S14 idle problems

ONLY for ADVANCED technical discussion about the 240sx!
Djinfinit
Posts: 71
Joined: Mon Oct 29, 2007 11:54 am

Post

Hey guys, im having a problem with my s14 ka24de 1995 AUTO:(. It starts up fine cold, hot, or warm, but after its at operating temperature it just goes mad. Idle bounces, car stumbles backfires, or misfires not sure which one, and if your sitting in it its the worst ride ever in park. Now ive taken out the ecu to check for codes, so its on the passenger floor, but no codes. Im really lost as to what is causing this problem. Also if you put the car in gear its fine once again, problem only occurs in park, or neutral.

If someone will please watch this lenghty video of my car, and inform me of what might be causing the problems it will be much appreciated. Dont be afraid to guess. either:)

http://www.youtube.com/watch?v=eYHv2oQx67A
Modified by Djinfinit at 8:46 PM 3/11/2009


Djinfinit
Posts: 71
Joined: Mon Oct 29, 2007 11:54 am

Post

any ideas?

User avatar
nothing
Posts: 252
Joined: Wed Jul 11, 2007 8:21 am
Car: 1991 Nissan 240sx

Post

I would inspect spark and fuel delivery (specially the fuel pump). In reality I think we'll need more info. than that. I didn't really sit through the whole video, though. Has it been doing this recently? Did you do anything to it previous to it doing this? How do your spark plugs look?

I know this isn't much help but this is at least a free bump.

Djinfinit
Posts: 71
Joined: Mon Oct 29, 2007 11:54 am

Post

Spark plugs are brand new. I changed the distributor, took of the timing chain guides, removed the clutch fan, took off bottom portion of the air intake box..

Im really lost as to what to check for.. because like when in gear or reed its pretty much fine, but when idle it acts up.

I sprayed combustion chamber cleaner, and throttle body cleaner.
Modified by Djinfinit at 4:20 PM 3/12/2009

Djinfinit
Posts: 71
Joined: Mon Oct 29, 2007 11:54 am

Post

Good news.. took it for the first run after winter, today(canada). And all the problems vanished.

User avatar
mexicanracer03
Posts: 563
Joined: Thu Nov 09, 2006 12:57 pm
Car: 95 S15FRONTEND SR20DET and 97 2JZ GT4294/ 93 SC300 Black/ 95 SC300 Green

Post

Djinfinit wrote:Spark plugs are brand new. I changed the distributor, took of the timing chain guides, removed the clutch fan, took off bottom portion of the air intake box.. Modified by Djinfinit at 4:20 PM 3/12/2009
Check the Timming Since you messed with it. And Double check it or Even Tripple check.

Timming being off will do all of the symptoms you mentioned.

User avatar
mexicanracer03
Posts: 563
Joined: Thu Nov 09, 2006 12:57 pm
Car: 95 S15FRONTEND SR20DET and 97 2JZ GT4294/ 93 SC300 Black/ 95 SC300 Green

Post

I wouldn't disconect the MAF sensor. That is irrelevent to you idel issue
Modified by mexicanracer03 at 12:30 PM 3/15/2009


Return to “240SX Technical Forum”