Above all, engine no start conditions, can be very frustrating.
But, you need to narrow down, the conditions, you are actually having.
So, before your engine would not start, did you notice anything, out of the ordinary? Loss of battery power or a check engine light?
Consequently, this could aid, in the troubleshooting and diagnosis of, engine no start conditions. So, ask yourself a few questions, that may lead you in the right direction.
The first thing is, does the engine even turn over, when you try to start it?
- Because, when the engine is not turning over, a simple item, such as a low battery, can fix the problem.
But, if your engine, does turn over and still will not start, things start to get complicated.
Consequently, an engine needs three things to run, compression, fuel and spark. Because the engine depends on, supporting systems to make these things happen; such as the fuel and ignition systems, a simple item; such as a fuel pump relay, will make the engine not run.
Possible Causes And Things To Check, For Engine No Start Conditions Include:
- Check the Security System
- Test Fuses
- Check for Spark
- Check for Fuel
- Engine Trouble Codes
- Crankshaft Angle Sensor
- Check for Injector Pulse
- Check Cylinder Compression
- Plugged Exhaust System
Less Common Areas To Check, For Engine No Start Conditions Include:
So, there a few subsequent conditions, which are more difficult to detect; that could also cause no start conditions:
- Water, in the fuel tank
- Electrical system wiring harness failure
- Computer malfunction
Engine No Start Conditions, Because Of, Neutral Safety Switch
So, vehicles equipped with automatic transmissions, are designed with a neutral safety switch. Consequently, stopping the engine from turning over, if the gear selector is not in park or neutral. For standard transmissions the switch is designed to detect, if the clutch pedal is fully depressed. This safety feature will not allow the engine to start, while the transmission is in gear.
Both of these switches, are subject to wear and can become; misadjusted or have an open circuit, due to time and usage. For automatic transmission vehicles move the gear shifter, to the neutral position and recheck the operation. If the starter then works, the neutral safety switch has gone bad and needs, adjustment or replacement.
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