SC- 1st Gen (1992-2000)

Low idle and shuttering until gas pedal is depressed?

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Old 11-25-10, 10:19 AM
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attzor
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Default Low idle and shuttering until gas pedal is depressed?

Alright so my idle is about 350-400 all of the time, sometimes on a cold start, it will die after I start moving the car, it's been like this for a while.

Things it's not:
IACV (had it replaced)
Throttle body being dirty (I cleaned it with carb cleaner and it was just out when I got the HG changed)

Things that are currently issues:
PS is leaking from the HP hose
rack and pinion is ****ed up

Is the cause of this issue the power steering leak?
Old 11-25-10, 11:10 AM
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SH_JZZ30
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Have you checked all of your vacuum hoses?
Old 11-25-10, 11:54 AM
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attzor
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Originally Posted by SH_JZZ30
Have you checked all of your vacuum hoses?
Yes, that is the first thing I checked. Keep in mind the HG was just changed, so the hoses are all good, it was doing this before aswell, with no difference in symptoms.
Old 11-26-10, 10:41 AM
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ShortyPH
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I got a similar problem but don't know where to begin. Need to press on the gas pedal to start the car and keep it from dying. Thing is it needs to warm up for 20 minutes before it doesnt stall by itself when I remove my feet from the gas pedal to put it in gear with the auto tranny. My SC is ****ing useless been working on it for 6 months still tons of problems.

I'll try to help if I find the cause of my problem or maybe I can learn on your thread with your permission.
Old 11-26-10, 01:50 PM
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Kira X
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Have you tried the 12v fuel mod? My car had similar symptoms and the 12v fuel mod fixed it.

Here is a link to it:https://www.clublexus.com/forums/per...tures-faq.html.
Old 11-27-10, 02:26 AM
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abounly
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i had the same problem it felt like the car was going to die. I use AC to temp fix since it increases your rpm.

what i did was i ran the car pretty hard and it has been working fine ever since i don't know how that fixes anything but it worked for me. carbon build up?
Old 11-27-10, 07:03 AM
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1FastSc
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i have the same problem.
Old 11-27-10, 03:15 PM
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ch1ck3n
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Are the spark plugs still good?

The distributor or coils pack still good?

Lastly, do a compression test or leak down test to further diagnose to see if there's something wrong with the internal engine component.

Hope this help.
Old 11-27-10, 05:37 PM
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attzor
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Spark plugs are new, distributor is fine same with coil packs, I just had the HG done a month ago and I've only put 200 miles on it since, no difference from before or after. It's always had this issue, when I get the new HP power steering hose, I will know if it's that (I've got a feeling it might be). And no carbon build up, just had the head machined 200 miles ago.
Old 11-28-10, 06:52 PM
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ch1ck3n
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It happens like this before you had the cylinder head machined? Okay, so you had the cylinder machined, do you re-used all the OEM parts internal components?

Yea, do let us know whether the HP power steering hose can fix this issue.
Old 11-28-10, 09:11 PM
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attzor
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The issue is no different from before or after the HG replacement.
Old 11-28-10, 09:15 PM
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gtsfire
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Originally Posted by attzor
Spark plugs are new, distributor is fine same with coil packs, I just had the HG done a month ago and I've only put 200 miles on it since, no difference from before or after. It's always had this issue, when I get the new HP power steering hose, I will know if it's that (I've got a feeling it might be). And no carbon build up, just had the head machined 200 miles ago.
My VVTI is doing the same thing. I have a thread on it as well.

I just replaced my ps pump and had my stock HP line rebuilt. Didn't help.
Old 11-28-10, 09:47 PM
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^ That's not good, I gotta replace mine anyways, it's spewing PS fluid.
Old 11-28-10, 10:37 PM
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ch1ck3n
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Is the check engine light on? If it does, then is there any code?

Have you cleaned the MAF? Or maybe you need a new MAF? Or if you have a friend with the same car, try to use his MAF to see if the problem still exist.
Old 11-28-10, 11:51 PM
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Doubt it's the maf, but it will probably the next thing I check after I do the PS HP line.


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