Idling terror

[Grim_Fandango]

I just bought a 1990 200sx ca18det from with they removed the turbe ive servicing the motor waiting cuz im going to swap it out for the engine from m skyliner r33gt an rb25 basically all the engine has to do is work for about 4 weeks till my parts make it hence my prob it runs fine but i can get it to idle not even if i beat with a stick!what could be the problem?(as to why im spiling the skyline Dont ask i was drifting and somebody's yard Crossed my path!)

[themadscientist]

what RPM does it try to idle at?

[float_6969]

I mean you no offense, but is English not your first language? I'm having trouble understanding your post

[themadscientist]

I think he has a CA18DET power 200SX that is going to get an RB25DET swapped in soon from a Skyline he wrecked and the CA is not idling right and he just needs it to run for a couple of months before the swap,,, Lik forealz

[float_6969]

I to your interpreting skilz!

As TMS said, what is it idling at?

[themadscientist]

It is a sad commentary though when someone who obviously speaks English as a second language makes more sense than most American High School graduates. fo-shizzle

[Grim_Fandango]

yeah sorry bout my english im from the caribbean and its actually my laptop keyboard who helps me with the typo's anyways it tries to idle at like 500 rpm and sounds like i got a baddas cam in it like a V8 or something.its sounds like the engine is almost turning off but it doesnt(if i let him do it long enough it will though) and another funny thing when im driving if i push in the clutch and lets say i was at 4000rpm itl stay stuck there unless i remove my feet from the clutch slowly and that will brin it down agian to around 500!

[fitch9014]

is the motor cold when these things happen? these idling terrors?

[Grim_Fandango]

Nopes i thought it was cold too but nopes that isnt the prob little extra info i live in a caribbean island that means always sunny weather26 C is a cool day for us so nopes it aint cold!is there a sensor or something that regulates the idling of some sorts?

[fitch9014]

what i meant to say is, is the car "cold", as in not warmed up yet. it's sort of a generic problem with this engine to idle poorly, sputter, shimmy, shake, and otherwise act as though it's possesed by some sort of automotive demon until it gets "warm". not to say there aren't ways of fixing (or exorcising) it, but i don't know any of them execpt to be paitent for it get warm...

i think it's got something to do with the cold idle valve, though

edit: mine does that thing where it dies if you lift the clutch even if you rev it up when it's cold, just like you described, sorry i couldn't help more
Modified by fitch9014 at 7:23 PM 12/12/2006

[CadetLD]

Yep, my CA runs quite devilishly untill its warmed up to full operating temerature. Almost as if the throttle is an on/off switch. After about 5 minutes or so it runs perfect. As for the clutch problem,I have no idea.

Oh, and check your sparkplugs/coils, if the plugs are fould out it can cause this, also the spring inside the coils may be rusty or dirty, or one of coils itself may be bad but that would casue it to run TERRIBLE.

Just my 2 cents. -Shane

[Grim_Fandango]

nopes even when its warmed up itl still idle bad il recheck the coils about the spring cadetld cause one of them did look funny anyways right now im putting a turbo back in itim hoping to start 2morow then wel see what happens

[themadscientist]

You should be idling at around 750rpm. If a basic tuneup does not bring the idle back up, you have no vacuum leaks, and that truly is the only running problem then turn the idle up with tha AAC valve on the side of the intake.