low rpm at idle
#1
Guest
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low rpm at idle
AP1 S2000 with 80,000 miles
Warm engine, idle is 800-900 rpm.
When I turn on AC, idle drops to 500 rpm and engine feels like it's about to stall. Service manual says idle speed should increase from 750-850 to 850-950 with an added load like AC.
I recently installed an adjustable throttle position sensor from Omnipower to clear a CEL, and it worked; CEL is gone, but the idle problem seems to have gotten worse.
I've read the posts and done the following;
replaced air filter (stock --> stock)
cleaned throttle body and ports to IACV and MAP, new TB gasket of course
cleaned IACV - not spotlessly clean but it moves freely
replaced MAP and o-ring
cleared ECU and performed idle learn procedure
drove it for a week with no improvement
no CEL at present
Your suggestions would be most welcome as my next stop is the mechanic
#3
Guest
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P0122 - Throttle Position (TP) Sensor Circuit Low Input
voltage was 0.3V with the old sensor - should have no effect on the idle as the throttle is fully closed.
0.45v with the new sensor. also installed a new gasket under the sensor.
voltage was 0.3V with the old sensor - should have no effect on the idle as the throttle is fully closed.
0.45v with the new sensor. also installed a new gasket under the sensor.