Sly_SRi
Premium Member
Registered: 9th Apr 04
Location: Reading, UK Drives: Corsa C
User status: Offline
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So I was driving my Corsa along, was all running fine, boosting normally etc and then suddenly the engine management light came on and it stopped boosting.
The boost gauge (which reads -10 during idle) will only boost up to zero but not beyond.
If I can't figure it out I'll be taking it to my local garage later in the week but thought I'd just ask on here in case anyone knows what it could be and save me some money!
Further info, the fault codes fro the Ecu were related to: throttle pedal & coolant temp
Any help appreciated!
Corsa C Z20Let
Black Sleeper Turbo Project
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Corsa_Sport21
Member
Registered: 13th Apr 08
Location: Leven, Fife. Drives : 205 GTi
User status: Offline
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Boost leak or wastegate stuck open would be the 1st things i would check.
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Sly_SRi
Premium Member
Registered: 9th Apr 04
Location: Reading, UK Drives: Corsa C
User status: Offline
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How exactly do you check the waste gate? We gave it a twist with some pliers to see if it was stuck and it moved, but not sure if that's a good enough test?
Corsa C Z20Let
Black Sleeper Turbo Project
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Sly_SRi
Premium Member
Registered: 9th Apr 04
Location: Reading, UK Drives: Corsa C
User status: Offline
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And btw, the dump valve in my dp is no longer installed.
Corsa C Z20Let
Black Sleeper Turbo Project
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Sly_SRi
Premium Member
Registered: 9th Apr 04
Location: Reading, UK Drives: Corsa C
User status: Offline
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Fault codes:
P1530 A/C Relay Voltage High Air Conditioning System B-10
P0530 A/C Refrigerant Pressure Sensor Circuit High Input Air Conditioning System B-05
P0530 A/C Refrigerant Pressure Sensor Circuit Open Air Conditioning System B-05
P0650 Malfunction Indicator (MI) Control Circuit High C-36
P0650 Malfunction Indicator (MI) Control Circuit Open C-36
P0115 Engine Coolant Temperature Circuit High Input C-11
P0115 Engine Coolant Temperature Circuit Low Input C-11
P0115 Engine coolant temperature circuit malfunction C-11
P1122 Accelerator Pedal Position Sensor 2 High Input C-08
P1122 Accelerator Pedal Position Sensor 2 Low Input C-08
P1120 Accelerator Pedal Position Sensor 1 High Input C-08
P1120 Accelerator Pedal Position Sensor 1 Low Input C-08
P1120 Accelerator Pedal Position Sensor 1-2 Correlation
Corsa C Z20Let
Black Sleeper Turbo Project
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DERV-POWER
Member
Registered: 13th Sep 09
Location: Greenfield, Flintshire
User status: Offline
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I d go with new throttle pedal and ect sensors first then
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Sly_SRi
Premium Member
Registered: 9th Apr 04
Location: Reading, UK Drives: Corsa C
User status: Offline
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quote:
Originally posted by DERV-POWER
I d go with new throttle pedal and ect sensors first then
The throttle pedal is opening the throttle body fine, does that rule it out as being faulty?
Corsa C Z20Let
Black Sleeper Turbo Project
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john_c20xe
Member
Registered: 10th Feb 08
Location: Eastbourne, EastSussex
User status: Offline
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its possibly in limp mode, this maybe why its not boosting the ecu is probly cutting the boost. if your coolant temp sensor is faulty it maybe chucking in too much fuel or the other way around,
Your throttle pedal should be fly by wire so wont be cable operated, there can still be a fault with either the pedaql of the throttle body with it working ok,
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Corsa_Sport21
Member
Registered: 13th Apr 08
Location: Leven, Fife. Drives : 205 GTi
User status: Offline
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Have you checked for boost leaks??
I would n't have thought limp mode would totally cut the boost altogether. Normally it would just make it run crap, but still try and give some boost, just with a shit load more fuel pumping through.
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