the hotter the temp. is outside the higher my car idles...will go to about 1800RPM, any clue why?...thanks jack 85GS

 

possible mild vacuum leak, or a sticking throttle linkage, choke partically stuck?

 

i don't think it the throttle, and wouldn't a vac leak make the idle drop?...choke is a possibility

 

you'd be surprised! not all vacuum leaks cause idle to drop, sometimes it raises it.

anyway, is the car a 12A/carbie or SE? if it's 12A what kind of intake are you running?

 

12a...stock...the intake hose is gone...just the ble metal round thingy

 

Try this, the next time you have a high idle.

When the car is idling, put your right foot toes under the accelerator pedal and pull it up. If the idle drops back to normal then you have a sticky likage problem.

Mine does the same thing, idling about 1100 when it's hot. If I pull it up it drops down to 700 or so.

 

tried that ...doesn't work....my idle is 1050 or so to begin with, and i get realy crappy gas mileage...

 

check your anti-afterburn hose

 

Check the accelerator cable housing where it goes into the adjusting mechanism next to the carberator. Mine pulls out of that barrel sometimes and causes a high idle.

 

Check your timing first off, before you adjust anything. I had the same problem (as well as bad gas mileage) and it was a bad ignitor. Once your timing is good, check both float bowls for flooding. Make sure that the fuel line is centered at idle. Make sure you don't have a broken ignition wire. A lot of times, people will crank up the idle or tweak the timing to cover up a problem. Also, make sure your throttle cable has some slack to it.