So after many many weeks of my buildup im almost done. Last night was the first start up of my car after many many weeks. It started up on the first try, and with no check engine lights. (plus sign there) But the idle was high at first around 1500 rpms(normal cold startup idle). But once warmed up the idle did not drop. It stayed around 1200 rpms consistent.

Also a slight humm from the timing belt area. Im pretty sure its too tight, simply adjusting the tensioner will solve this correct?

 

A consistently high idle means you have more air going into the manifold than what you need to hit a target idle rpm.

Check the idle adjustment screw as well as for vacuum leaks getting past the IACV. Plug the IACV port in the throat of the throttle body (upper port, bottom one is for FITV), and see if the car wants to die or dies. If it doesn't die, then you've got a vacuum leak.

You can also look at IACV duty cycle on the OBD-2 real-time sensor scan to see if it has really low duty cycle (which would also indicate a vacuum leak).

Look at throttle cable to tension as well as manually pushing the throttle pulley to the closed position to check for a sticky throttle plate.

Tension the timing belt as specified in the manual. Sync everything to TDC, loosen the tensioner, rotate two to three cam teeth CCW as you watch the tension b/w the cam gears (you'll see it get taut), and then tighten the tensioner bolt down.

 

thanks for all the help man, you've been alot of help on my project. We'll see how it goes once i get to the other shop location (where my car is at) Ill try and see if I can figure this out. By the way any pics or diagrams of this item you are talking about. Did I have them pictured in any of my previous posts.

heres a an old shot
side view of Tb (where is the idle adjustment screw)


Is the FITV/IACV pictured in this picture at all?

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Tur*bLu &raquo;</TD></TR><TR><TD CLASS="quote">side view of Tb (where is the idle adjustment screw)
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The idle adjustment screw is just to the right of the upper-left throttle body mounting stud/nut. It accepts a standard screwdriver.

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Tur*bLu &raquo;</TD></TR><TR><TD CLASS="quote">Is the FITV/IACV pictured in this picture at all?
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IACV is the solenoid hugging the back of the manifold. The ECU controls it to regulate the amount of air bypassing the throttle plate to control idle rpm.

On OBD-2 motors, there is no fast idle thermo valve. The cold-start, high idle condition is solely controlled by the ECU via the IACV.

 

Plug the IACV port in the throat of the throttle body (upper port, bottom one is for FITV), and see if the car wants to die or dies.

where is this?

 

In the inner bore of the throttle body just in front of the throttle plate. Take a look in the TB throat and you'll see just that one port. Plug it with your finger with the motor running.

You can kind of see it in this picture.

 

Ok so if it wants to die- what does it mean?

If it doesnt do anything when I plug it, then what does that mean?

 

Try this:

1.)Start the car.
2.)DON'T touch the gas!
3.)Let it idle for about 15 mins. This will self-calibrate the ECU.
4.)Shut off the car to save the settings.

It can't hurt. If that doesn't fix the problem, make sure to do it again after you've fixed the problem.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Tur*bLu &raquo;</TD></TR><TR><TD CLASS="quote">Ok so if it wants to die- what does it mean?</TD></TR></TABLE>
Then there are unaccounted for vacuum leaks.

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Tur*bLu &raquo;</TD></TR><TR><TD CLASS="quote">If it doesnt do anything when I plug it, then what does that mean?</TD></TR></TABLE> Then you have a vacuum leak that needs to be found and plugged.