial and error if not wrong.

Edited December 14, 2008 by Toalson

[Toalson]

U hv a bias against korean cars?

[Vtim]

better change to a more experience mech

[Blue850r]

Sensor failure happens to all brands of cars. My 3 year old corolla 60,000kms also got idle control sensor spoil before, $300+ to fix it. But CEL light came out. I repair it outside and it is almost Borneo Motor repair price also.

 

That is why I advise forumers to go back to agent. Sensor price is about the same if purchase from Agent or outside spare part shop. Labour is very low because it is like take out 3 screws and rebolt. Labour cant be high.

 

Korean cars suffers mainly on rubber parts cracking due to premature hardening. Machanical parts are quite OK.

[Blue850r]

Generally Agent workshop dont need to trial and error because they have the experience. Everyday they fix so many cars of the same type.

 

Even in worst case, agent goes on trial and error method, they dont need to buy the parts to swap and try. IN the case of outside workshop, If not correct, they cant return the parts back to sparepart shop, so owner have to bear the parts cost while they trial and error.

 

So safer to go back to agent. Changing sensor dont cost a lot more compared with outside workshop because labour charge is based on hourly charge.

[Toalson]

Thanks today went to another mech and then symptoms disappear and not recorded on ECU cos never have CEL on this issue. Just got actuator cleaned and changed air filter which was horrible state. Previous mech didnt changed it during 10K servicing.

 

We went for 2 rounds of test drive and problem didnt surface again. Car throwing tantrums cos know that we would like to change it. lol

[Blue850r]

Well keep your fingers cross

[Toalson]

Yup everything that can be cross shall be cross....

[Kb27]

I cleaned my own IAC sensor by spraying cleaner into it. My getz is manual so I don't know how this would affect auto gear.

As the throttle body can get dirty by blowby gas, some of these might go into idling valve and gummed up from inside.

[Toalson]

Well I just have to keep my fingers crossed for time being.