hi, i was just wondering if anyone know what rpm my truck is supposed to run at when idleing. It is usually at 600-700 and that seems a bit low. If you know could you let me know what yours runs at. Thanks.

My 4.7L idles at about 500-600 RPMS

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I've got a 4.7l and mine is about the same.

ok, mine is the 3.9. But is seems to be a bit rough at idle. Maybe just because it is starting to get cold out. But thanks for the replies.

If its starting to run a little rough you could get a tune up. That should help it out.

I'm wondering if that is the normal 3.9L idle. I thought mine was a litlte rough, so I installed new distributor cap, rotor, spark plugs and plug wires last week (in addition to a new air filter a few days prior to that). It smoothed it out a little, but it still feels a little rough. I dunno if that's normal or if the timing needs to be adjusted.

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Nick
www.carboneracing.com
1995 Dodge Neon sedan - 16.2 @ 87
1988 Dodge Grand Caravan - 17.6 @76
1995 Dodge Neon sedan - gutted and loud
2003 Dodge Dakota club cab - global warmer
1998 Dodge Neon sedan - sister's car

ya maybe it is because i just installed new plugs and a new air filterlast week and it helped a bit but it still seems to be a bit rough.

How many miles on yours? I got just about 39xxx.

__________________
Nick
www.carboneracing.com
1995 Dodge Neon sedan - 16.2 @ 87
1988 Dodge Grand Caravan - 17.6 @76
1995 Dodge Neon sedan - gutted and loud
2003 Dodge Dakota club cab - global warmer
1998 Dodge Neon sedan - sister's car

mine has 130,000 km. So what is that? something like 70,000 miles.

i noticed my idle went down about a 100 or so after i installed cold air to it.