Slip into Neutral (on purpose?) at highway speed takes load off engine
and RPMs shoot up: condition sounds normal
Start cold, high RPM tapering down to 1K in 10 seconds; close to normal,
but Idle Control Valve may need replacing.
I discovered this by trying to isolate a vibration problem at high
speeds...And my foot is not on the gas.....for some reason when the vehicle
is doing 75mph the computer is telling it to keep the rpms up....this
doesn't seem normal to me...
It's normal. I won't explain the details, but it has to do with the PCM
strategy. The PCM doesn't expect to see ~60-80 MPH with the trans in neutral. It
the RPM way up to lessen the chance of damage if the transmission is re-engaged
that speed. Basically, Don't Do That!!! The PCM can only provide SO much
from stupid abuse like that. If that was a 70s car, either the trans would come
when re-engaged or the engine would overspeed. Why in hell would you put the
neutral at 75mph and then re-engage it??
If you are doing stupid stuff like this to find a vibration, you really need
the vehicle to someone who knows what they are doing before you cost yourself a
To me this seems like a dumb design because the car seems to not slow down
as all my other cars have when you take your foot off the gas when the car
is in drive....to me it seems like I always have to have my foot on the
brake to slow the thing down.
Thanks for your imput...Even though you seem to be making me out to be a
Not intending to make you out to be a moron. Just don't do that and send me
I've got a daughter starting college in the Fall ;)
Seriously, going into neutral and back into drive can damage the
just not a good idea. Like Rob said, that car rolls very easily and loses speed
when you take your foot off of the gas. I noticed that right away going from a
to a 98 Taurus. It's nothing to worry about.
Motorsforum.com is a website by car enthusiasts for car enthusiasts. It is not affiliated with any of the car or spare part manufacturers or car dealers discussed here.
All logos and trade names are the property of their respective owners.