Gurus out there? Crank, won't start - obvious has been done
 

'95 Honda Civic DX, 142K mi

Cranks but will not start, only when cold (< 50F). Repeatable problem. Car runs perfect once it starts.

Tests done when not starting:
Spark is OK.
Fuel pressure on FI rail is OK.
5V on MAP sensor.
Main relay clicks good, fuel pump hums nicely.

Work I've already done:
New ignition coil
New igniter module
New fuel filter
New battery
Resoldered main relay connections
Cleaned ground connection on thermostat housing

Once it warms up in the afternoon, car starts immediately. Never stalls -- runs great. Dead as a door nail the next morning, if cold. No CEL, no diagnostic codes found.

Any help is appreciated!

RE: Gurus out there? Crank, won't start - obvious has been done
 

I'm no Guru, but you might want to check the Fast Idle Valve:

http://img218.imageshack.us/img218/8...ure0333tg5.jpg

RE: Gurus out there? Crank, won't start - obvious has been done
 

Thanks for posting that -- I'll check it out!

RE: Gurus out there? Crank, won't start - obvious has been done
 

+1 to the fast idle valve "(IACV)"

also you could test out the coolant temp sensor...

RE: Gurus out there? Crank, won't start - obvious has been done
 

Iknow you say spark is o.k but check out the cap and rotor for carbon pile up and cold enough temps it could be enough resistance not to start