The Corsa problem solver

TheChamp said:
Not foolproof since it could be failing under load, when mine was busy failing it still passed the removal of terminal test, but the car would randomly cut out while in motion when the aircon is on, took a long while before the alternator finally gave up.

Also check the grounds.
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I’ll replace the alternator on Tuesday just to see if the issue persists
 
TheChamp said:
There's a whole set of fuses that protects the circuit in case of a short, there should be no need for replacing all the things you have replaced.

But yes, stop buying anything else and get a mechanic.
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I’m going to go to a mechanic on Monday the give feedback
 
Good afternoon all
I got my issue resolved today
My mechanic replaced the interior LED with the original yellow globe and then the issue didn’t happen again

So I’m gonna drive for a while and see if it happens again
 
I was hoping I didn't have to come to this thread, but here I am at a complete loss and thought some poor soul would have encountered this issue and what the fix would be.

What's wrong?
Engine cranks but refuses to start. No flashing car with spanner icon on dash, only engine light is illuminated. All other electrical components work such as windows, lights, indicators etc.

Corsa C Gamma 1.8 Sport
Diagnostic Scan results:
Immobiliser 2 Alarm
B3040 - Communication Engine Management Unit
B3059 - Request Engine

Body Control Module
U2105 CAN No communication with ECM / ECU

Technician that performed diagnostic stated that the ECU is responding along with the immobiliser receiving the signal from the keys. But couldn't definitely say where the issue is.

What's been checked?
All fuses and relays.
All fuses in BCM box (next to the battery) that contains BCM. Not sure how to check BCM?
Both plugs on ECU visually inspected / re-seated.
Earth contacts in order from battery > body > ECU.
Tried using spare key to no avail. (Both keys are working and sending signal to immo)
Crank sensor replaced (thought I would get lucky)

Where to from here?
Need to find a reputable autolec, however where I am situated makes this a challenge.
Visually inspect wires leading to ECU and look for a break.
From all the research I am led to believe a "W" line fault that would need to be traced.
Pull the display cluster and check behind for anything suspect

I will spend the weekend trying to find the "W" line from immo to ECU. In the meantime, perhaps someone comes along and saves the day.
 
Bastard Corsa. Driving home and I pulled away at the stop Street. Heard a bit of a bad mechanical sound and now when I put the car into gear it won't move. It looks like one CV shaft is turning when the car is in gear but there is no drive power. Anybody got any ideas? I'm hoping it's a buggered CV joint as it's on the side that I had replaced 6 months ago but I'm worried it's the gearbox or something else?
 
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Jam Sandwich said:
Bastard Corsa. Driving home and I pulled away at the stop Street. Heard a bit of a bad mechanical sound and now when I put the car into gear it won't move. It looks like one CV shaft is turning when the car is in gear but there is no drive power. Anybody got any ideas? I'm hoping it's a buggered CV joint as it's on the side that I had replaced 6 months ago but I'm worried it's the gearbox or something else?
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Perhaps it popped out on the gearbox side if it wasn't properly pushed in, did you remove the whole shaft when you were doing it?

I doubt it could be the gearbox, it's kinda hard to break those.
 
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TheChamp said:
Perhaps it popped out on the gearbox side if it wasn't properly pushed in, did you remove the whole shaft when you were doing it?

I doubt it could be the gearbox, it's kinda, hard to break those.
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I had a mechanic change them. Ill see him tomorrow. I think you may be right about it coming out..
 
For them to come out there must be something major not tightened down on that suspension .... Im thinking main nut on CV, balljoints will all have to be loose for that shaft to move :unsure: ... for them to be loose you would feel rattle on steering. ... This could be clutch-plate related?
 
Dimpie (COMPUTEK) said:
For them to come out there must be something major not tightened down on that suspension .... Im thinking main nut on CV, balljoints will all have to be loose for that shaft to move :unsure: ... for them to be loose you would feel rattle on steering. ... This could be clutch-plate related?
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If the cv is not inserted deep enough for the retaining clip to engage, it can come loose while all the ballpoints/connections etc. are perfect.

You will notice an oil leak as well.

In the two that I've seen, it damages the splines on the end of the cv.
 
Dimpie (COMPUTEK) said:
For them to come out there must be something major not tightened down on that suspension .... Im thinking main nut on CV, balljoints will all have to be loose for that shaft to move :unsure: ... for them to be loose you would feel rattle on steering. ... This could be clutch-plate related?
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They can come out from the gearbox side if not properly popped in, it is just a circlip holding it.
 
TheChamp said:
It's a Corsa lite, what will the backyard mechanics eat if you don’t even give them that job? And not like CVS are complicated pieces of kit, I once did mine from YouTube videos.
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It's easy but they screwed it up. 🤣
 
I was doing some basic servicing on a family member's Fiesta, interesting setup they have on the CV joints and drive shafts, and very impressive since it's not some high end car.

Instead of the short and long shaft as it's usually the case in most FWD cars, the shafts are equal in length, with a solid propshaft like rod extended on the side of the far wheel that connects to the an inner CV joint and a shaft to the wheel.
 
Rickster said:
It's easy but they screwed it up. 🤣
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No one ever does the inner CVs as they never break due to the way they operate, it could have been one of those rare instances where they gave up. My car is 20 years old and has never had those done, but it's still a wear and tear item.
 
HobieDave said:
If the cv is not inserted deep enough for the retaining clip to engage, it can come loose while all the ballpoints/connections etc. are perfect.

You will notice an oil leak as well.

In the two that I've seen, it damages the splines on the end of the cv.
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I once met a chap who wlded his solid for that reason, he said it kept popping out and one day he just got tired and sorted it out, once and for all.
 
Rickster said:
Backyard mechanic?
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Nope, local mechanic ive used for last 25 odd years. I woildnt use him for a newer high end car but this is an 2002 model. No aircon or power steering or anything fancy. Body. Engine. Wheels.
 
TheChamp said:
I once met a chap who wlded his solid for that reason, he said it kept popping out and one day he just got tired and sorted it out, once and for all.
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Seems its the outer. So long as its not the gearbox....
 
Mike Angelo said:
From what I remember there is a lot of free play there which can let it pop out if you maybe hit a pothole or there is extra tension or movement up and down on the axle.
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Not really a lot, it is like a cm or two of outward movement to compensate for the wheel turns, and it's done in such a way that it's just the joint part that goes inside the cup that moves, not the one going into the gearbox.

So it honestly seldom fails unless there was some disturbance. Maybe if you messed up with the suspension it could happen but generally the suspension is able to absorb an occasional pothole.
 
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