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MARIBEL1 · Mar 21, 2009, 08:21 PM

I have a 93 honda civic ex and it is not starting. I have replaced many parts: starter, distributor, main relay, spark plugs and wires and still no start, but it was an intermitten problem until one day it statred raining for an entire day. I went to stater the car and the fuel pump did't come on. What could this be?

TxGreaseMonkey · Mar 22, 2009, 05:52 AM

. Test all underhood and underdash fuses with a test light or multimeter:

https://www.askmehelpdesk.com/cars-t...tml#post252145

Be very thorough, since it can save a lot of time and money.

. Clean the main ECM ground on the thermostat housing.

. Perform the K-Test on the ECM:

The K-Test: Remove the MAP Sensor connector and turn the ignition switch to ON (not start). Using a multimeter, check for 5 volts going between the MAP Sensor connector's reference wire (+) and ground. As you look at the connector, this is the socket on the right. Really press the black test lead into a cleaned main ECM ground on the thermostat housing. If the voltage is low, it's probably indicating ECM failure. Most failed ECMs will record a fraction of a volt. To me, the K-Test is simple, elegant, and accurate.