Re: Idle speed

["Harold McElraft <hmcelraft@xxxx>" <hmcelraft@xxxx>]

Jerry

Does the engine starve out for fuel when cold or is it an idle-up 
problem until the engine warms? Careful listening can give you a 
good idea of which it is. If it is starving for fuel it is most 
likely the control pressure regulator not functioning correctly. If 
it sounds like engine speed you should check the idle motor for 
proper operation. I have seen them freeze in one position or, the 
micro switch is not really working but the idle motor is stopped in 
a position where the engine idles ok when warm. The idle motors 
don't fail that often but they do fail. If the motor does not seem 
to be working and and all else appears ok, check to see if the diode 
wire in the compartment behind the driver seat is connected. That 
wire runs directly from the micro switch on its way to the idle 
speed ECU and I have seen that come loose and stop the idle motor 
from working. In any event, you are in for some diagnostic fun. Read 
section D, especially section D:05, in the workshop manual.

Harold McElraft - 3354

--- In dmcnews@xxxxxxxxxxxxxxx, "Jerry" <jlharry@xxxx> wrote:
> Hello List
> Have a problem, need advise.
> My car starts on first try , runs for a few seconds and goes to 
low idle before it is warm enough to run, it tries to idle at 750 
rpm but dies. I can restart it afew times, when it is warm enough 
it will keep running.
> What tells it to stay at high idle until it is warm enough to run?
> 
> Thanks for any help.
> Jerry
> Vin# 4890 
> 
> [Non-text portions of this message have been removed]