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Car feels like its gonna stall. Is this happening to you?

7AT - 370z So lately i have been noticing while stopped at red lights that my rpms drop to 500rpm and my car shakes a little and feels like its

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Old 07-11-2011, 06:14 PM   #1 (permalink)
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Default Car feels like its gonna stall. Is this happening to you?

7AT - 370z
So lately i have been noticing while stopped at red lights that my rpms drop to 500rpm and my car shakes a little and feels like its gonna stall. It happens for a split second and then the rpms climb back up to 700rpms. Car drives perfectly normal. Does this happen to any of you? Any idea what it could be?
I know the obvious answer is going to the dealer but my car is too low..
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Last edited by Juruki; 07-11-2011 at 06:22 PM.
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Old 07-11-2011, 06:24 PM   #2 (permalink)
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Still, send it to the dealer or a mechanic. My guess (may not apply to 370z, but usually happens to most cars I worked with) is that there's a vacuum leak. See if issue happens when you slow down when you brake and try it without braking but with e-brake.

If it happens when you brake, probably a vacuum leak on your brake booster or its hose.
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Old 07-11-2011, 07:10 PM   #3 (permalink)
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Happens to me everytime I drive and only when stopped not annoying enough to take it to the dealer and deal with their BS
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Old 07-11-2011, 08:04 PM   #4 (permalink)
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just throwing my 2 cents in, but this happens with my cobalt when i have the A/C on and i was told it was perfectly normal which i believe it is since i've never had a problem with the engine otherwise.
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Old 07-11-2011, 08:15 PM   #5 (permalink)
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When the AC compresser comes on, the engine should speed up to take the compresser load and keep car from stalling, once compresser goes off, idle should drop to normal idle speed. Sonds like yours is dropping too low of RPM after AC shuts off. See if it happens with AC off.
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Old 07-12-2011, 11:39 AM   #6 (permalink)
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Same thing with mine.
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Old 07-12-2011, 01:06 PM   #7 (permalink)
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Quote:
Originally Posted by Ridgerunner View Post
When the AC compresser comes on, the engine should speed up to take the compresser load and keep car from stalling, once compresser goes off, idle should drop to normal idle speed. Sonds like yours is dropping too low of RPM after AC shuts off. See if it happens with AC off.
hmmmm interesting... Maybe i noticed it latety cuz ive been using the AC a lot. Im gonna see if it happens with the AC off
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Old 07-13-2011, 06:45 PM   #8 (permalink)
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Mine did this for a while and I noticed that one of the breather hoses from the intake had come off. I replaced the breather hose and used some high temp tape to fasten them on both sides. Now the car hasn't done it since.
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Old 07-13-2011, 08:34 PM   #9 (permalink)
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how many miles? Another thing could be dirty throttle bodies, that can cause a bad idle.
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Old 07-14-2011, 09:29 AM   #10 (permalink)
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Quote:
Originally Posted by shaun66 View Post
how many miles? Another thing could be dirty throttle bodies, that can cause a bad idle.
that must be one REALLY dusty area you live in. Either than or you haven't cleaned out the filters for a while.
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Old 07-14-2011, 12:00 PM   #11 (permalink)
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I'd take it in to the dealer, it should not feel like its about to stall when you have the AC on. But Ridgerunner is right, you can see and hear the revs go up when you turn on/off the AC at a stop light. Sometimes I do this for fun, I'm easily amused =).
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Old 07-15-2011, 11:28 PM   #12 (permalink)
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My z idles at 500 rpm... It has since the day i got it brand new. But then again it doesnt feel/sound like its going to stall out either.
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