My car usually starts perfect in the cold weather, I would just like to know what all your cars "Rev" to in the morning. Please state what temperature outside it usually is and what it revs for.

About 15-20 degrees it will start up and be at 1700 and slowly rev to about 2100 and then settle after about 15 seconds of revving at 2100. The colder it is the weirder it starts.

370's
Lightweight flywheel
3.125 pulley
Full 3" exhaust

Let me here yours now COLD guys !!

-matt

 

When its 15-20 degrees outside my car start off at about 1300-1400 and drops down as it warms up to about 600-700.
nismo 555
walbro
t4 turbo
3" turbo back

 

I wonder why my car is reving so high when I first start it in the cold weather ?? Could something be faulty ?? Or is it becasue Im not "controlling" my injectors right now with anything ??

-matt

 

that is revving kinda high.....im not sure what the cause of that would be to be honest with you....

 

I've been wanting to ask the same question and let me tell you matty that my car starts the same way as yours. When the weather is cold like u said it revs to like 2100RPM and as it warms up the RPMs drop slowly to its normal rev. And i have the same set up as you do.....sooooo i dont know what the problem is, if there is one? Im thinking it could be the cold weather because when the day is nice and warm it doesnt rev that high.

 

Anyone have any ideas...lets discuss this

-matt

 

Fast idle Cam?

 

Any other ideas.....Ive never had this happen to me in my car....Its reving to about 2100-2200 RPMS in the morning. Definetly something wrong

If I jiggle the shifter back and forth the rpm's tend to drop to about 1500-1700...really weird

-matt

 

My car also hits 1400 then slowly settles to about 800RPM.

I do get slight hesitation when moving at about 2400-3000 RPM when cold. Once it warms up even a little - it's fine. The Z32 MAF is the culprit as you've seen me speak of before.

 

Well if I start it in gear, say 1st gear, in the cold morning, its completly stays right at 1500 then drops down while warming up. The next morning, same temp.< start it in 1st gear, then 5 seconds later pop it in neutral and it goes right up 2100-2200. Very weird. Could it be the part nuetral switch. What else could it be

-matt

 

I don't think that would be the P/N switch. If I push my clutch in, (P/N Switch On) the idle doesn't change until I give it gas or put it in gear and engage the clutch. Also, that switch doesn't really work mechanically. It's purely a safety device for starting the car - nothing to do with how the engine runs.

If you have the clutch pushed in and the stick in 1st gear - then you are still in Nuetral as well.

 

Thats the same thing I was thinking as well. Something in there is wrong, like a sensor. What else is there that would sense it. With the clutch down, and pop it in 1st, it dropps right down to where it should be (1500)...My mind is boggled.

-matt

 

Could the Coolant Temp Sensor be causing this ?? I am getting a weird starting issue when cold. a really slow crank then it slowly turns over and stumbles then revs really high.

-matt

 

I get odd things with my idle when the car is dead cold. I can't go over 20% throttle till the car warms up a bit, it will just bogg. I sometimes get a really high idle as well upon cold start up. But in 4-5 minutes everything is fine and the car runs like a champ

I guess I just look at it differently. I got so much crap done to my car that it doesn't bother me if it needs a few mintues in the morning to get going.