MIL On.. ECM Dead... Need Help Diagn.

[richemj]

I have had the MIL on my '97 Jetta TDI on for about 1500 miles. Dealership performed diasgnostic. No specific code returned, other than ECM failure. Dealer recommendation... get new ECM $1496! I have noticed a drop in performance and milage (from 500 in city to 450/425 in city). Smoke noticed ~2400 rpm instead of normal ~3200 rpm. Any ideas how to properly diagnos and fix without a $1496 ECM switch out.
Thanks.

 

[dogbreath]

There is a vacuum line leading to the ECU from the intake manifold. There is also a vacuum line inside the ECU, the one inside has probably weakened and the walls are collapsing under vacuum. 10mm wrench,T15 Torx, and about 3 inches of vacuum line are all you need. Had similar problem with my '97, now runs like new...

 

[dogbreath]

There is a vacuum line leading to the ECU from the intake manifold. There is also a vacuum line inside the ECU, the one inside has probably weakened and the walls are collapsing under vacuum. 10mm wrench,T15 Torx, and about 3 inches of vacuum line are all you need. Had similar problem with my '97, now runs like new...

 

[wolfsburg_de]

Even if you need a new engine computer, get it from www.car-parts.com

Swap it yourself, a couple hundred $$$. Use the leftover $1000 to give gifts to your self, your missus, and me.

[ January 22, 2003, 15:18: Message edited by: wolfsburg_de ]

 

[MITBeta]

Does the car run? If so, it's not the ECU. I'm pretty sure that the car won't function if the ECU has failed.