The Corsa problem solver

maxhorne4 said:
Hi There

Thanks for the response

Sorry if got no idea where this throttle position sensor is?

How do I check if its faulty?

So when the Map is diconenected and the revs fall back to just under normal and connected again causing the revs to shoot up again is not an Indication that the Map is faulty?
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No necessarily, it could just be the computer recognizing the missing signal from the Map sensor. I will look for a picture.
 
It's not easy to test it as you won't know what reading are right, but uncontrollable high idle is usually as a result of that, first wiggle it and see if it's not loose, if it is you will hear a change in the idle speed.

You can disconnect it and hope the computer reverts to some default settings but you will have to get a new sensor.
 
Circled in orange. The other one is an idle control valve, you can remove it and clean for good measure but it usually result in low idle not what you are experiencing.

IMG_20210321_184146.jpg
 
Got you!!! Thank you once again..
What does the Map sensor do?
Maybe I'm not explaining correctly why I'm thinking it's the Map sensor with my limited experience ...lol

Is there any other way to communicate?
 
Wow ok...thanks...jip it's one marked in orange

Let me try and explain why I'm thinking it could be the MAP ...I'm not doubting your knowledge and advice just trying to figure it out ....please correct my apofises

So car idles very high..I keep it idling, then

Remove the plug going to idle control valve

Remove the green plug going to Map

Car idles very strange/low

Re connect the idle control valve....idling goes little better and goes up just under 500rpm

Re connect MAP....idle almost normal then shoots up to the 4-5000rpm

This is a play by play of what I did and the reason for my thinking

Please if you can revert on this?
 
maxhorne4 said:
Wow ok...thanks...jip it's one marked in orange

Let me try and explain why I'm thinking it could be the MAP ...I'm not doubting your knowledge and advice just trying to figure it out ....please correct my apofises

So car idles very high..I keep it idling, then

Remove the plug going to idle control valve

Remove the green plug going to Map

Car idles very strange/low

Re connect the idle control valve....idling goes little better and goes up just under 500rpm

Re connect MAP....idle almost normal then shoots up to the 4-5000rpm

This is a play by play of what I did and the reason for my thinking

Please if you can revert on this?
Click to expand...
The effect you are seeing when you disconnect the Map sensor could just be a response by the ECU to the missing signal from the Map, the idle will be affected even if it was idling properly.

I am not saying it's 100% not the Map sensor, I am just saying it's unlikely in my opinion, do you get an engine light? A faulty map sensor usually results in erratic idling or misfiring.

Lastly, I am not a mechanic or someone who is knowledgeable in cars, I have a Corsa that I have owned for a long time now, I've had the high idle, it wasn't the Map sensor, but don't take my advice as professional advice.
 
TheChamp said:
The effect you are seeing when you disconnect the Map sensor could just be a response by the ECU to the missing signal from the Map, the idle will be affected even if it was idling properly.

I am not saying it's 100% not the Map sensor, I am just saying it's unlikely in my opinion, do you get an engine light? A faulty map sensor usually results in erratic idling or misfiring.

Lastly, I am not a mechanic or someone who is knowledgeable in cars, I have a Corsa that I have owned for a long time now, I've had the high idle, it wasn't the Map sensor, but don't take my advice as professional advice.
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Thank you for taking the time and trying to assist me..fully understand but you have paid the school fees as they say and have had these type of experiences and learned from them..so your opinion is of value

Will start at a point tomorrow...hopefully the spare shops are open in Durban tomorrow..lol
 
maxhorne4 said:
Thank you for taking the time and trying to assist me..fully understand but you have paid the school fees as they say and have had these type of experiences and learned from them..so your opinion is of value

Will start at a point tomorrow...hopefully the spare shops are open in Durban tomorrow..lol
Click to expand...
Try testing it if you have a multimeter, it's in an awkward place to work on and you will need the torx key set. But It will be hard if you don't know what the specs are supposed to be.
 

opel corsa lite loss of power and heavy fuel smell

Hi Guys I have a corsa lite 2008 model. Recently is has gotten so bad with power and a heavy fuel smell. Is it possible this could be the Fuel presure Regulator. When i stop. i have to rev all the way to get going and as soon as my rev gage reachers 4000 then the car power will kick in. BUT...
mybroadband.co.za mybroadband.co.za
 

Selecting gears

My name is Vusi My Corsa lite 1.4 model 2004 is struggling to select gears. This started when a bad mechanic replaced a clutch kit. Some people say gearbox oil needs to be filled or changed and some say it's linkages. Any advice? Kind Regards Vusi
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thestaggy said:
Yep, my coil pack went last year.

On a few occasions before that it would sometimes idle very low, almost spluttering and felt flat when I accelerated. I would clean the throttle body and that seemed to sort it out. However, last year I started it up after work one day and it drove like it was running on 2 cylinders. Low idle and with my foot flat it wouldn't go past 80 km/h. Got home, cleaned the throttle body again and no luck. Took it to my mechanic and the first thing he said was the coil pack. Replaced it and now she runs like a dream again.
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Is this the Corsa B or C with the coil issues? I had a Corsa C now dearly departed after a roll over accident. It died at 422000km. Never had a coil issue, or a starter or alternator issue. Still had original CV joints except the one inner that broke one time. New clutch at about 370000km, and had to replace the gearbox selector forks a few months before it died which I did myself because the gearbox can come apart without taking it out the car. Was a great reliable little car.
 
Mekon said:
Is this the Corsa B or C with the coil issues? I had a Corsa C now dearly departed after a roll over accident. It died at 422000km. Never had a coil issue, or a starter or alternator issue. Still had original CV joints except the one inner that broke one time. New clutch at about 370000km, and had to replace the gearbox selector forks a few months before it died which I did myself because the gearbox can come apart without taking it out the car. Was a great reliable little car.
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It is a Corsa D.

Touch wood, but I've had it since 2011 (2010 model) and aside from the coil pack and a steering boot, it has been rock solid. It is 10-years old though, so I can't be too surprised if things start packing up.

I would replace it with something newer if I could, but the car has been paid off for years and I can't really financially justify a replacement.
 
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Mekon said:
Is this the Corsa B or C with the coil issues? I had a Corsa C now dearly departed after a roll over accident. It died at 422000km. Never had a coil issue, or a starter or alternator issue. Still had original CV joints except the one inner that broke one time. New clutch at about 370000km, and had to replace the gearbox selector forks a few months before it died which I did myself because the gearbox can come apart without taking it out the car. Was a great reliable little car.
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Funny that because the C and B uses the same coil pack, I've had to replace it a couple of times on my B, it could be a problem of non OEM parts though since GM wanted an arm and a leg last time I checked.
 
TheChamp said:
Funny that because the C and B uses the same coil pack, I've had to replace it a couple of times on my B, it could be a problem of non OEM parts though since GM wanted an arm and a leg last time I checked.
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If you get a aftermarket part get a Huco. They apparently good. Replaced my Audi coil pack with a Huco amd it lasted the 5 more years I had the car.
 
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