That's fine. Mine would operate is 1st and usually 2nd with the relay, but it rarely worked in 3rd. You should be able to CLEARLY hear the switchover in 2nd, 3rd, and 4th. When I removed the relay, it worked flawlessly in each gear 100% of the time. I believe Nealoc, Briguy, KevenSE, MrCranman, and myself all are running without the relays. I also know that everyone I listed except Cranman, experienced problems running the relay. Maybe it's a 5 speed thing since we're using the VI far more often.


Dave

 

I'm not using a relay with my setup either. I have never heard the switchover when the butterfly valves open, but can definitely feel the increase in power. My rpm switch is set at 5200.

 

i am also thinking about putting a red led light that came with the alarm,connect it to the relay and run it into the dash to tell me everytime the relay activate the vaccum switch(just like the shift light)so i don't have to worry about my relay or Harlan switch is working or not.

 

You should definately be able to hear the switchover in 2nd and higher gears.


Dave

 

My problem is when I start the car on a cold morning it will idle at 1,500 which is normal for a cold start. But if I drive to the gas station like 2 miles from my house shut the car off, pump gas and the start the car again my idle will stick anywhere between 2-3k. The idle will only fall back to about 7-800 when I disengage the clutch and drive away. Anybody know what this could be? My throttle cable was pretty streched out, but I tightened it all the way down after the install. I am clueless on this one.
Thanks,

Jason

 

I don't think I've ever heard the switchover either. I had the RPM switch set to 1500 in my garage and the valves were definitely opening at that point, so I bumped the switch up to 5000.

The car sounds different throughout the RPM range when compared to the stock manifold, but it doesn't sound different 4-5k vs. 5-6k. I can surely feel the power, though. About a week ago I hit the rev limiter for the first time thanks to Mr. VI. I used to be able shift by sound as the engine choked up top, but now it just sounds and feels beautiful all the way to 6800.

 

I wonder why I don't then. Could it be because the rpm switch is set at such a high rpm? I remember you said a while back that you could hear yours alot better at lower rpm's. Hmmmmm

 

I've got my VIM set for a 5200rpm and I still can hear it clearly. The tach is off by ~300rpms so I really don't hear it until an indicated 5500. If you've got it set at 5000, you should definately hear it. If you don't hear it, then it's not working. I use to think mine was working all the time when I had the relay. Then I decided to tape the RPM switch on the dash so that I could see the red led. It was only then did I truely realize my VIM was rarely working.


Dave

 

i can definitly hear mine switch over,a slightly hissing sound(like a tiny turbo) and the car will pull very fast to red line.

 

 

Can anybody help with this?
Thanks

 

have you try to clean your iacv, maybe it might help,good luck

 

when the car is on, take the throttle cable and cruise control cables off the throttle body. if it idles normal you found your problem. otherwise i would guess your iaac is a little lazy.

 

Well I cleaned me IAAC. And the throttle cable is pretty loose, the test you recomended sounds like a good idea I need to try that. I have to take the cruise cable off too? Is there such thing as a throttle cable being to tight?
Thanks for the responses!!

 

Yes, you most definitely can overtighten the throttle cable. The test Confused recommends is perfect...if this happens again, shut the car off immediately and disconnect the throttle cable. Start it up again and see if the idle is still too high.

If the idle comes down, then loosen up the throttle cable.

If not, either the IACV valve is acting up, which I doubt, or you fast idle cam mechanism is messed up. That part is built into the base of the throttle body. It has a small thermister (temperature-actuated plunger) that pushes on a cam actuator to force the throttle open slightly when cold. There is an adjustment screw on that fast idle cam.

 

Fast idle cam mechanism? I dont think I saw that under the TB? Does anyone have a pic of this thing? The onlt thing I remember seeing is a hose under the TB. Thanks again guys!

Oh one more thing. I was doing some testing last night. I was looking at the RPM switch while going above 5K. In gears 1-3 the red indicator light came on, like it is supposed to. Then I stoped at a light and tried again then NO red light came on above 5k but my VI felt like it was working. I don't know man I am confused.