telsonman

Ok, so I was looking at the solenoid and vacuum tree on my passenger side because I don't think my EGR valve is working right. I found these to open lines. I don't know what they go to, nor if it matters if they aren't blocked. My smog pump has been deleted because the guy that put my heads on deleted them for me. The picture is taken from atop the egr solenoid, which is in the bottom left of the picture. Any help here???



Ok, now I don't think my EGR is working right. My idle hangs like a sumbitch. Everything else is good(tb, iac, etc). In this picture, i circled the line that i plugged up to my EGR(just to see what would happen) and it made my car sound a lot better at idle, and i'm thinking that there is no vacuum at all going to my egr. I just want this hanging idle fixed


anyone???

Joel5.0

You're trying to solve the problem the wrong way......

1. Those are the TAB/TAD solenoids for the AIR injection system, the EVR is the solenoid that should be on top of those two.
2. The EGR is supposed to have vacuum only at part throttle under load conditions, not idling or free revving in neutral.
3. Having the EGR non-functional will not create any idle or driveability problems. The EEC automatically deletes its function as soon as it detects an EGR failure code.
4. Need to check the system for failure codes in order to see what failures the EEC is working with, run a DIY KOEO/KOER/Cylinder Balance Self-Test combo first.

telsonman

Ok, I'll run the self test, but what could be causing a hanging idle if its not the iac, tb, or tps??? I'll be driving, and when i switch gears, or come up to a light and shift to neutral, my RPMs go up a couple hundred, then it hangs at around 1400 before coming down.

87Stallion

Mine did the exact same thing and I went through 3 IAC before it stopped.

Joel5.0

Do the following test..... make sure you're in an empty open area...... start to roll in first gear up to 10-15 MPH, let the car rolling, press the clutch..... idle should "hang"..... as soon as you get the speed below 6 MPH, the idle "hang" should not happen. That is the idle "dashpot function" in effect. At any speed above 6 MPH, the system will not allow the idle "in-neutral @0 MPH" strategy to be in effect...... and that is normal.

telsonman

well i get that, but i don't understand why it takes 3-4 seconds before it goes down to idle range. its really annoying.

telsonman

also, should i plug those 2 lines that are in the first photo??? i'm wondering if they are causinga vacuum leak

Joel5.0

It is programmed in the EEC, it is expected that you don't leave the car in neutral while car is moving for that long.... and yeah, cap those lines.

telsonman

is it possible that the EVR is bad, ie no vacuum getting to the egr while moving??? I'm going to check for vacuum leaks in the morning.

Joel5.0

Run the self-tests, ask the system what it's working with, don't gue$$....... it's the only way to find out for sure.