 RPM dropping to like 500 |
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 Mar 7, 2006 - 7:01 PM
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 Enthusiast  Joined Jan 13, '06 Currently Offline Reputation: 0 (0%)  |
when i turn on my A/C the car is supposed to kick
up the rpm. but for the past 2 months at idle the rpm drops to like 500 and the car starts shaking.?? its a 7a-fe 95 corolla. |
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Mar 7, 2006 - 8:02 PM
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 Enthusiast Joined Jun 1, '03 From WV Currently Offline Reputation: 2 (100%) |
Mine does this too, then levels out. When I turn it off, the rpm goes up, but then levels off.
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Mar 7, 2006 - 8:04 PM
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Enthusiast Joined Jan 13, '06 Currently Offline Reputation: 0 (0%) |
why
dose it have something to do with the A/C idel up valve? top center of engine |
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Mar 7, 2006 - 8:19 PM
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 Enthusiast Joined Jun 19, '05 From Nebraska Currently Offline Reputation: 4 (100%) |
No it has to deal with the fact that we have relativly small engines and AC condenser demands quite a bit of power to operate.
This post has been edited by hitcachi: Mar 7, 2006 - 8:19 PM -------------------- Teh Celica sleeps for Winter '06. Suspension overhaul begins........
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Mar 7, 2006 - 8:24 PM
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 Enthusiast Joined Jan 28, '05 From Redondo Beach, CA Currently Offline Reputation: 86 (100%) |
its the IAC...clean it or get a new one.
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Mar 7, 2006 - 10:17 PM
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 Enthusiast Joined Apr 14, '03 From Long Island, N.Y. Currently Offline Reputation: 1 (100%) |
open your windows, rpm idle should be around 1k,
 but i would seriously check your pully's, alternator and also the a/c unit. but there probably is nothing you can do about it. small motors, big underdrive |
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Mar 8, 2006 - 2:48 AM
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Enthusiast Joined Jan 13, '06 Currently Offline Reputation: 0 (0%) |
**** i think i figured it out.... i teed the A/C idel up valve vac line for my boost gauge? i think thats what it is. ya and the gauge its been acting up
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Mar 8, 2006 - 12:03 PM
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 Moderator Joined Oct 1, '02 From fall river, ma Currently Offline Reputation: 13 (100%) |
its the A/C idle up valve.
-------------------- Former Team 5SFTE pro member ;)
 13.6@108MPH, 5SFTE Powered |
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Mar 9, 2006 - 9:55 AM
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 Enthusiast Joined Apr 18, '05 From Lincoln, Ar Currently Offline Reputation: 7 (100%) |
If your engine is not ideling well, there is a screw that sits on your Throttle butterfly. Take it out or screw it in some more so that more air goes into the manifold chamber. That will raise the RPM by a notch.
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Mar 9, 2006 - 10:09 AM
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Enthusiast Joined Jan 13, '06 Currently Offline Reputation: 0 (0%) |
its fine with out a/c. only when the ac comes on.. also noticed my radiator fan stoped working. when it gets hot theres power going to it but ...the fans dead?
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Mar 9, 2006 - 10:11 AM
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Enthusiast Joined Jan 28, '05 From Redondo Beach, CA Currently Offline Reputation: 86 (100%) |
QUOTE(southwest2118 @ Mar 9, 2006 - 10:09 AM) [snapback]405061[/snapback] its fine with out a/c. only when the ac comes on.. also noticed my radiator fan stoped working. when it gets hot theres power going to it but ...the fans dead? IAC!!!!!!! -------------------- |
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Apr 5, 2006 - 5:13 PM
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Enthusiast Joined Sep 7, '05 From Ensenada, Baja California, Mexico Currently Offline Reputation: 0 (0%) |
LewFX, you wrote that could be the IAC valve, this valve is also know like ISC idle speed control?
Is the one in the throttle body? here a picture 
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