my rpm is idling low 4-5 when it should be at a grand. how do i tighten the throttle cable? any help would be appreciated.

 

It IS a stupid question if you don't say what year/car and what engine.

 

You DON'T use the throttle cable to set idle RPM. Regardless of what year or model, the throttle cable should go a little slack so it never holds the throttle open.

 

disconnect the iacv. you'll get a code 14. locate the idle adjust screw on the side of the tb and raise your idle speed.
turn car off and reset the ecu.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by eda6 &raquo;</TD></TR><TR><TD CLASS="quote">disconnect the iacv. you'll get a code 14. locate the idle adjust screw on the side of the tb and raise your idle speed.
turn car off and reset the ecu.</TD></TR></TABLE>Yes. Depending on what year/model/engine you're talking about, you use that method to set the idle speed to some specific RPM that's LOWER than the normal operating idle. (That's called the 'base' idle speed, maybe somewhere from 400 to 600 rpm.) When you plug the IACV back in, the RPM goes up where it belongs.