RPM flucturating
#1
01-24-2019, 07:40 AM
Join Date: Feb 2004
Location: Denmark
Age: 49
Posts: 97
Rep Power: 24 
RPM flucturating
Hi Guys.
Need a little help here.
On my 970GTS the RPM needle or engine seems to flucturate 100-200 rpm all the time. It is most significant when for example driving with 2000 RPM on straigt road or slightly uphill. Then the needle will jump to 2150 RPM every 2 second.
I am not sure if it is the instrument cluster or actually the engine RPM that jumps up and down - but it is for sure annoying to look at.
Take a quick look at the short video attached :-/
Anyone seen this before or have any good suggestions?
Thanks in advance.
Need a little help here.
On my 970GTS the RPM needle or engine seems to flucturate 100-200 rpm all the time. It is most significant when for example driving with 2000 RPM on straigt road or slightly uphill. Then the needle will jump to 2150 RPM every 2 second.
I am not sure if it is the instrument cluster or actually the engine RPM that jumps up and down - but it is for sure annoying to look at.
Take a quick look at the short video attached :-/
Anyone seen this before or have any good suggestions?
Thanks in advance.
#2
01-24-2019, 07:53 AM
Not sure if it’s because I’m on my phone but can’t seem to view the vid.
I don’t see my tach needle jump but one of the first things I noticed (esp after coming from a few BMW’s) was that the Panamera idles rough. I even asked the dealer about it but they said it was normal.
I don’t see my tach needle jump but one of the first things I noticed (esp after coming from a few BMW’s) was that the Panamera idles rough. I even asked the dealer about it but they said it was normal.
#3
01-24-2019, 08:10 AM
Join Date: Feb 2004
Location: Denmark
Age: 49
Posts: 97
Rep Power: 24
I know the Porsche cars can run a little bit rough in idle. But this is most significant when actually driving the car.
The attachment is in .avi format. For some reason the bulletin board does not accept .MP4.
#4
01-24-2019, 09:59 AM
I think I recall the same on my 970. Never turned out to be an issue. I would assume if it was a real time fluctuation that mattered you would get a code or check engine light.
#5
01-24-2019, 11:04 AM
Join Date: Feb 2004
Location: Denmark
Age: 49
Posts: 97
Rep Power: 24 You might be right - but it has not been there all the time. It can't be right that you have to look at this needle jumping up and down all the time.
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#9
01-25-2019, 09:18 AM
my '11 970 v6 does the same thing. It very rarely does it when its cold outside. It is most noticeable during the summer months.
#10
01-25-2019, 09:29 AM
Join Date: Feb 2004
Location: Denmark
Age: 49
Posts: 97
Rep Power: 24 If it come and goes with the outside temperature - it is most likely not the instrument cluster that is faulty. but I haven't been able to relate it to anything yet. Only it is not there at idle RPM, and most significant around 1800+ RPM driving slightly uphill.
#11
01-27-2019, 12:26 AM
Registered User
Join Date: Aug 2018
Location: Anaheim, CA
Age: 43
Posts: 209
Rep Power: 14
So I had something very similar to you and it bugged the hell out of me! You gotta try this out and i know it seems crazy at first but it really works and I think It might actually work for you too... Liquimoly MOS2 Oil Addiditive... For the panamera v8's, you'll need 1.5 bottles and you simply add it into your existing engine oil... It just smoothens out the entire engine, compketely taking away that rpm jumping. Look up the reviews on it and you'll be oretty amazed... let me know if you try it out.
#12
01-27-2019, 07:55 AM
Join Date: Feb 2004
Location: Denmark
Age: 49
Posts: 97
Rep Power: 24 So I had something very similar to you and it bugged the hell out of me! You gotta try this out and i know it seems crazy at first but it really works and I think It might actually work for you too... Liquimoly MOS2 Oil Addiditive... For the panamera v8's, you'll need 1.5 bottles and you simply add it into your existing engine oil... It just smoothens out the entire engine, compketely taking away that rpm jumping. Look up the reviews on it and you'll be oretty amazed... let me know if you try it out.
I will need to check with Porsche what they say about it. Adding this additive has to be approved by them as long as I still have Porsche insurence on the car.
Would be great to hear from other people who experienced the same and might have a fix for it.
