Strange Idle during cold start

T

Tungsten06GT

New Member

Feb 18, 2008

16

0

0

Dec 18, 2008

#1

• Dec 18, 2008

• #1

Hey guys,

I've always sort of had this issue during the cold, but I do have a CAI and tune, and when I first start the car the rpm's will fluctuate slightly around 1k rpm for about 10 seconds, and then setting down to around 750. I know it takes a few seconds for the rpm's to settle, but the fact that they fluctuate around 1k worries me. Does this sound like the MAF just may need cleaned?

Thanks

 

ptfoxbdy89

New Member

Aug 4, 2007

137

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0

Memphis Tn.

Dec 18, 2008

#2

• Dec 18, 2008

• #2

nope its normal on cold starts less then 40 degrees mine has gone up to 2k for a few seconds before just start it let it warm up for about a min and go just don't gas it or anything till the rpms settle normal stuff though

 

xxrequiemxx

Member

Aug 23, 2001

239

0

16

Long Island, NY

Dec 18, 2008

#3

• Dec 18, 2008

• #3

Same thing happens to me... though, i also hear a clicking sound coming from my engine bay during the warm up... it goes away after a little while though... any ideas?

 

ptfoxbdy89

New Member

Aug 4, 2007

137

0

0

Memphis Tn.

Dec 18, 2008

#4

• Dec 18, 2008

• #4

the 3v valve train just clicks all is normal... don't know why it would be just at start up?

 

xxrequiemxx

Member

Aug 23, 2001

239

0

16

Long Island, NY

Dec 18, 2008

#5

• Dec 18, 2008

• #5

well, i hear it click after the startup... but it sounds more defined when the cars cold

 

ptfoxbdy89

New Member

Aug 4, 2007

137

0

0

Memphis Tn.

Dec 18, 2008

#6

• Dec 18, 2008

• #6

got ya.. all is fine lol put a big cam in it with high lift see if you can hear it click then!!

 

Steel

New Member

Apr 13, 2006

0

0

0

Modena , Italy

Dec 23, 2008

#7

• Dec 23, 2008

• #7

I had the same fluctuation problem 2 times , and 2 times I solved it by cleaning the intake : just remove the four bolts ant the wires , use some motor oil and be gentle with the moving parts .
Be sure to remove all the black stains and to clean away the oil you used .

My car runs very good : with S/C and ram air filter cleaning the intake is mandatory , especially in dusty hot climate

Have fun

Steel

 

DukeOfValencia

Member

Apr 18, 2005

86

3

9

Valencia, CA

Dec 23, 2008

#8

• Dec 23, 2008

• #8

I had the same problem. Pull off your CAI at the throttle body, then give the throttle body a good cleaning. I had a little build up of air cleaner oil on and around the butterflies of the throttle body. that worked for me.

 

anthony05gt

Active Member

Mar 18, 2006

1,262

1

37

Maryland

Dec 23, 2008

#9

• Dec 23, 2008

• #9

And clean the MAF while you're at it.

 

Steel

New Member

Apr 13, 2006

0

0

0

Modena , Italy

Dec 24, 2008

#10

• Dec 24, 2008

• #10

RetiredGeneral said:

I had the same problem. Pull off your CAI at the throttle body, then give the throttle body a good cleaning. I had a little build up of air cleaner oil on and around the butterflies of the throttle body. that worked for me.

Click to expand...

In fact I meant the same : clean with oil the throttle body and the butterflies - my problem is that I don't know technical english enough .

Merry Xmas from Italy to everybody

Steel

 

anthony05gt

Active Member

Mar 18, 2006

1,262

1

37

Maryland

Dec 24, 2008

#11

• Dec 24, 2008

• #11

Hello there in Italy. My grandparents were born in Italy. I like the way brakleen works on cleaning the TB. I would use maf cleaner on the maf though because you never know what components on the maf could be damaged by brakleen.

 

Steel

New Member

Apr 13, 2006

0

0

0

Modena , Italy

Dec 29, 2008

#12

• Dec 29, 2008

• #12

anthony05gt said:

And clean the MAF while you're at it.

Click to expand...

any suggestion on how to clean , or which products tu use ? In fact recently I have a small issue that could be related to a dirty maf , and i want to check it next sathurday ... always fun to work on the stang in a warm garage with a beer while outside you see the snow ...
Thanks

Gianluca