- Vauxhall Astra 1.8 1999 X18XE1 - Poor running and idle P0505 idle speed voltage high # Archived Message
- Vauxhall Astra 1.8 1999 X18XE1 - Poor running and idle P0505 idle speed voltage high # - Phil Dunmore March 14, 2007, 9:43 pm
- Re: Vauxhall Astra 1999 1800 X18XE1 idle speed control - Alex Walker March 15, 2007, 6:22 pm
- Re: Vauxhall Astra 1999 1800 X18XE1 idle speed control - Steven Humphreys March 15, 2007, 7:42 pm
- Re: Vauxhall Astra 1999 1800 X18XE1 idle speed control - Steven Humphreys March 15, 2007, 7:42 pm
- Re: Vauxhall Astra 1999 1800 X18XE1 idle speed control - Darren Bamford March 15, 2007, 8:54 pm
- Re: Vauxhall Astra 1999 1800 X18XE1 idle speed control - Phil Dunmore March 19, 2007, 10:14 pm
- Re: Vauxhall Astra 1999 1800 X18XE1 idle speed control - Alex Walker March 15, 2007, 6:22 pm
Posted by Phil Dunmore on March 14, 2007, 9:43 pm
Looked at this today for another garage who have fitted two new throttle bodies trying to cure poor running & an idle speed code. Had set P0505 Idle speed control voltage high, not present. Stepper motor operated correctly on actuator test. After a test drive MIL on, code P0505 present, no response on actuator test. Checked continuity to ECU, OK. Allow engine/ecu to cool and it comes back to life. Have a square wave when cool, flat line when hot. Is this common? Is there a bypass trick (like the air mass earth that is common)? Can these ECU's be repaired? Would relocating ECU to keep it cooler help? I am presuming the heat is conducted from engine rather than generated internally. |
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