Honda Civic / Del Sol (1992 - 2000) EG/EH/EJ/EK/EM1 Discussion

93 Civic SI intermittent start issue

 
Old 06-30-2012, 09:50 PM
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Icon2 93 Civic SI intermittent start issue

Bone stock 93 si recent starting issue-

Sometimes starts fine, usually it wont crank - like its a weak battery, but battery tests fine, can start via popping the clutch/jumper cables, alternator tests fine, main engine relay/s fine, no CEL's when jumped ecu harness

After i pop the clutch to start when i go to start up 1 out of 5 times it will start right up.

Help!
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Old 06-30-2012, 09:58 PM
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Default Re: 93 Civic SI intermittent start issue

If jumper cables allow the starter to crank, then the battery is weak. What's the voltage across the battery posts?

Last edited by Former User; 06-30-2012 at 10:40 PM.
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Old 06-30-2012, 10:23 PM
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Default Re: 93 Civic SI intermittent start issue

Originally Posted by [email protected] View Post
If jumper cables allow the starter crank, then the battery is weak. What's the voltage across the battery posts?

12.73
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Old 06-30-2012, 10:39 PM
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Default Re: 93 Civic SI intermittent start issue

Have you cleaned and tightened the battery connectors, the G1 battery ground attached to the chassis, and the G3 transmission ground?
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Old 06-30-2012, 11:06 PM
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Default Re: 93 Civic SI intermittent start issue

Originally Posted by [email protected] View Post
Have you cleaned and tightened the battery connectors, the G1 battery ground attached to the chassis, and the G3 transmission ground?
yes, yes and yes & g1 & g3 make good ground
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Old 06-30-2012, 11:08 PM
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Default Re: 93 Civic SI intermittent start issue

When the starter won't crank, does the starter solenoid fail to receive battery voltage? If so, check the safety switch and rubber stopper it presses on at the top of the clutch pedal, as well as the ignition switch.
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Old 06-30-2012, 11:26 PM
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Default Re: 93 Civic SI intermittent start issue

Originally Posted by [email protected] View Post
When the starter won't crank, does the starter solenoid fail to receive battery voltage? If so, check the safety switch and rubber stopper it presses on at the top of the clutch pedal, as well as the ignition switch.
Not sure, the times i've tried to replicate the problem with my meter nearby i cant get it to happen. grrrr Carrying the meter around in the car till then. But I have checked the switch and rubber stopper - both ok.

It's not so much that it wont crank, when it happens its just a weak half crank


I appreciate the help, ill check the ignition switch tomorrow and post results.

Thanks again
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Old 06-30-2012, 11:31 PM
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Default Re: 93 Civic SI intermittent start issue

i can jumper from the battery to the ignition switch wire connection on the solenoid - if it works, it's not the solenoid, and its either the ignition switch or the clutch pedal switch. edit: or wire broken/loose somewhere


right?
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Old 07-01-2012, 07:17 AM
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Default Re: 93 Civic SI intermittent start issue

Here's the circuit, which involves a relay, so the problem also could be several different wires or the relay.

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Old 07-02-2012, 01:50 AM
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Default Re: 93 Civic SI intermittent start issue

where is the "starter cut relay" located? under leftside of dash?
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Old 07-02-2012, 06:15 AM
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Default Re: 93 Civic SI intermittent start issue

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