162 000km. Engine 100%. Engine warning light comes on and S4 light flashes green Speedo stops working at the same time. Engine, gearbox and everything else seems O.K. Can you help with this ? Thanks Stan
SOURCE: Intermittent speedo for 1991 Honda accord but odometer & trip ok
its a faulty speed sensor or plug to speed sensor could be dirty
SOURCE: 1991 honda prelude 2.1 DOHC. Getting 9 flash's on
No. 1 CYLINDER POSITION (CYL SENSOR)
Try another known good distributor. The signal comes from inside the distributor.
SOURCE: I have an 89 honda prelude when engine warms up a
It sounds tempature related I would check the engine coolant tempature sensor Its going to be near the upper radiator hose where it attaches to the engine block a false reading from this sensor could screw up other systems abiblty to give correct readings to the vehicle control system and cause a lot of unasual unrelated problems to acure If you can i would seggest that you take it to an auto parts store most will read the codes for free although you have what is called an OBD 1 SYSTEM on board dianostic system OBD 11 is the newer system its likely a sensor and you will likely be able to fix it for under 50 dollars mabey 20 Good luck with it
SOURCE: When the engine is stopped the warning light STOP
This is most likely an oil sensor or oil pump going out. It could be the water pump but I would look at the oil pump if the level is good.
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