Question about 1997 Nissan Maxima
Check if the leak is from the hose, it could be a loose clamp or bad hose. It could also be a bad water pump that needs replacement. An engine wash is good for you to trace the leak correctly. If you have the chance, get a scanner connected to the car. Some shops would let you borrow their scanner to check if there are errors. If you have issues with the actual idle it may also be caused by low coolant levels or an IAC valve that just needs cleaning or may be faulty. If the idle is good and its just the gauge then check its cables for loose wires or grounded one. You may also have a gauge that may have gone bad.
Posted on May 29, 2011
The radiator coolant leak needs to be addressed FIRST. Low engine coolant can not only affect your idle speed, but it can cause serious engine damage. If coolant is dripping off of your power steering pump, the most likely problem is a bad water pump. The 3.0L V-6 engine in your car requires that the TIMING CHAIN be loosened and secured to replace the water pump. This is not an easy job and requires some special equipment.
If you still have idle speed problems after your water pump has been replaced and the coolant level is correct, then you should first check for vacuum leaks. If you don't find any leaks, then I recommend diagnosing your idle control system using the appropriate scanning equipment.
Posted on May 29, 2011
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Posted on Jan 02, 2017
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