Hi,

I had a problem a few months ago where I had several fault codes, see thread http://briskoda.net/octavia-i/anyone-changed-ecu/135538/

I replaced the power relay to the ECU and all was well until about 2 weeks ago and the car went into fault again. Slowly it became more frequent, now its permanent.

The car now wont rev over 3000RPM and has no pull to go anywhere. If you try to accelerate over 2500rpm while on the move the car rattles (like a pinking sound) with plumes of smoke out of back.

The fault comes after 10-15 minutes of driving from cold.

A scan gives the same codes as last time,

17946 - Fuel Shutoff Solenoid (N109): Open or Short to Ground

P1538 - 35-00 - -

17849 - EGR Valve (N18): Open Circuit or Short to Ground

P1441 - 35-00 - -

19561 - Valve for Intake Manifold Flap (N239): Open or Short to Ground

P3105 - 35-00 - -

18027 - Glow Plug Relay (J52): Open or Short to Ground

P1619 - 35-00 - -

17957 - Boost Pressure Regulation Valve (N75): Open or Short to Ground

P1549 - 35-00 - -

and DTC memory code occasionally.

I have cleaned the relay sockets, ECU connector, fuse holders, fuses and the connectors under the plastic cover under the wiper motor with switch cleaner then with some silcone grease and it made no difference (simalar cage mod).

The solenoids measure about 15 ohms, except the N239 which is 30 ohms.

I drove around with a volt meter connected into the N75 12V supply and it never moved below 14.2 volts in fault or not in fault. Fuel shut off sol alway about 14Vdc also.

I have cleaned and made new ground connections for ECU still with no affect.

Opened the ECU power relay and checked the contact and theyre ok.

The only thing i can think left is to rip a branch off a tree and start whipping the car bonnet with it and swearing at it.

Would anyone have any better suggestions at all.

Im going for a little cry now.

Thx

:bump: