IACV - I Do Not Have The Brass Screw Everyone Is Talking About - PICS

[Peabody]

I am still having Very High Idle problems with my 90. When I come to a stop it drops down to 500 RPM's and then climbs slowly to 1500 RPM's and will not come down. Also when I start the car it starts and 1500 RPM's and does not drop when it is warm.

I took my IACV off and posted that I did not see the brass screw with Epoxy to remove and clean. I thought it was the large screw in the back and felt like an idiot because I thought that was the brass screw that needed to be cleaned. Well I took the thing off today & I was right about not having that screw. Look at the pictures and check it out.

What should I do if I cannot clean it? I really do not want to spend $170 and the new part does not work. I saw in another post to check the Air Regulator but the hose is so hard I cannot squeeze it. I did unplug it and that did not change the idle.

My car went from getting 20/28 MPG and now getting 14 city because I am wasting so much gas at lights.

[Peabody]

Another Pic

[Peabody]

Another pic of how clean it was.

[vancouverbc]

Nice pics. Your IACV is definitely different from the 91-94 iacv. You dont have the brass screw.

[vancouverbc]

If your idle falls to 500, that probably implies your air regulator is not stuck open. If I recall, you said your idle is fine when you are coasting? Your idle only goes up when car is stationary. That is probably the key to the puzzle.

[180fan]

that's a sohc iacv. you're lookin at the idle adjust screw buddy.

[Peabody]

Yeah I know it came off my car. People were saying to take the epoxy off the brass screw and remove & clean the screw. I thought they were talking about the sohc but now I know they were talking about the iacv on a 91. Can I use a 91 iacv on my sohc?

And yes vancouverbc I said your idle is fine when you are coasting? Your idle only goes up when car is stationary. That is probably the key to the puzzle. But that is a puzzle I cannot figure out. It is really not fine when coasting just lower. When I push in my clutch and coast it drops sometimes down to 400-500 RPM's and will stay that low and then when I come to a stop it starts to climb to it hits 1500 RPM. Also when I first start the car it will sit at 1500 RPM's and not go down. That is why I tried to clean the IACV.

Could I be stuck in high idle mode? I live in New Orleans and it is still in the 70's so I do not know if that could be possible. Can I check anything about that and also I took my TPS off to clean and never adjusted it with a volt meter. I need to search for a post on that. I did see one but it was hard to understand. I know how to use a volt meter, but I was not sure where I should check the voltage. On the harness, on the sensor, should the sensor be pluged in and checking through the wires or on the pins of the sensor. I know it should be 0.45-0.55 but not sure where toget that reading.

Sorry I changed the subject in my own post. I know people get pissed when this happens.

Will mess with it more in a few hours. I know I have a factory manual just need to find it. THANKS FOR THE HELP!

[vancouverbc]

Test to see if you aac solenoid works by hooking it up to 12v dc source.I tried getting specific answers to my idle problems but never got proper answers so I fixed it myself.

[FUNGC]

Yeah I know it came off my car. People were saying to take the epoxy off the brass screw and remove & clean the screw. I thought they were talking about the sohc but now I know they were talking about the iacv on a 91. Can I use a 91 iacv on my sohc?

tha 91 iacv looks exactly the same. only the bottom where that tube is straight on a sohc. and doch has a bend to it. irc