What is the problem with this car?

[bearfrods]

I have a 1989 Honda Civic. The problems I'm about to describe happen mainly when it's in warm/hot weather.

I've noticed that the engine tends to idle (when stationary and nothing else is on) at 750-1000rpm. When the car hasn't moved and I turn on the aircon, the rpm drops to about 500rpm. If I turn the aircon on when the car is moving, the next time the car comes to a stop or I have to change gears, it stalls.

What's wrong with this car?

 

[RonJ]

Clean the IACV.

 

[vtac_ej6]

My car does the same thing. Doesnt matter if heat or air is on but it will idle from 750-1000 then drop to 500. Never stalls though

Sent from my SPH-D710 using Tapatalk

 

[00siboy]

Clean the IACV.

Pre-1996 have FITV if I'm not mistaken. Thats a pretty common thing to clean too.

 

[RonJ]

The engine probably has both an IACV and FITV. But the FITV would not cause a low idle problem for a warmed up engine.

 

[mymmeryloss]

Dammit ron! Whenever i wanna post in a tech thread, u have already killed it! Ur killin my mojo!

 

[emerican]

^ x2 lol

 

[RonJ]

Dammit ron! Whenever i wanna post in a tech thread, u have already killed it! Ur killin my mojo!

Sorry man. I'll PM you advance when I plan to post in a tech thread.

 

[00siboy]

Oh I forgot the problem was after it warmed up.

 

[young_]

Sorry man. I'll PM you advance when I plan to post in a tech thread.

xD