Opel Corsa fuel supply problem

B00Gz said:
Nope stock alarm but I do have 2 UniQ chips
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Okay I have no idea what UniQ chips does, what is the fault code that you got? Replacing the relay was not going to help if it's not getting the right voltage, something is starving it of voltage hence I thought of the anti hijack.
 
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thechamp said:
Okay I have no idea what UniQ chips does, what is the fault code that you got? Replacing the relay was not going to help if it's not getting the right voltage, something is starving it of voltage hence I thought of the anti hijack.
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The chips allow the ecu to be fine tuned any I think the problem is with the injector signal direct power they spray so fuel pressure is fine, is the injector pulse positive or negative
 
B00Gz said:
9
The chips allow the ecu to be fine tuned anyway I think the problem is with the injector signal direct power they spray so fuel pressure is fine, is the injector pulse positive or negative. And I noticed while cranking for a few seconds the eml light comes on and stays on, if it's the IMMO it will blink?
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B00Gz said:
9
The chips allow the ecu to be fine tuned any I think the problem is with the injector signal direct power they spray so fuel pressure is fine, is the injector pulse positive or negative
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Sorry but I have absolutely no idea about the polarity of the injector pulses. Looks like your problem is slightly higher grade for any advice I can give, my Corsa is standard and at over 250k kms it has never given me any baffling problem.

Good luck, hopefully someone will come up with some advice that will lead to a solution.
 
thechamp said:
Sorry but I have absolutely no idea about the polarity of the injector pulses. Looks like your problem is slightly higher grade for any advice I can give, my Corsa is standard and at over 250k kms it has never given me any baffling problem.

Good luck, hopefully someone will come up with some advice that will lead to a solution.
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Thanks for all your assistance by any chance you have any wiring diagrams, all the diagrams I can find are of the overseas market, it's different from our versions
 
Misfire said:
Pardon me "champ" but you've not much help here... just guess work and a whole lot of "oh you gotta have the last say"
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I know this is an old post... I strongly disagree with what you said about The Champ as he has given me a lot of information and suggestions to my corsa problems and he has been spot on with his diagnosis
 
Richard_C said:
I know this is an old post... I strongly disagree with what you said about The Champ as he has given me a lot of information and suggestions to my corsa problems and he has been spot on with his diagnosis
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I honestly never understood why the guy was angry with me, he snapped out of the blue, it must have been the stress caused by the car.
 
TheChamp said:
I honestly never understood why the guy was angry with me, he snapped out of the blue, it must have been the stress caused by the car.
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True you and Stokstert have helped me a hell of a lot sorting my problems out. Btw I have a few more problems I need advice on I'll post a new thread for that. One issue is this thread here
 
hi i have a opel corsa lite plus 1.4 model 2005 my car is over fueling what can be the problem i did change the injectors, oil,oil filter, spark plugs, cooling temperature sensor but its still over fueling
 
ReganM said:
1) Test the mass airflow sensor. If the engine cuts off a few seconds and the fault light comes on while driving, it may be the mass air flow sensor. (YouTube shows how to test it).

2) The fuel pump relay should also be tested.


You have an OBD2 port, so diagnostic plug in equipment can give the error codes.
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ReganM said:
Opel Corsa lite 1.4
I had a similar problem, after driving for 20 minutes the car would just switch off and it would start up immediately or I would just kick start when it switched off, eventually it started doing this often, so I replace the crankshaft sensor at first, didn't help, then then I replaced the fuel pump relay, that resolved the problem.
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Sorry to reply to an old question, I am having the same problem, have changed fuel pump, fuel relay on the bonnet, MAP sensor, crank sensor but still can't help, was told there's a relay next to the pedals but I didn't find any, please help
 
Nelani@78 said:
Sorry to reply to an old question, I am having the same problem, have changed fuel pump, fuel relay on the bonnet, MAP sensor, crank sensor but still can't help, was told there's a relay next to the pedals but I didn't find any, please help
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On my 2002 Corsa B the fuel pump relay is down on the right by the accelerator pedal behind a plastic panel.
 
Jam Sandwich said:
On my 2002 Corsa B the fuel pump relay is down on the right by the accelerator pedal behind a plastic panel.
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On the chev Corsa utility bakkie,gamma, I didn't find any relay there, only 6 or 7 wire pinned to a 3 or 4 wire female socket was found there
 
Nelani@78 said:
Sorry to reply to an old question, I am having the same problem, have changed fuel pump, fuel relay on the bonnet, MAP sensor, crank sensor but still can't help, was told there's a relay next to the pedals but I didn't find any, please help
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As in the same, exact problem?
 
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