Seized Crankshaft

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Re: Seized Crankshaft

Post by R56WUF » Tue Sep 18, 2018 6:55 pm

I had used Star Performance when I had my previous C5 but I personally haven’t found the service the same when I’ve made enquiries with them over the last twelve months or so.
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Re: Seized Crankshaft

Post by Special K C5 » Tue Sep 18, 2018 8:08 pm

I took mine to A for Audi in Clydebank and they were spot on


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Re: Seized Crankshaft

Post by V!per » Tue Sep 18, 2018 8:59 pm

I had something like that in a VW Polo and it was a foobard ignition barrel/switch ?!?!?! - i think that's how it was called.
I thought it was a battery issue. but when we were towing the car I managed to jump start it. Ran without any issues.

Just an idea

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Re: Seized Crankshaft

Post by bilko1 » Wed Sep 19, 2018 10:39 am

Have they checked the main battery connections / mega fuses that corrode in the scuttle area?
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Re: Seized Crankshaft

Post by R56WUF » Wed Sep 19, 2018 12:06 pm

The focus so far has been mechanically on the engine, however I’ve spoken with Grizz this morning at Unit 20 and I think I’ve made my mind to have it taken there. I’m still not convinced that there is anything majorly wrong with the car and I’m keen to get some form of accurate diagnosis made. Grizz hasn’t seen any C5s with a seized crankshaft so, while it is of course possible, I don’t really want to start chasing symptoms in the engine if the fault lies elsewhere.
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Re: Seized Crankshaft

Post by chunky79 » Wed Sep 19, 2018 1:46 pm

R56WUF wrote:
Wed Sep 19, 2018 12:06 pm
The focus so far has been mechanically on the engine, however I’ve spoken with Grizz this morning at Unit 20 and I think I’ve made my mind to have it taken there. I’m still not convinced that there is anything majorly wrong with the car and I’m keen to get some form of accurate diagnosis made. Grizz hasn’t seen any C5s with a seized crankshaft so, while it is of course possible, I don’t really want to start chasing symptoms in the engine if the fault lies elsewhere.
Good choice, although I think any competent mechanic should be able to work it out. Going on that video, I think its an electrical issue.
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Re: Seized Crankshaft

Post by R56WUF » Wed Sep 19, 2018 2:55 pm

I simply find it hard to believe that a engine that has so recently had the works completed to it has given up when I literally switched the car off within 20 metres of the first symptom, and absolutely no warning lights or changes to the dial readings.

As before, I’m not questioning the chaps who have the car now. They’re good guys and have been and are being very helpful. They have mentioned an independent engine specialist a couple of times now however so it’s clear that they are reaching the edge of their comfort zone, and to be honest, with this type of car, I’d much rather we find that out now, when it’s in the service position, as opposed to when we’ve started stripping engine components. I’ve a natural level of respect for anyone who holds their hands up and says that we are getting to the limit.
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Re: Seized Crankshaft

Post by ahoooga » Wed Sep 19, 2018 5:42 pm

IF you end up moving the car again, You have Unit 20 in Cheshire, and MRC at Banbury, North and south of the Midlands belt if you like.
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Re: Seized Crankshaft

Post by Eddie555 » Wed Sep 19, 2018 6:02 pm

I have a feeling it is a combination of a failing battery and a dodgy starter motor. It’s strange to not at least hear the solenoid on the starter engaging. My suspicion is the starter went to click in to start and because of dodgy battery the starter has jam on the flywheel causing it to jam the engine up. A quick solution is to literally hit the starter with a hammer while holding the ignition key on crank. I have had this happen in the past albeit on a old Ford Capri.
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Re: Seized Crankshaft

Post by R56WUF » Wed Sep 19, 2018 6:17 pm

Eddie555 wrote:
Wed Sep 19, 2018 6:02 pm
I have a feeling it is a combination of a failing battery and a dodgy starter motor. It’s strange to not at least hear the solenoid on the starter engaging. My suspicion is the starter went to click in to start and because of dodgy battery the starter has jam on the flywheel causing it to jam the engine up. A quick solution is to literally hit the starter with a hammer while holding the ignition key on crank. I have had this happen in the past albeit on a old Ford Capri.
My only thought on this Eddie is that it is a brand new OEM TPS supplied starter motor and an OEM Audi supplied battery.
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Re: Seized Crankshaft

Post by Eddie555 » Wed Sep 19, 2018 6:20 pm

R56WUF wrote:
Wed Sep 19, 2018 6:17 pm
Eddie555 wrote:
Wed Sep 19, 2018 6:02 pm
I have a feeling it is a combination of a failing battery and a dodgy starter motor. It’s strange to not at least hear the solenoid on the starter engaging. My suspicion is the starter went to click in to start and because of dodgy battery the starter has jam on the flywheel causing it to jam the engine up. A quick solution is to literally hit the starter with a hammer while holding the ignition key on crank. I have had this happen in the past albeit on a old Ford Capri.
My only thought on this Eddie is that it is a brand new OEM TPS supplied starter motor and an OEM Audi supplied battery.
But can’t discount that even new parts can fail. I’ve know new parts sometimes fail quicker than parts that have been fitted for donkeys years. They don’t make things how they used to.
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Re: Seized Crankshaft

Post by Bladerider » Wed Sep 19, 2018 7:32 pm

Ill guess that the starter engaged while you were driving due to coroded/damaged wiring where its had the work done.

Then the bendix has jammed in the flexplate
That is currently stopping the engine from turning over

The garage are morons if they cant figure this sort of thing out, unless you have managed to seize a crank solid with no warning or swarf.
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Re: Seized Crankshaft

Post by chunky79 » Wed Sep 19, 2018 8:06 pm

All the lights won't go out on the dash like that if just the starter has failed. The battery cables would get nice and warm, lights may go dim.
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Re: Seized Crankshaft

Post by Ian_C » Wed Sep 19, 2018 8:25 pm

R56WUF wrote:
Wed Sep 19, 2018 12:06 pm
The focus so far has been mechanically on the engine, however I’ve spoken with Grizz this morning at Unit 20 and I think I’ve made my mind to have it taken there. I’m still not convinced that there is anything majorly wrong with the car and I’m keen to get some form of accurate diagnosis made. Grizz hasn’t seen any C5s with a seized crankshaft so, while it is of course possible, I don’t really want to start chasing symptoms in the engine if the fault lies elsewhere.
Your C5 will be in good hands with Grizz. :thumbs:

And I agree on not diving in and prematurely replacing bits in the hope of fixing the issue - but on the other hand I also do agree with some of the above comments about recently fitted replacement parts being faulty.

I feel your pain, I've been through similar this year with my 205 GTi chasing a non starting issue. Ended up replacing starter motor, car still wouldn't start, original issue still present. When we eventually found the cause of the issue, the new starter motor turned out to be faulty and was hanging on horrifically when you started the engine, after a month it had pretty much burnt itself out! So it then wouldn't start for a second reason having fixed the first reason!
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Re: Seized Crankshaft

Post by Mɐʇʇ » Wed Sep 19, 2018 9:39 pm

It's unusual for an engine to seize in this manner - usually if a big end or main lets go you "spin" the bearing, but the motor will still turn over - and run to the point of ejecting bits out the side of the block. So it might be jammed, but it could well be something else causing it, not the crank itself - which'd be good for you! Interested to find out what the answer is.
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