Rpm Question

D

Dane Smith

New Member

Nov 11, 2015

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Nov 11, 2015

#1

• Nov 11, 2015

• #1

Hey everyone,

An all around new (Mustang) Owner. One owner 2015 Mustang GT. Bought it with 16,000 Miles.

I've noticed (only) on cold starts, until it warms up, that the RPM gauge will stick at 2k or 3k, etc, basically whenever I let off the gas. It will then eventually normal out after roughly two seconds.

Is this just a 2015 Mustang GT issue? Or a (normal) thing? I used to be a turbo owner, and this used to happen with boost misfiring. Obviously not the same.

Any answers would be appreciated. Still a (noob)

 

D

Dane Smith

New Member

Nov 11, 2015

5

0

1

Nov 12, 2015

#2

• Nov 12, 2015

• #2

Bump* Nothing?

 

justinakajuice

Active Member

Jan 20, 2015

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Nov 12, 2015

#3

• Nov 12, 2015

• #3

Well, cold starts are higher in the rpm range. After the car warms up for a while, it drops. 3k sounds a little high.

 

D

Dane Smith

New Member

Nov 11, 2015

5

0

1

Nov 12, 2015

#4

• Nov 12, 2015

• #4

justinakajuice said:

Well, cold starts are higher in the rpm range. After the car warms up for a while, it drops. 3k sounds a little high.

Click to expand...

I might've explained this wrong. The car is idling fine when cold. It's when I'm driving and let off the gas the RPM gauge will stick at whatever RPM I'm at and take 2-3 seconds to drop back down. Is this normal when motor is cold for these cars?

 

justinakajuice

Active Member

Jan 20, 2015

138

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Nov 12, 2015

#5

• Nov 12, 2015

• #5

I don't think so. It does that if it is in race mode. It holds the rpm, kind of like pausing it for a bit. It shouldn't be doing that in Normal driving mode though.

 

D

Dane Smith

New Member

Nov 11, 2015

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1

Nov 12, 2015

#6

• Nov 12, 2015

• #6

justinakajuice said:

I don't think so. It does that if it is in race mode. It holds the rpm, kind of like pausing it for a bit. It shouldn't be doing that in Normal driving mode though.

Click to expand...

Okay, I didn't think so... Thanks for the reply.

 

whatsup62

Member

Sep 20, 2015

6

1

13

Nov 13, 2015

#7

• Nov 13, 2015

• #7

Buy it from dealer or PP? I have experimented with different performance tunes. One I had in it caused it to "hang" just as you described. Got rid of that one quickly.

 

D

Dane Smith

New Member

Nov 11, 2015

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1

Nov 16, 2015

#8

• Nov 16, 2015

• #8

whatsup62 said:

Buy it from dealer or PP? I have experimented with different performance tunes. One I had in it caused it to "hang" just as you described. Got rid of that one quickly.

Click to expand...

I bought it from the Dealer with 15,000 Miles, car literally had no mods. Taking it in under warranty on the 23rd to get checked out.

 

84Ttop

They make new pistons every day, so why worry?

5 Year Member

Jul 2, 2009

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South Jersey

Nov 19, 2015

#9

• Nov 19, 2015

• #9

Let us know what they find, best of luck

 

BullittprfVest

Member

Aug 16, 2011

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Vegas

Dec 11, 2015

#10

• Dec 11, 2015

• #10

I had an issue similar to this. Ended up taking it in to get checked, and they found 2 bad fuel injectors. Replaced them and have had no issues in 1000+ miles since.