Watch out when swapping hoses

[kendem]

I replaced my idle emission hose, you know the preformed hose that connects from the left side of the MAF to the metal tube that feeds the IACV and air regulator.

Well yesterday I bought a preformed replacement hose from Autozone that looked close in shape. I bought it from Autozone because the dealer wants $56 + tax for a new original hose.

So I had to cut the ends of the Autozone hose to make it fit. After installing it my car idled high and was hard to start??? The hose ends are tight, the only thing I could think of causing the problem is the diameter of the hose I replaced it with was larger.

So maybe there is too much air flow? So I then replaced it with another Autozone hose with a diameter the same as the original. It seemed to work better. I'm going to find one from a junkyard and try that.

Ken

[danielsan]

i drove around without it on for a minute and didnt notice a damn difference. just letting you know.

[kendem]

Well thats good to hear. I disconnect mine and my engines dies while ideling. Maybe the hose is not my problem. I did however clean my throttle body with throttle body cleaner around the valve area before replacing the hose. I wonder if any gunk could have got lodged in my air regulator? My symptions are high idle and hard to start having to depress the accelerator pedal to get it to start. Damn, my car was running just fine until I did this.

[danielsan]

never mind i was thinking of the hose on the right side of the air filter right beside the MAF.

are you talking about the hose on the charcoal canister? if so it sounds like you have a vacuum leak then.

[kendem]

The hose you are talking about on the right side coming out of the air filter housing is the hose that connects to the secondary air system. It sends fresh air into the exhaust manifold which is controlled by the PAIR soleonid valve.

I was refering to the emission hose on the other side and attached to the MAF housing, it is right next to a smaller hose also attached to the MAF housing. The smaller hose is the atmospheric vacuum line for the swirl, egr/cannister and pair valve soleonid valves.

Getting back to the emission hose, it connects to a metal tube which connects to the air regulator and the IACV unit. I thought the replacement hose I used might be too large in diameter so I went with another hose in the same diameter as the original.

As it turns out the hose had nothing to do with the engine idling high or hard to start, what happened is I cleaned the throttle body BEFORE I replaced the hose and I believe I sucked crap into the air regulator and idle adjustemnt.

I know this because when I pinch the hose to the air regulator while the engine is idling, the RPM's drop significantly. So this weekend I will have to pull off my air regulator and also my idle adjustment and clean and test them.Ken