Rpm Goes 2000 And Up Check Engine Light On Too

[gurugee]

Hi friends,

 

after done the oil change, Oil filter change and fully service my Leganza 2000Cc DOHC car, my check engine light is on now.

 

i have notice these things,

 

after i start, in ideal mode few seconds my check engine light on, & i can see my RPM goes high and high. some times it goes up to 3000 r/mins.

 

but when i A/C on its coming down to my ideal mode to 1000-900rpm.

 

please help. I checked with service station & they said they spray water to top of my engine but my engine was coverd and they only wash the flud around it. ( so i am confused did any water damege to my sensors)

 

Please help me (">

 

Prasad

from sri lanka

[Mircea]

You will have to scan your ECM to see the error code. First of all, try to reset your ECM and then make idle learn procedure, and see if the error occur again.

[gurugee]

can you please tell me how to scan the ECM, I remove battery cable one night and fixed it but i did not do the dle learn procedure, is it a probelm?

 

If i reset battery again and do it will be a probelm?

 

Please advice me

[Mircea]

Here you go: http://www.daewooclub.ro/forum/index.php?s...mp;#entry117585

And yes, it is a problem to remove batery cable and not doing the idle learn procedure.

You don't have to remove batery for whole night, 10 minutes are enought.

After you will do the reset and idle learn, if the eror occur again, go to service and scan ecm for errors and tell us the results.

[gurugee]

Hi,

 

Tkz for the information really helpful, i will do the dle learn procedure again and see what is the error code, but i do not know in Sri Lanka wher i can find a place to scan this ECU never heard such a thing.

 

do you think any problem with my IAC ( i dont know what it is), also note when my car at the service station, they clean arround the engine with high presure water pumps and down the car as well. so i am bit worry any water damage.

 

as i marked when the AC on the RPM comes down to 900-1100. without AC idle mode show me 2000-3000 Rpm.

 

Please help. i will try to find ECU scan place.

[Mircea]

Make the reset and idle learn as I told you. Is easy, and you can make it right now. After search for a scaner daewoo, if you still have the eror.

[gurugee]

hi,

I did reset the ECU and did the idle process, but still its same rpm is going high after few second and check engine comes on please help.

 

is there any thing that i can check for this any censors??

[tolin]

Check IAC (Idle Air Control) valve, first.

Edited July 26, 2007 by tolin

[gurugee]

I remove IAC as per pictures and i clean it and plug it but i've notice it doesn’t working properly the head go front and back but it makes my idle 2000-3000. Seems its not controlling well.

 

is there any sensor attached to IAC ( which controls that, r anu fuse?) please help still i am having same problem with check engine light.

 

as per my knowledge IAC is working and, if its control by some other electric unit its make my Idle up, cus of that my IAC is not under control. ( the reason i am tell IAC work, its head go front and back- is it correct?)

 

but in Sri lanka there is no place to scan my ECU since there is no agent how much this scan unit cost?

 

please reply.

[Mircea]

After you remove the IAC, you must make the Idle Learn again, so your ecm learn idle rpm.

Without a scan, you cannot know for sure what is the problem. All you can do is try with another IAC or with another TPS sensor.

But the check engine ligh can be on by various causes...

[gurugee]

After you remove the IAC, you must make the Idle Learn again, so your ecm learn idle rpm.

Without a scan, you cannot know for sure what is the problem. All you can do is try with another IAC or with another TPS sensor.

But the check engine ligh can be on by various causes...

 

what is TPS sensor.? please show me the picture of it? just wanna check that too?

i ran the idle process you mean this right?

 

 

Turn the ignition ON for 5 seconds.

Turn the ignition OFF for 5 seconds.

Start the engine in park/neutral.

Allow the engine to run until the engine coolant is above 185° F (85°C ).

Turn the A/C ON for 10 seconds, if equipped.

Turn the A/C OFF for 10 seconds, if equipped.

If the vehicle is equipped with an automatic transaxle, apply the parking brake. While pressing the brake pedal, place the transaxle in D (drive).

Turn the A/C ON for 10 seconds, if equipped.

Turn the A/C OFF for 10 seconds, if equipped.

Turn the ignition OFF. The idle learn procedure is complete.

 

 

but no work for me, please await for more suggestions

[Mircea]

The idle learn is correct.

Can you find another IAC from a friend, and check with it?

The TPS sensor is on the axle of throtle, on the opposite end of the cable, under the IAC.

[tolin]

... The idle learn is correct ...

5 or 10 s ?

[Mircea]

5 for ignition on/off, 10 for AC on/off.

[tolin]

Are you sure ? Ask le patron, sorry, the "local baron".

[Mircea]

Yes, I am

[gurugee]

hi guys,

 

i am sorry to say still i did not get any reply reg: my problem. please reply me any new suggestions to check this. or any other way to disable Check engine light. i am so fedup.

[Mircea]

Sorry, but until you do not scan your ECM, either with SCAN100 or with electronic interface, laptop and dedicated program, and find out the eror code, we cannot help you There are a lot of causes that can make the engine light to go on, starting with a defective sensor (and they are plenty of!) and further more.