I'm still trying to troubleshoot why my '95 LS is difficult to start about one hour after driving it. I have to crank it for a long time and/or give it gas (when I give it gas it seems to crank faster) for it to start. Once the car starts it runs great. I'm wondering if it could be a faulty Ignition Coil. The resistance measures fine but I've heard coils can be bad even when they measure within spec. This is what I have checked so far:

# Replaced main fuel relay
# Replaced fuel filter
# Replaced purge control solenoid and filter
# Checked fuses (none are blown)
# Battery voltage is ~12.4 sitting and ~14.4 running
# Idle is perfectly 750RPM at normal operating temperature (no surging, fluctuations, lag, etc)
# Replaced spark plugs, distributor cap, and rotor
# Spark plug wires have ~30,000 miles on them
# Entire distributor assembly was replaced ~12,000 miles ago
# Cleaned battery terminals, clamps, and grounds (chassis, valve cover, radiator)
# Timing was set to stock 11 months ago
# Spark plug wires measure below 1300ohms impedance
# Coil measured 0.8 and 18.2k impedance (within the acceptable range)
# Replaced ICM (Ignitor)
# Replaced ECU

Modified by AdamJ2 at 10:37 PM 6/26/2008


Modified by AdamJ2 at 6:14 AM 6/27/2008