Brokton

i have a 1990 pickup that i need to set the idle on. but the service manual is a little bit vague on what needs to be done. is there a specific target temp that is trying to be achieved?

osv

in terms of temps, are you trying to set a cold idle? what is the current idle rpm?

Brokton

I am talking about this idle procedure

osv

"2,500 rpm for 2 minutes" sounds like it's intended to be an idle speed adjustment for a warm engine? i usually do that with a timing light that has tachometer capability.

Brokton

From what I understand their goal is to heat soak the radiator so that way when the engine is at a high operating temperature will continue to idle normally. I'm just trying to better understand what their temperature goal is for that heat soak

osv

it would have been nice to see a temp operating range to set the idle at... i used to work on cars in below-freezing weather, had to put cardboard in front of the radiator to get the engine hot... running an engine for 2 minutes in that weather wouldn't have been enough.