Idle Speed

[gadesso]

Anyone else having issues with idle speed when you first start the car, mine revs @ 2300 RPM, I plan on having it looked @ when I bring it in for the my first service. I'll keep you posted.

[slideit]

When I first start mine it idles at around 2000 RPM for some seconds before settling down. Can't remember what it goes down to though.

[JimmyT]

Same thing with my 12 days old CX-7. At engine start-up , the engine rpm hits around 2000 and if you are patient, you should see it come down to normal idling speed after about 30 secs. Most of the time, I just shift my gear right after engine start to D and right before moving off, the rpm drops affirmatively to normal idling speed almost immediately.

There must be an explaination for the 2000 plus rpm right at each cold start up. Suspect its a way to quickly warm up a turbo engine ?????

[vbbuilt]

Anyone else having issues with idle speed when you first start the car, mine revs @ 2300 RPM, I plan on having it looked @ when I bring it in for the my first service. I'll keep you posted.

That's normal...don't sweat it. Virtually all modern engines do that when first started, particularly on a cold morning. Most of the time, you can throttle back by lightly tapping the accelerator pedal.

Vince.

[CX-7SOW]

Got my CX-7 on 2/16/07, I LOVE IT!!!!! Mine also revs @2000 RPM on the very 1st start in the morning. It also makes a click/clunk noise first start out of the gate in the morning after about 25 ft. It does it like clock-work same spot out of the drive each time. Hubbie tells me not to worry. Does anyone else experience this? Thanks.

Galaxy Gray
Touring/Black Leather
Bose/Moonroof

[Dingusboy]

I have a copy of a service bulletin titled "Clunking Noise When Shifting From P to R". The Bulletin Number is 03-004/06. I don't recall where I downloaded it from. Maybe someone can direct you. Otherwise keep checking the threads. It's here somewhere.:confused:

OOPS!!! Seek and Ye shall find.

http://www.finishlineperformance.com/cx7/bulletins_index.html

[das]

When I first start mine it idles at around 2000 RPM for some seconds before settling down. Can't remember what it goes down to though.

only reason it revs @2000rpm when u start it is cause ur engine is cold it need to warm up like any other car that around even in the summer if ur car has been off for like 8 hours your engine block gets cold so it needs to warm up alright

[pgeller]

Sorry, I don't agree. My Audi A4 1.8T immediately settles to 1000 rpm idle hot or cold. A modern car with closed loop EFI can start and run just fine at cold temps. Its a programming choice they made, not an intrinsic behavior.

pg

only reason it revs @2000rpm when u start it is cause ur engine is cold it need to warm up like any other car that around even in the summer if ur car has been off for like 8 hours your engine block gets cold so it needs to warm up alright

[rmvazquez]

The clunk you hear at about 25 feet from your house is the ABS check or so I am told. It does it when you car reaches 10mph the first time.

[Superstretch18]

Sorry, I don't agree. My Audi A4 1.8T immediately settles to 1000 rpm idle hot or cold. A modern car with closed loop EFI can start and run just fine at cold temps. Its a programming choice they made, not an intrinsic behavior.

pg

You are correct, it is part of the ecu programming, not natural engine operation. It is done on purpose to help heat the cats more quickly, which gets them operating faster...

[Superstretch18]

By the way, you might get a clunk if you shift into drive when the engine is reving to 2000 rpms too...

[STN1]

Also noticed that engine revs to about 2K at first start in the morning when you start the engine with your foot off the gas pedal. Discovered that if you press the gas pedal a half inch before cranking, and release when she fires, the engine idles at 1K.

[Rick's CX-7]

Discovered that if you press the gas pedal a half inch before cranking, and release when she fires, the engine idles at 1K.

I tried this and it works. The idle will settle at just over 1k RPMs.

[adscft]

Will definitely try this. So does this harm the engine other than taking it longer to warm up?

My 7's issue with the high RPM at cold start is that, if I shift from P to R at above 1k, there is a clunk and a jerk of the whole vehicle. If I shift from P to D instead, almost no clunk or jerk. And if from a warm start, it is very smooth. Anyone had this before?

I tried this and it works. The idle will settle at just over 1k RPMs.

[MAZOOM]

Yes, there is a TSB for it, check that part of the forum for it, print it out and take it to your dealer.

[adscft]

Yes, there is a TSB for it, check that part of the forum for it, print it out and take it to your dealer.

Are you talking about this one?
http://www.mstore2000.com/PDF_Files/03-004-06-1643.pdf
Seems this is only AWD, and mine is a FWD.
Anyway, thanks for your input.

[Rick's CX-7]

Are you talking about this one?
http://www.mstore2000.com/PDF_Files/03-004-06-1643.pdf
Seems this is only AWD, and mine is a FWD.
Anyway, thanks for your input.

I took my FWD to the dealer for that problem. They kept it for a while and God knows what sort of diagnostics they ran:rolleyes:; but their verdict was to "just let it warm up....it's ok." I've been doing the gas thing right before starting the car and it's working out good.

[adscft]

I also did the gas-before-start trick. The engine revs up to over 4k rpm, and rests at right above 1k rpm in seconds. So the 4k rpm on a cold engine won't hurt it, am I right?

What I am doing right now is parking the vehicle rear-in, so that I can shift into D (instead of R) at below 1.5k rpm (10 seconds wait without the gas-before-start thing) and go. Almost no jerk. :o

However, i think an ultimate solution would be a TSB that reprogram the computer and give a lower idle at cold start. I am just wondering that, does a turbo engine need a higher idle to warm up? :confused: Even a Kia Rio I got when the 7 is in for service idles at well below 1.5k rpm at cold start. :eek:

I took my FWD to the dealer for that problem. They kept it for a while and God knows what sort of diagnostics they ran:rolleyes:; but their verdict was to "just let it warm up....it's ok." I've been doing the gas thing right before starting the car and it's working out good.

[MAZOOM]

Yes it will

[Rick's CX-7]

I also did the gas-before-start trick. The engine revs up to over 4k rpm, and rests at right above 1k rpm in seconds. So the 4k rpm on a cold engine won't hurt it, am I right?

What I am doing right now is parking the vehicle rear-in, so that I can shift into D (instead of R) at below 1.5k rpm (10 seconds wait without the gas-before-start thing) and go. Almost no jerk. :o

However, i think an ultimate solution would be a TSB that reprogram the computer and give a lower idle at cold start. I am just wondering that, does a turbo engine need a higher idle to warm up? :confused: Even a Kia Rio I got when the 7 is in for service idles at well below 1.5k rpm at cold start. :eek:


You are supposed to let go of the gas just as the car begins to start. Do not hold the gas down and let the engine rev to 4k RPMs on a cold engine. You could be doing damage by doing that.

Rick

[sh3p]

I might be missing something, but 2k idle at start up cause it is cold...is it a big thing?

I dont think it is.... why is it so bad? Its winter in my neck of the woods currnetly down to about 5 degrees celisus at night... soon to get down to -2 in the comming months... why is every one so worried?

[MAZOOM]

No, it isn't. The car was programmed to do that until a certain point or time.. if I try to make it stop and put it back into park, it revs back up to 1.5k. Revving it to 4K however isn't a good thing.

[adscft]

Tried to hold the gas for a shorter time, and no 4k RPMs anymore. It went to just above 2k and then rested at above 1k. Thanks! :D

You are supposed to let go of the gas just as the car begins to start. Do not hold the gas down and let the engine rev to 4k RPMs on a cold engine. You could be doing damage by doing that.

Rick

[Rick's CX-7]

There you go! It's all about the timing....letting go as soon as it fires.