![]() ![]() In most cases, only an authorised mechanic will be able to carry out the repair and then use specialist diagnostic equipment to wipe the error code and stop the engine warning light appearing. To reset the engine warning light, first the issue will need to be fixed. The amber engine warning light is the most common of these warnings and is sometimes also referred to as the ‘check engine’ light or ‘engine management’ light. The warning is designed to alert you to a potential issue with your car as early as possible to prevent further damage to the engine or other related parts. Hybrid and electric cars also have similar warning lights. In most cars, a dashboard warning light is usually the first indication that something may be wrong in a petrol or diesel car. My car won’t start: why, what you can do and troubleshooting It’s usually an amber light that’s located in or around the instruments behind the steering wheel and appears when the car’s sensors detect a problem with your engine or another part of the running gear. My plan is to take the instrument cluster out and check the wiring from the connector on the instrument cluster to the connector on the expansion tank.Īny tips/ suggestions / info.If you’ve been unlucky enough to experience that horrible sinking feeling brought on by an unexpected engine warning light, you may be wondering what it means or what you need to do. May be capacitive is that again when I've put a multimeter across the terminals with the tank correctly filled it gives a very high resistance, typically 2MegOhms (the resistance on my old tank was approximately 6MegOhms). a printed ciruit board) or do you have to buy a complete instrument cluster from an internet auction site, scrappy or similar ?Ģ) Regarding the sensor within the expansion chamber is it a simple switch (as shown in the Haynes wiring manual ) or is it a capacitive sensor ? The reason that I think it So I'm guessing (assuming that I got a good expansion tank ), that I'm looking at either a fault within the instrument cluster or a wiring fault.ġ) Is the circuitry within the dash replaceable ( e.g. Well I replaced the expansion tank today and the coolant level light is still flashing after the ignition is on or engine has been running for a few minutes. I guess that I will have to change the expansion chamber as it looks as if the sensor is built into it.Īny pointers would be greatly appreciated. I can't find any details anywhere to tell me what the resistance should be.Ĭan anybody tell me, firstly if my fault diagnosis is right and what resistance I should be looking at ? I put a multimeter across the terminals and it is indicating open circuit with the expansion chamber correctly filled. I suspect it is the level sensor in the expansion chamber. ![]() There appears to be no problems with the head gasket because there are no bubbles coming into the expansion tank when reving the engine.Īlso I have put Vagcom on the car and there are no faults listed. When the car warms up the thermostat does operate because the top hose to the radiator does warm up. I have looked at the coolant level and it is correctly filled in the expansion chamber. The coolant temperature does warm up after a few minutes to approx 90 degrees on the guage and it does not overheat. The seller did warn me that the red coolant light was continually flashing, immediately after start up with the engine cold and at other times intermittently. I have just bought a 2002 1.0 ltr Polo for my daughter as a car to learn to drive in. This is my first visit to the Polo forum. ![]()
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