What does the diesel engine pre glow warning light mean?
A faulty timer may keep the plugs on for too long, wearing them out, or even not turn the plugs on at all. If a fault has been detected, the computer will save a code in its memory to help diagnose the issue. Have a certified technician hook up a scan tool to your car to read this code. Is it safe to drive with the diesel engine pre-glow light on?
Why is my pre glow warning light not working?
If a new glow plug doesn’t remedy the problem, take a look at other parts of the circuit, mainly the timer. The timer’s job is to turn the plugs off once the correct temperature has been reached. A faulty timer may keep the plugs on for too long, wearing them out, or even not turn the plugs on at all.
When to replace glow plugs on diesel engine?
Typically, this light flashes only when an issue has been detected. The most common reason to replace glow plugs is age. Over time, after repeated warm up cycles, the glow plugs age and are not able to produce any heat. Replacing any malfunctioning glow plugs should get rid of any issues you are having.
When does the glow plug indicator light come on?
The system typically makes the driver wait around 10 seconds while the plugs warm up the engine. Once the correct temperature has been achieved, the computer will then let the driver start the engine. Normally, the glow plug indicator light will come on only when the engine is cold.
Where to check for glow plug relay failure?
BUT before you panic be sure to check the strip fuse inside the relay top cover. You cannot believe how many fuses Kent has sent with very fine hair-line cracks. They are not evern burnt so it is hard to see the failure. We also have manuals available to help you troubleshoot your glow plug related problems.
Why is my glow plug not working properly?
It is usually caused by a failure inside the relay. When this happens, you may also notice your battery is not able to charge properly due to the high current drain on your electrical system. To check for this condition, start the engine and after a minute of running test the glow plug circuit with a meter or 12 volt test light.
Is the glow plug on a diesel engine reliable?
Kent has often said that the glow plug is the achilles heal of the diesel engine. The engines are very reliable, but if the glow plugs or the pre-glow circuit fails, you will be stranded. Most quality glow plugs are very reliable and some will last for years without needing replacement.