Raising rpm slightly

[Jimmy’s gen]

Has there been any updated to raise the the cars rpm slightly to correct the vibration at idle ??

 

[EdP]

Has there been any updated to raise the the cars rpm slightly to correct the vibration at idle ??

That does not seem to be the proper solution. What RPM do you see at idle? How many miles? What is the condition or spark plugs, wires, etc.

 

[Jimmy’s gen]

That does not seem to be the proper solution. What RPM do you see at idle? How many miles? What is the condition or spark plugs, wires, etc.

There’s 70k on the odometer but I’ve noticed it for a long time ago. Usually rpm sits around 550-600 at idle in drive,a touch higher in park

 

[skipgen]

There’s 70k on the odometer but I’ve noticed it for a long time ago. Usually rpm sits around 550-600 at idle in drive,a touch higher in park

That seems about right - my 5.0 idles near there.

 

[carguy75]

Has there been any updated to raise the the cars rpm slightly to correct the vibration at idle ??

My 2015 5.0 idles very smooth at about 500rpms to the point you cannot tell that the engine is running except for the fuel injector ticking. However, I use 93 octane gasoline.

My 5.0 idled like crap with 87 octane. Therefore, I would focus more on using higher octane gas than trying to raise the idle rpm speed to smooth out your idle.

 

[Jimmy’s gen]

I’ll try using a higher octane, thanks

 

[carguy75]

I’ll try using a higher octane, thanks

I hope that higher octane fuel help to smooth out your engine idle if you were using 87 octane. Every direct injected car I own(VW,GM,KIA,Hyundai) ran smoother with 93 octane even though they all could use 87 octane at the minimum per the owners manual.

Anything that is a minimum requirement is never best for engine performance or long-term durability.

 

[skipgen]

My 2015 5.0 idles very smooth at about 500rpms to the point you cannot tell that the engine is running except for the fuel injector ticking. However, I use 93 octane gasoline.

My 5.0 idled like crap with 87 octane. Therefore, I would focus more on using higher octane gas than trying to raise the idle rpm speed to smooth out your idle.

I've never used 87 since I've owned mine... Wish they didn't put so much ethanol in gas - I got a tank of non blended once on a road trip and I think that it was the best it ever ran. Might have been my imagination but I'm pretty observant about such things.

 

[carguy75]

I've never used 87 since I've owned mine... Wish they didn't put so much ethanol in gas - I got a tank of non blended once on a road trip and I think that it was the best it ever ran. Might have been my imagination but I'm pretty observant about such things.

I have a local BP that sells non-ethanol 89 which I use in my lawnmower engine. My mower engine seems to run very well with it and still works the next season without any issues if some of the fuel sat in the carburetor for a few months. The blended stuff would always require an new carburetor if the fuel was left in the mower for a season due to gumming it up.

I am sure that non-blended 91 or 93 octane would run better in my 5.0 V8 as well, but I do not want to use BP 89 octane in my ride to test it. However, I wish BP sold 93 octane without ethanol.

 

[skipgen]

I have a local BP that sells non-ethanol 89 which I use in my lawnmower engine. My mower engine seems to run very well with it and still works the next season without any issues if some of the fuel sat in the carburetor for a few months. The blended stuff would always require an new carburetor if the fuel was left in the mower for a season due to gumming it up.

I am sure that non-blended 91 or 93 octane would run better in my 5.0 V8 as well, but I do not want to use BP 89 octane in my ride to test it. However, I wish BP sold 93 octane without ethanol.

I got that tank in the middle of BFE Mississippi - I have yet to see any of it in Houston.

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[TinsleyC]

I got that tank in the middle of BFE Mississippi - I have yet to see any of it in Houston.

Not much in Houston... Or in the Dallas area where I am.

NE San Antonio looks rich!

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