weird idle

[sman6452]

I have a 1990 accord coupe with no modifications. When I stop at a light or anywhere for that matter, the engine speed comes down very low. Sometimes down to 300rpm. After a few seconds, the idle comes back up to normal 750 rpm. This happens every time I lift my foot of the accelerator and let the rpm's drop. My car is manual.

I cleaned out the egr passage in the intake manifold but the problem is still there.

Any thoughts on this subject would be appreciated.

[pimpinprelude]

sounds like pcv valve hose....

[sman6452]

Would anyone have a diagram of where the pcv valve and pcv valve hose are located?

[ebpda9]

they go from somewhere in the middle of the valve cover to the air plenum.

[pimpinprelude]

yea its the hose that comes out of the valve cover right abouve where it says "16" on the valve cover... lol i hope that works... but thats where i remember it being in your car... you do have the 16 valve engine rite???