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H.A.R.T 4G63DSM
05-30-2004, 02:36 AM
Okay heres the story. My car had mad idleing problems, when I would drive and put the clutch in the idle would drop below 750rpms and almost die out. Okay so a bunch of people told me to change the ISC (Idle Speed Control). I did and it idle well but it goes up to 2000rpms when the cars gets warmed up. But when it does idle at 900rpms, it sounds like Im running on 3 cylinders. Pls help. :headache: :headache: :headache:
Matt D.
05-30-2004, 02:41 AM
What do you have for a blowoff valve, and is it vented?
H.A.R.T 4G63DSM
05-30-2004, 02:44 AM
stock BOV...
Matt D.
05-30-2004, 03:12 AM
Originally posted by H.A.R.T 4G63DSM@May 30 2004, 01:44 AM
stock BOV...
Does it still blow back into the intake before the turbo or is it vented to the atmosphere?
LightningGSX
05-30-2004, 04:55 AM
Vented BOV, other intake leaks, BISS screw misadjusted, missing BISS o-ring, alot of things can cause idle problems.If you are local, I'd recommend having an experienced DSM'er check it out, and your turbo problem as well.
Pushit2.0
05-30-2004, 10:37 AM
Yes get it check out by someone who knows what there looking at. Saves time and money.

~John
Kougar
05-30-2004, 01:08 PM
Make sure the spark is good too. Cap, rotor, plugs, and wires should be checked. I had big problems for a long time because one of my wires never connected 100% to one of the plugs, so i ran 3 cylinders.
Raptor
05-30-2004, 02:18 PM
Originally posted by Kougar@May 30 2004, 12:08 PM
Make sure the spark is good too. Cap, rotor, plugs, and wires should be checked. I had big problems for a long time because one of my wires never connected 100% to one of the plugs, so i ran 3 cylinders.
The clutch technician wants you to check the cap and rotor on your car with no distributor. Go figure.
Kougar
05-30-2004, 02:30 PM
...shut up :razz2:

I'm used to the G54B, not the 4G63. Long live TORQUE
Raptor
05-30-2004, 02:38 PM
Kougar http://209.173.220.82/ani/moon.gif

As far as the problem goes, if you are not having ignition problems at higher RPM, I wouldn't waste time looking for it at idle. Check everything eric(LightningGSX) mentioned, after that, go throught he BISS adjustment while grounding the appropriate plugs then check your base timing while you are there.