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Low Idle RPM

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Hi All,

 

Hi all,

Quick question. 

Went to see 2005 MK2 Octavia 1.6fsi with the BLF engine. The cars got 98k miles on it. The seller sent over a few videos of the car running. The rev gauge is only showing about 500 to 600 rpm after start up. On the video it seems to be running nice but Im concerned about the low revs. in person I saw that the car is running smoothly even on about 400rpm on idle. Engine is not rocking which suggests that all cylinders running perfectly. When I set off it pulls nicely too. No misfires. My dad's 1.4 octy has an idle of around 800 which I think is normal but 500 or 600 is a tad bit too low? Should I avoid this or could it be normal?
 

Thanks

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It could simply be that someone has dismantled the instrument cluster for genuine reasons (to repair a fault), and put back that gauge needle in a wrong position. It can be hard to get them back perfectly right on clusters I've worked on.

Worth checking that all the warning lights that you should see briefly at ignition on are present though. One reason for getting into clusters is to mask stubborn warning lights...

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Thank you I'll have a look tonight. Also do you think these engines are good? I've read mixed reviews of this and just want to make sure that I don't buy a car that will blow up with 2k miles. It has yearly services the only one that was missed out was 2021. If I do buy the car no matter what I'll take it to get a service done on it. The seller spent a few hundred pounds on brand new pads and discs about 5 months ago.

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I have no knowledge or experience of that engine, sorry.

1 hour ago, DomsSkoda2006 said:

The rev gauge is only showing about 500 to 600 rpm after start up.

That does seem low; with a petrol I'd expect more like 1_000 dropping to 800 on a cold start. And as @Pete_Ex-Wino says, check all the warning lights first appear on switch on, and then extinguish within about 5s of the engine firing.

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Okay thank you I will check it. I have also download vagcom to see if it brings up anything.

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On 02/06/2022 at 07:48, Pete_Ex-Wino said:

It could simply be that someone has dismantled the instrument cluster for genuine reasons (to repair a fault), and put back that gauge needle in a wrong position. It can be hard to get them back perfectly right on clusters I've worked on.

Worth checking that all the warning lights that you should see briefly at ignition on are present though. One reason for getting into clusters is to mask stubborn warning lights...

Hi again,

 

So I have bought the car and checked it out with Vagcom and a universal OBD2 reader thing. The engine is turning over at a healthy 750 800 or idle. The clock is reading wrong. When the car is only on ignition the clock is below the 0 reading. Do I need to worry about this or not? Also, when looking up fault codes on vagcom I got the following codes:

17439 and 16825. I'm not too sure whether the version of vagcom i have has got something to do with this. I'll get a garage to check it out fully next week.

If it bothers you then realign the needle.

 

I was going to post that it was highly unlikely that a modern engine could idle at 400 rpm like a stationary engine.

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