I have a 92 honda civic si that doesn't turn over.

1.)when I turn the key it doesn't do anything

Ive changed...
-fuel pump
-starter
-sparkplug, wires, and distrubutor cap
-feul injectors
-main relay
-battery


My car runs OK but I have to start it with a wire connected from the cylonoid and touch it to the positive battery terminal with the key in the ingnition and the lights in the dash on...

I'm thinking it might be the ICM but honestly I have no idea.. :confused:


It usually takes a couple of times for it to start but when it does it sounds weak but when the engine worms up it sounds normal and only take the first time to start


2.)I also think my civic is using more gas than it should I don't know miles I should get to a tank but I get about 250-270 miles a tank city/highway

Wish you had asked before changing all those..

I would first change the ignition switch. If nothing happens when you turn the key... wait.. does the engine turn over and not start... or does really NOTHING happen?

If when you connect a jumper lead between the positive battery terminal and the exposed “S” terminal on the solenoid and the starter motor operates, the problem is with the ignition switch, neutral start switch, or wiring.

Most likely, the ignition switch is bad. Here's how to easily replace it:

https://www.askmehelpdesk.com/cars-t...tml#post224652

Tips to Improve Gas Mileage:

1. Check for Diagnostic Trouble Codes.

2. Replace the oxygen sensor. A bad oxygen sensor can radically affect gas mileage, since it controls fuel injector duration. It's best to use the exact brand that came in the vehicle.

3. Go over the whole ignition system. Replace, for example, spark plugs (with exact brand and plug number that came in the vehicle), spark plug wires, rotor, and distributor cap. Replace platinum plugs at half the recommended mileage.

4. Replace air filter and fuel filter.

5. Check idle rpm and engine timing.

6. Replace the Engine Coolant Temperature (ECT) Sensor, which affects fuel injector pulse width. The ECT Sensor is a temperature dependent resistor (thermistor), whose resistance decreases as the engine coolant temperature increases. It provides a richer mixture when cold, leaner mixture when hot. They become corroded, due to not changing the coolant frequently enough, flood the engine, and waste a tremendous amount of fuel.

7. Check tire pressure.

8. Add Shell Regane or Chevron Techron fuel injector cleaner to gas tank every 6 months. This will clean fuel injectors, throttle body, valves, and combustion chamber.

9. Use full synthetic lubricants; e.g. engine oil, manual synchromesh transmission fluid, automatic transmission fluid, and differential fluid. This should increase gas mileage by 8 to 10%.

10. Check for dragging brakes, including emergency brake.

11. Check alignment.

Quote:

---

Originally Posted by StaticFX

Wish you had asked before changing all those..

I would first change the ignition switch. If nothing happens when you turn the key... wait.. does the engine turn over and not start... or does really NOTHING happen?

---

Thank man wish I would have found this website sooner

Did you replace the ignition switch?