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[family guy]

hi all, i wish to share with you all a strange day ive had with my omega-

basically all has been well until i got in the car todrive to work this morning. started her up which she done reluctantly, was turning over but needed some gas to make her fire-never had to before. drove off on my way-lardy dar- got to a set of lights and the whole car started shaking and the idle was fluctuating between 350-650rpm(very approx tho). light goes green i drive off no problems.get to work and park up and the EML light comes on and again the revs start fluctuating between the aformentioned rpms. hold the revs at 4krpm and the light goes out, release gas anf the revs still wont stay still. i would like to add that its less then a 2 mile drive to work and the engine temp gauge had only moved a bit.

anyway after work i spray some WD40 round the engine bay-she fires up straight away but after the initial high rpm ones again it goes lumpy and fluctuates but this time no EML. decide to give her a blast on a different route home. get to a junction bowt 1/4 mile from my place of work and...nothing-she sits there smooth as a nut at a dead 500rpm-no shaking, no EML and no fluctuating.

seems very strange to me- anyone have any idears? idle control valve is starting to die? also are you suposed to hear air going through the big flat thing on top of the engine? (no i dont know what its called) i dont think its leaking but i can definately hear air inside it.

so people?   

forgot to add its a 2000 cdx 2.5 v6

[RobG]

First port of call is "paperclip test" see what code/s are stored
http://www.omegaowners.com/forum/YaBB.pl?num=1189022687

[family guy]

paperclip test would be usless with me,. i read the guide and watched the video but they make no sence at all. for example in the video it does not flash 55 times yet underneath it says 55-ecu failure, i cant make head nor tale of it.

[RobG]

paperclip test would be usless with me,. i read the guide and watched the video but they make no sence at all. for example in the video it does not flash 55 times yet underneath it says 55-ecu failure, i cant make head nor tale of it.

It won`t. Code 55 would be 5 flashes.......pause........5 flashes

[albitz]

Air rushing through the big flat thing (aka the plenum) is normal.
As Rob says, paper clip test is your starting point. each code repeats itself 3 times, so you dont miss it.Sequence begins and ends with code 12.
So - start of sequence is one flash-pause- two flashes.This happens 3 times, so you have just seen code 12 three times.The same thing will happen at the end of the sequence.
If you have for example, a code 19 you will see code 12 three times then one flash - pause- then 9 flashes (again, this will display three times) then assuming code 19 is the only fault code you will get code 12 (3 times) to end the sequence.
Spend a little bit of time sat in the car with a pen and paper writing down what you see, as number of times light flashes and it will probably become clear after a while.
It can be a little daunting the first time, but like most things, once youve done it once or twice it becomes easy.
Hope that helps, rather than causing more confusion.
if you still dont get it , dont be afraid to shout out again.We were all complete beginners once.

[family guy]

right- im certainly not guna suggest that this should be taken as gospel but i tried it and this is what i got-

12
31 (engine was off)
132
12

turned the ignition off, then on and got the same sequence.

looked up the codes and it said it relates to the egr valve but surely that would not affect the idling problem i mentioned- i thought that would affect the engine at all rpm's?

[family guy]

anyone have any idears? might need to clean the egr? where is it on the v6?

[RobG]

anyone have any idears? might need to clean the egr? where is it on the v6?

Blue arrows in pic
http://images.omegaowners.com/images/guides/v6_26_32_plenum_removal/NonDBW.JPG