1996 Accord LX cranks longer than normal when cold. Idles at 2000 rpms then drops to 800 after it warms up... When you give it gas it dies, if it doesn't die then runs smooth throughout the rpm range. No CEL. Here is what I have replaced:

EGR valve--seemed funny the one I replaced had more "range" on it
Plugs,
Cap
plug wires
changed intake temperature sensor(one computer reads info off of)
Injector w/ rail--test fuel pressure--around 34 psi and 40 at full throttle--gauge leaked a little so could be a little higher maybe
cleaned egr ports
replace idle air control valve--both electronic and other on throttle body
changed throttle body w/ one of a known good car
checked timing
cleaned intake w/ carb spray
check for vacuum leaks--idle doesn't change w/ carb spray
changed ecu's w/ one from 97 accord--does exact same thing

I am completely out of ideas........... so frustrated... read every possible post on matter... only thing I haven't tried from what I have read is checking valve clearances but car runs good through rest of range. Took to honda dealer they said iacv and started there... then said temp sensor so did that... also noticed when dies a puff of white smoke comes out intake that smells like fuel but plugs are not wet

 

Does the check engine light ever turn on while driving?

When the engine is cold, check the coolant level by removing the radiator cap. The coolant should be all the way to the top of the cap.

You could also have air in your coolant system. There is an air bleeder valve on the thermostat housing that you use when you are filling up the radiator.

 

Im thinking along the same lines as PAHonda on that air in the coolant circle.
Let us know if that was your problem.

WheelBrokerAng

 

coolant is full... system bled, also replaced distributor--no change at all?

 

did a compression check 175 psi in all 4 cylinders...

 

It was distributor!