red99tegra

97 honda civic non vtec
my car doesnt want to start once in a while, i pulled off the cap and rotor to test the ignition coil... specs are 0.63-0.77 I am getting .9 for the primary winding and the secondary winding is within spec dont remember exactly what it was.. would that little bit of difference cause a problem??

Former User

Is there bright white spark at all 4 spark plugs?

Click the spark link in my signature. Did you subtract the internal resistance of your multimeter?

red99tegra

my dmm's resistance is .2 so i guess im within spec for the coil resistance

red99tegra

im going to put it back together and check each plug

red99tegra

put everything back together and it started. Looks like its a morning problem? could it being cold affect certain part of the ignition??

red99tegra

can the icm/igniter be working on and off?

red99tegra

ok, so ive been messing with it for a while, i have spark... what i dont have is ground signal at the injectors??
my fuel pump wasnt priming so i bypassed the relay (fused with a switch) so i have fuel pressure. If i touch ground to each injector they will click open and car will start but wont start back up after i turn it off

any ideas??

HondaPartsHero

Sounds more like main relay
http://techauto.awardspace.com/mainrelay.html

red99tegra

i had switched in a new main relay and same thing... took it back

red99tegra

i put the main relay back how it was (not bypassed) and the turn the key to on.. anywhere from 30 seconds to a minute or 2and it clicks and starts to prime the fuel pump? sounds like the main relay is bad, but when i had put in a new one it wasnt doing anything??? what else could affect it.. already cleaned ground g101 or somthing like that (thermostate ground)

Former User

Might be a bad ECU.