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Engine wont Rev past 2000 RPM
Posted: Thu Dec 21, 2023 11:41 am
by racingredchief
Hi All , Newbie here
I have a VW Polo 1.2 2009 .
When I start up the engine it will rev as normal past 2000 RPM no problem so long as I keep the revs High
If I drop the revs to tick over or at least lower than 2000 the car seems to go into some sort of Limp Mode and wont go past 2000RPM
Just changed the Crank Position Sensor as that was easiest and no change.
Only other thing I can think of is the Engine Mounts are shot and engine does wobble lots.
Thanks in Advance
Adrian
Re: Engine wont Rev past 2000 RPM
Posted: Thu Dec 21, 2023 12:16 pm
by racingredchief
here is what happens in a 2 minute brief YT video
https://youtu.be/9YFB9FIK6GI
Re: Engine wont Rev past 2000 RPM
Posted: Thu Dec 21, 2023 4:35 pm
by Maarten
Engine shakes a lot.
Did you do a scan?
Sounds like 1 cilinder is not performing well
Re: Engine wont Rev past 2000 RPM
Posted: Thu Dec 21, 2023 5:12 pm
by racingredchief
Thanks Maarten ,
It does seem like the revs are a bit uneven and possible misfiring, could be as simple as a spark plug , what do you think ?
didn't do a scan
Re: Engine wont Rev past 2000 RPM
Posted: Thu Dec 21, 2023 5:58 pm
by Maarten
Did you check the plugs?
When were they changed last time?
Re: Engine wont Rev past 2000 RPM
Posted: Sun Dec 24, 2023 8:25 pm
by racingredchief
just changed the plugs today , they certainly needed changing but the problem is still there
Re: Engine wont Rev past 2000 RPM
Posted: Sun Dec 24, 2023 8:30 pm
by Maarten
Those have a lot of oil on them.
That's not normal
Re: Engine wont Rev past 2000 RPM
Posted: Tue Jan 09, 2024 8:59 pm
by racingredchief
Car had a compression problem, possible cracked head etc .
We have scrapped in the end
Thanks for all your help and input
Video of the compression test attached
https://youtu.be/GxjEwB59oDA
Re: Engine wont Rev past 2000 RPM
Posted: Tue Jan 09, 2024 8:59 pm
by racingredchief
Car had a compression problem, possible cracked head etc .
We have scrapped in the end
Thanks for all your help and input
Video of the compression test attached
https://youtu.be/GxjEwB59oDA
Re: Engine wont Rev past 2000 RPM
Posted: Wed Jan 10, 2024 7:40 am
by Maarten
racingredchief wrote: ↑Tue Jan 09, 2024 8:59 pm
Car had a compression problem, possible cracked head etc .
We have scrapped in the end
Thanks for all your help and input
Video of the compression test attached
https://youtu.be/GxjEwB59oDA
Thanks for the update.
Too bad you couldn't save the engine.
Better luck with your next car
