205 GTi Starter Motor Solenoid Problem

Hello,

The solenoid on the starter motor of my 205 GTi has developed a 'short' so
the motor keeps running after the engine has started. The starter will only
stop turing after the flylead has been disconnected. Is this likely to be
repairable?

Normally I'd just buy a new one, but they are pretty expensive and the damn
thing is only a few hundred miles old :-( I thought I could see if I fix it
while it was off the car. Any ideas? It's a Valeo if that makes any
difference.

Cheers

Neil

 

If by flylead you mean the small wire, then surely if it stops when
that is disconnected, then it must be getting a constant feed along
that wire. Which means the fault is more than likely to be the
ignition switch.

 

Yep, my mistake. The starter is OK. I was just getting confused by the
conflicting results I was getting during fault finding. I've spent ages
believing it to be the Tachyometric relay as some of the relays I have have
had the wire to solenoid go permanently live after an attempt has been made
to start the car. Other relays have initially shown this line to go back
down to 0v after the key has returned to position 2 from position 3... Then
they have shown the line to be permanently 12V again! None of the relays
are faulty as they work fine in a 309 GTi. It's been a very frustrating
weekend!

Now I believe the fault to be a wiring fault/sensor fault in the engine bay
involving the sensors connected *to* the tachyometric relay. Disconnecting
the water temperature sensor appears to restore normal operation. I'll put
the ECU back in, reconnect the other sensors and see if the starter motor
behaves properly.... I do hate wiring faults on a 16 year old wiring loom
:-(

Neil