> wrote in message
oups.com...
> It's been doing this for about 7,000 to 10,000 miles now, but this is
> the worst it has been. My truck is a 1995 Nissan Hardbody with a 2.4L,
> 4-cylnder, manual transmission. (Just incase that helps.)
> What it's doing:
> In neutral and only in neutral the engine stops, uhh, working. The
> engine stalls. Now the strange part is it doesn't do this all the time.
> I have found no pattern including temperature and how long the engine
> has been running. The most annoying part is it never does this when
> other people are around. In more detail, the RPM drop signifigantly
> from idle (900)(average) to anything below that. Sometimes it will not
> shut all the way down, but always it always varies in rpm while idling.
> Itll fun fine for a few minutes then it slows down, but picks back up.
> Its making a puttering sound when the rpm drop and it definately sounds
> like the engine is having trouble staying on. This also does not matter
> wether the clutch is in or it is out of gear.
> The spark plugs and air filter are clean.
>
> Those pesty mechanics have screwed us twice. First time they said it
> was the EGR (something like that) valve, so they replaced that for a
> hefty price.Next time, most recently they said they couldnt detect
> anything wrong but they found a cracked alternator bolt which they felt
> like replacing. None of these worked in the long run.
>
> PLEASE if you can help or know of anyone that can help let them read
> this and any serious help will be appreciated.
>
> Thanks you guys.
> -Will
>
> P.S. If you need any other info, feel free to contact me.
>

The problem could be just a dirty throttle body, you could try cleaning it
and see if it makes a difference. It may also be a failing idle air control
motor. A decent mechanic with a scan tool should be able to figure it out.