hey, i have 2 22re trucks.

One is a 87. -15C to +40C it always ides at 1000rpm..... hot or cold. It even drives smooth when hot or cold. I've had 2 engines in it since i got it, both were complete with efi and harness etc..... and they both idle'd exactly the same.

i also have a '90 . when cold it idles at 2000 then 8-900 when warm. it drives me crazy sometimes. I have searched, and i found lots of info, but couldnt find the answer to my question.

Is there anyway to make my '90 idle the same as my '87? I have a spare complete '87 efi setup, is swapping that on the only way to get rid of the high idle when cold.


also, i know that the cold high idle is normal, but every other vehicle i have had that had that feature, you could just tap the gas and it would idle at the "warm idle speed"

 

do they both have the same throttle body?

 

my 91 idles the same! it dont bother me none. why would you try to fix somthing that isnt broken?

 

Run a search on auxiliary air valve or idle air control valve. That controls the cold fast idle and the switch to warm curb idle.

Here's simple test to run for your '87, in the meantime. There's a large vacuum hose running from the bottom of the throttle body to a black, squarish component just under the upper intake plenum.....the aux. air valve. From the AAV, the line continues on up to the driver's side of the plenum body. When the engine has warmed up, take a pair of pliers or vise grips and clamp that hose either at the throttle body or at the side of the plenum...doesn't matter. See if the engine slows down to a normal idle speed.

If not, you have a vacuum leak somewhere.

 

because its annoying. not to mention a little hard on a tranny with 475,000km on it.