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I found it, not behind the glove box but under the passenger side floor, I thought that was something for the ac unit, thanks for all your help Kevin maybe this is the entire issue? I will keep you updated

I have took everything apart to find the ECU, I have a pic of it from ebay and nothing looks like it.

So now my car is running great, one thing still bothers me is that I cannot read codes out of my car. So off to more research, I found a lexus forum sight late last night, they have mentioned that if you cannot get codes out of your ECU then you ECU is getting ready to go.Take it out and send it...

I found the issue, the throttle body seal that attaches to the intake manifold was broken, any way I took the entire manifold apart and clean everything for the EGR valve with was clogged completely. New plugs, fuel filter as well. Car runs great no codes now at all.

understood. Thanks Kevin

Ha banned from working on cars funny real funny, I have had this car to 6 different shops and none have a clue as to what is wrong with my car. So far I have done 85% of the work myself with out any failure. I just cannot figure out the last piece of the puzzle. I am not as deep into cars as...

I also got desperate and started to mess with the Idle stop adjustment, anyone know how to put it back to factory specs? Thanks Kevin

I cannot get the car to pull the codes, and either could Toyota for about 4hrs and yes they charged me for it. More information on this would be great.

Do you think that this will help cure some of my issue's? I am nervous about taking and knowing what items to take off of the car. Last weekend I could not get the EGR assembly off and when I pulled the part off that has the electrical connection on it, I heard something like a spring come off...

The check engine light came on again on the way home. I am almost to the point of just letting it go and not worry about it anymore. Does any one have an EGR valve assembly print? Does any one have any prints on where items are that I can dis-assemble and clean on my car?

I own a 1996 sc400, I paid $5000 for it 2yrs ago,with 160000. I have put around $2600 into it. Now has 192000. Timing belt,water pump, valve cover gaskets, steering boots, pulleys, radiator, brakes, tps, cat o2 sensors,and so on. About a year ago the check engine light came on, I took it to my...