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420A I replaced my air idle sensor , but now my car idles around 2k rpm when I drive it

Sapoberg

Probationary Member
3
0
Apr 17, 2021
San jose, California
I changed the idle air sensor on my 1995 Mitsubishi Eclipse GS but when I started the car, it would idle around 2k rpm, I’ve disconnected the battery and waited around 10 mins and tried it again but it’s still the same problem, I’ve tested the sensor by just connecting it and turning the on ( not starting it ) and the sensor seems to work fine , now I’m all confused and I’m not sure of what the problem is
 

Sapoberg

Probationary Member
3
0
Apr 17, 2021
San jose, California
Possible air leak on air intake hoses (eg. clamps not tight)?
No sir, everything feels tight , I feel like I might be missing one clamp here on the right side

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Sapoberg

Probationary Member
3
0
Apr 17, 2021
San jose, California
You mean the IAC Valve? You need to adjust it when you replace it. Try unscrewing the tip a turn or two (counterclockwise). Unscrew the tip and the car idles down, screw it in more and it idles up.
Okayyy okayyy I see , yea that actually idled it down , it doesn’t idle at 2k rpm no more , it idles normal but when I step on the accelerator and let go , the car doesn’t start to slow down, sometimes it just keeps accelerating even tho my foot isn’t on the pedal
 

BLACK'98DSM

Proven Member
3,504
1,232
Feb 9, 2019
Alabama
when I step on the accelerator and let go , the car doesn’t start to slow down, sometimes it just keeps accelerating even tho my foot isn’t on the pedal
Your throttle plate might not be closing all the way. Disconnect the intake hose and take a look.
 
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