No Power On Start Up When Its Cold?

[R32FOURDOOR]

Ok

The car is a nissan skyline R32 GTS-T (no modifications)

When its cold it cant be driven untill the temperature needle starts to go up.

What it does is this:

If you slowly push the gas pedal and the revs will hold on 1100RPM and it wil struggle to go any higher

Its like is got a flat spot. If you give it abit more it will get over that flat spot and will go higher in RPM.

As you can imagin it would make it a pain to drive.

Once its warm its fine and this "flat spot" magically dissapears!

My friends R32 doesnt do this (although its bad to not warm up ur car, he can gun it from the word go, no flat spot) Where as i have to sit there and warm it up so it dont drive like sh#t.

Any help would be great

Cheers Matt

[R32FOURDOOR]

honestly somebody?

[Pablo]

I believe this is common (and normal) in R32's.

[Fugi]

Man u shouldnt be driving ur car when its cold. the oil pressure and temp have to be right.

i sometimes have to warm my car up for 7 min. just set turbo timer and go do somethin else till its warm.

cauz driving well its cold can cauz u problems.

[dezz]

Man u shouldnt be driving ur car when its cold. the oil pressure and temp have to be right.

i sometimes have to warm my car up for 7 min. just set turbo timer and go do somethin else till its warm.

cauz driving well its cold can cauz u problems.

and then after 7 minutes of sitting at idle, you drive off with a freezing cold gearbox, diff etc....

start the car, run it for 30sec-1min to let the oil coat parts, then drive it nice and easy and at low revs until EVERYTHING is up to temp and ready to go.

[GTAHH]

Try cleaning all the basic sensor's. AFM, AAC, throttle body etc

[Trex101]

Ok

The car is a nissan skyline R32 GTS-T (no modifications)

When its cold it cant be driven untill the temperature needle starts to go up.

What it does is this:

If you slowly push the gas pedal and the revs will hold on 1100RPM and it wil struggle to go any higher

Its like is got a flat spot. If you give it abit more it will get over that flat spot and will go higher in RPM.

As you can imagin it would make it a pain to drive.

Once its warm its fine and this "flat spot" magically dissapears!

My friends R32 doesnt do this (although its bad to not warm up ur car, he can gun it from the word go, no flat spot) Where as i have to sit there and warm it up so it dont drive like sh#t.

Any help would be great

Cheers Matt

What viscosity of engine oil did you used? What's the temp now at your location? Your oil could be too thick.

Edited April 1, 2006 by Trex101

[SLIPPERY]

just feels like the r32 cold fuel map is a little too rich and it coughs and splutters everywhere. soon as water temp reaches 80 degrees (approx) then you obviously change to the warm map where fuel and ignition suit the car better.

perhaps the cold start of the Power FC is better suited than the factory ecu? im changing over soon so should be able to let you know

im sure others have already changed to the FC and would be able to share experiences

[R32FOURDOOR]

dude i never drive my car cold thats not what i said

I said thats its still wierd reving after like ten mins of warm up time

Also im just saying that any body could drive their car at like 20kph when cold yea? Mine doesnt even do that. u know what i mean

[cowie165]

My car does the same thing, intermittently.

Cleaning the AFMs helps - usually prevents it occurring for a few weeks.

And thumbsup to Dezz - agree 100% dude, having your car idle to 'warm up' is not required and you're worse off for doing so.

[R32FOURDOOR]

ive cleaned afm so i couldnt be that.

do u think that it could just be a normal thing then?

[JC_R32]

Does it idle funny on start up? Mine does on a cold start, last time i started it cold the revs went from 0 - 900 to 100- 900 and repeated until i gave it some throttle, which then did nothing... eventually the reves went up to 1200 sat there for a few secs then came down to 900 and sat there fine..

Usually when that happens, when i drive off and then disengage the clutch at my first stop, it almost stalls, but doesn't... even sometimes does that when it's completely warm...

I have cleaned my spark plugs and it is smoother on idle...but still does the whole spluttering thing occasionally...

Interested to know if they are similar problems.... mine might be fuel line, coz i can smell fuel sometimes whilst driving... which would explain the dodgy start up... im gonna try injector cleaner, but i reckon there must be a slightly cracked hose somewhere....

GODDAMM CARS GODDAMMITTT!!

[JiN_MaN]

Have you checked your cold start, (automative choke)

Ive got the same problem at start up, idle goes up and down as it wants, give it a couple of revs, up to about 3000, do that twice and it just idles by its self after that.

[Johnny Cash]

Yeah, I've got the same problem. When it's cold, the revs barely run, around 100-200rpm. Sometimes it stalls out, and you hear this squealling-whining noise under the bonnet. Then you try kicking it again and it purrs.

I think maybe the fuel pump running at 6 volts doesnt supply enough fuel when its cold for the extra revs the engine wants or something like that. All I know is if you press the accelerator pedal, the revs run like normal. So I'm guessing it's a cold engine problem, probably involving the fuel system and cold-start electronics...

Damn these cars!

[JC_R32]

Sometimes mine happens when its warm too... like when i pull up at traffic lights the engine idles up and down...goes down to 100 then goes up and down a bit before it settles....

[Fugi]

i had the same problem with bad idle'in, but thats cauz i had the waste gate blocked off or whatever u call it so it made the diff sound that everybody likes.

like sometimes i would start and then the car would come close to stalling and rumble a bit. then i took the corke out and then it worked fine. never putting that thing in again.

[cowie165]

Johnny Cash I'm with you.

For the newer members that may not have read the thread, check out:

http://www.skylinesaustralia.com/forums/in...owtopic=408&hl=

Interesting reading. I had the same problem in my 180SX.

[sky20det]

ok my car does the same..

its an r32 gts-t manual.

on first startup of the day, i have to play with the gas a bit to get it to turn on. then about 2 mins later it drops idle from 1200rpm to about 800rpm and sounds like its really struggling. like R32FOURDOOR said, i also have this "flat spot" where even though im stepping on the gas pedal, the car doesnt want to rev past the 1500rpm mark. it even starts to make boost while staying at this flat sopt.

when my car warms up, it is almost gone. just occasionally comes back when i slow down to stop at the lights. it almost stalls and probably will if i dont put a bit of gas on.

ive tried everything.. clean AAC, AFM, new timing belt, idle adjustments etc but no good.

the other thing i want to mention is that when i try to adjust my idle, i can get it to about 850rpm WITHOUT the AAC valve connector plug in (idle not controlled by ECU), but as soon as it is plugged back in the ECU sends the idle up to around 1300rpm. the manual says the adjustable screw on the ECU should be turned fully ANTI-CLOCKWISE, but it also states that the idle can be adjusted a further 250rpm. but turning mine a little or a lot DOES NOT do anything to the idle..