Strange Idle during cold start

[Tungsten06GT]

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]

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]

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]

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

 

[xxrequiemxx]

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

 

[ptfoxbdy89]

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

 

[Steel]

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]

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]

And clean the MAF while you're at it.

 

[Steel]

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.

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]

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]

And clean the MAF while you're at it.

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