hi rpm at start up

Hi all in group, I'm just a little curios about start up on a 97 voyager 3.3
liter when cold, it rev's up over 2 grand for a few seconds on only cold
starts, It seems a little bad for a cold engine at 25 degress to start up
and rev up that hi before oil is up at full oil pressure, is it normal or
not it doesn't seem to rev that hi when the temps aren't so cold, is there
any pcm updates that may help, runs fine otherwise.

thanks for any info

make sure the pcv hose is not broke or cracked causing a vac leak that might
give you a high start up idle and replace the pcv while you are at it so the
engine does not sludge up also clean the throttle plate inb the throttle body
enough carbon there can cause a high start up idle also

Larry wrote:

> Hi all in group, I'm just a little curios about start up on a 97 voyager 3.3
> liter when cold, it rev's up over 2 grand for a few seconds on only cold
> starts, It seems a little bad for a cold engine at 25 degress to start up
> and rev up that hi before oil is up at full oil pressure, is it normal or
> not it doesn't seem to rev that hi when the temps aren't so cold, is there
> any pcm updates that may help, runs fine otherwise.
>
> thanks for any info

As mentioned below, check the PCV valve and hose to and from it. As
Philthy mentioned, replace the PCV valve anyway, as they are about
$3.00CND. If this is the only time it revs like this, I am a bit
doubtful it is the PCV valve, but replace it anyway.
I do know that it is common for both my Neons to rev up a bit on
start, but 2k RPM sounds a little excessive.
Was the Van doing this last year, or did it just start?

Mike
mlawrenc(at)gmail.com


philthy wrote:
> make sure the pcv hose is not broke or cracked causing a vac leak that might
> give you a high start up idle and replace the pcv while you are at it so the
> engine does not sludge up also clean the throttle plate inb the throttle body
> enough carbon there can cause a high start up idle also
>
> Larry wrote:
>
> > Hi all in group, I'm just a little curios about start up on a 97 voyager 3.3
> > liter when cold, it rev's up over 2 grand for a few seconds on only cold
> > starts, It seems a little bad for a cold engine at 25 degress to start up
> > and rev up that hi before oil is up at full oil pressure, is it normal or
> > not it doesn't seem to rev that hi when the temps aren't so cold, is there
> > any pcm updates that may help, runs fine otherwise.
> >
> > thanks for any info