90' Audi 200 power cuts out when you mash the gas, check engine light appears??

[jerbele]

I have a 90' Audi 200 with auto transmission that has approx $7000-8000 in maintenance the last four years by an Audi tech privately so it has not been neglected by any means. When you mash the gas down on the highway or at about 25mph or higher eventually the power cuts out and the orange check engine light appears?? No vaccum leaks either unless its one the is undetectablly small? From what I've read it mmmight be the throttle switch? I have no idea cause most the reading you find about this car is from the 91' 20v quattro version, so I'm not sure if the same things apply or not. Any suggestions as to what it might be?

thanks,

josh

[audiqv8]

Originally Posted by jerbele

I have a 90' Audi 200 with auto transmission that has approx $7000-8000 in maintenance the last four years by an Audi tech privately so it has not been neglected by any means. When you mash the gas down on the highway or at about 25mph or higher eventually the power cuts out and the orange check engine light appears?? No vaccum leaks either unless its one the is undetectablly small? From what I've read it mmmight be the throttle switch? I have no idea cause most the reading you find about this car is from the 91' 20v quattro version, so I'm not sure if the same things apply or not. Any suggestions as to what it might be?

thanks,

josh

Even though this question was posted over a year old I will post my view.

So you go to 'mash down on the gas pedal' with a lost in power and then the check engine light is coming on. Your lost in power is because the ECU for some reason is detecting that the engine is knocking and is retarding the timing (this is causing your lost in power) and the check engine light is letting you know that the ECU is retarding the timing.

Is the engine making any strange noises? What octane gas is in the car? You can try going to a higher gas octane. Was any modification done on the car to improve performance? You could also check/replace the knock sensor.