My son's car just started acting up it runs great but when he like comes to a light or slows down the idle drops like it's guna shut off, we haven't let it actually die so not sure if the car would. Anyway the previous owner said it's probably the idle air control valve or whatever it needs to be cleaned.. just trying to get some more options so let me know. Thanks

 

Yea start with the IACV, its on the back of the intake manifold. You can try removing it with the coolant hoses still attached and try cleaning it out with brake cleaner and long straw, If you remove the coolant hoses makes sure the let the car idle after re installing it and burp any air out.

 

thanks we will give it a try. I'll let u know how it goes. Gunna try it without removing the coolant hoses.

 

we checked the IACV and it looked clean but when my son felt around underneath by the hoses he got coolant on his hands one of the hoses was almost off so he pushed it back on and tightened it, we took the car for a test drive and it ran great no idle problems so I don't know what was going on

 

How do U burp the air out ? We might replace the hose

 

To properly burp the car, you put the nose of the car on an incline or raise it up a bit so bubbles tend to flow forward towards the radiator. You loosen the radiator cap and barely have it on. (Do this with the car cold.) I check the coolant level in the radiator and top it up before putting the cap on loosely. Make sure to put the heater to max hot inside the car (no need to turn on the blower fan). Now start the car up and let it idle until the radiator fan kicks on at least 2 times. (I do three) Now shut the car off, top the radiator up to the filler neck and put the cap on fully tight. And top the coolant recovery reservoir to the max line. As the car cools the reservoir should drop down to no more than the minimum line. Your car is fully burped as per the factory service manual.

 

Great news!

sounds like you had a vacuum leak!

This!--

 

The car is running fine so far on the 2nd test drive now. We popped the hood first and there's a little fluid on the IACV hose that goes around the side kinda under air intake. The hose feels like it's on tight so idk? Any ideas or is that normal lol my son think make hose is to tight?
thanks again for ur help

 

The hose will leak eventually over time, the hose gets brittle and cracked.

You can either replace the hose and re burp the cooling system.

Or you can bypass the IACV its very common, just use a longer hose from the where it comes from on the thermostat or radiator hose fitting straight to the back of the head/ block. Leave the 2 ports on the IACV capped with a rubber nipple or Loop it with a short hose.

 

Can u explain how to bypass IACV in more detail for me plz? The car is still running good, no idle problems anymore, just a little coolant on the end of one of the hoses it's not dripping and feels like it's really secure so idk

 

The coolant hose runs from the thermostat housing usually to the throttle body then from the throttle body to the IACV then from the IACV to the back of the engine, you basically use a long hose and skip the throttle body and IACV and route the hose directly from the main source usually thermostat housing to the back of the engine when the hose would route from the IACV.

Let it dry and keep an eye on it! if it isn't broke don't fix it right! If it is leaking check the hose condition the clamp may just not be on all the way or what usually happens is it will tear and leak where the clamp is and replace it, if necessary. Any dealer can look up the part as long as you tell them the year of the engine.