We have a 87 suburban with the 5.7 back here in MISS, and she's running rough, she doesn't want to idle and when it does idle the RPM's constantly rise and fall, after fluctuating a few times it dies.
It also seems to be running rich, if I punch the gas in gear it might rev a little but if I let off the gas a little it will raise the RPM's to where they should be.
It seems to rev fine in neutral and park, the water pump was replaced 3 (?) years ago, and it has a coolant leak where the bottom hose on the radiator meets the block.
I'll add more info when I get to my computer (tonight)
Any input is appreciated
Edit: forgot to mention its fuel injected, and we replaced the injectors a few years ago