A4 2.0 TDI B8 - wont start when hot (??!) - please help!
Discussion
Hi! Apologies if this is the wrong section to post this in - seemed the most relevant.
I've managed to acquire a really awkward problem with my A4 (2.0 TDI 143bhp, 2008 B8)
Basically the car wont start when hot. If i drive it to full engine temp, then once switched off it will fail to start until around 2 hours after (presumably when the engine is back down to min temp?), after which it will start again quite happily.
The engine sounds *slightly* reluctant on a cold start, but does start every time without fail.
When hot, it manages an awful metallic shaking effort with a lot of judder and vibration, then just dies again. The revs make it up to around 600rpm, so not quite enough to sustain the start. If i give it some accelerator, i can prolong the effort, but with the same metallic grinding sound, for about 2 seconds until it dies.
I can produce this error reliably, and have had 2 garages and a main dealer take a look at it.
The problem seems to have started after having a clutch and master flywheel (dual mass) replaced. I'm sending it back to those guys at the end of the week to have a third look at it, but i don't have much hope as i'm realizing the garage is pretty useless.
The technician at the Audi main dealership said he thought it was a 'collapsed master flywheel', but i'm struggling to see how this could only cause an issue when the engine has been running for a while - surely it would be a problem every time?? Also, with their prices, and if it is this, i need the original culprits that fitted the flywheel to sort it out rather than paying out another £1k+ to get it fixed again.
I've already had the engine temperature sensor replaced on recommendation, and that has made no difference.
Anyone come across this issue before, had it fixed, or have fixed it themselves?
I'm running out of time and money on this
Many thanks!
DC
I've managed to acquire a really awkward problem with my A4 (2.0 TDI 143bhp, 2008 B8)
Basically the car wont start when hot. If i drive it to full engine temp, then once switched off it will fail to start until around 2 hours after (presumably when the engine is back down to min temp?), after which it will start again quite happily.
The engine sounds *slightly* reluctant on a cold start, but does start every time without fail.
When hot, it manages an awful metallic shaking effort with a lot of judder and vibration, then just dies again. The revs make it up to around 600rpm, so not quite enough to sustain the start. If i give it some accelerator, i can prolong the effort, but with the same metallic grinding sound, for about 2 seconds until it dies.
I can produce this error reliably, and have had 2 garages and a main dealer take a look at it.
The problem seems to have started after having a clutch and master flywheel (dual mass) replaced. I'm sending it back to those guys at the end of the week to have a third look at it, but i don't have much hope as i'm realizing the garage is pretty useless.
The technician at the Audi main dealership said he thought it was a 'collapsed master flywheel', but i'm struggling to see how this could only cause an issue when the engine has been running for a while - surely it would be a problem every time?? Also, with their prices, and if it is this, i need the original culprits that fitted the flywheel to sort it out rather than paying out another £1k+ to get it fixed again.
I've already had the engine temperature sensor replaced on recommendation, and that has made no difference.
Anyone come across this issue before, had it fixed, or have fixed it themselves?
I'm running out of time and money on this
Many thanks!
DC
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