Car in question 1999 accord, l4, auto.
When idling expecially in traffic temperature rises high, but when the throttle is applied and engines runs from 2000 rpm upward temperature goes down to normal. Fans works with termostat. and runs well. Any clue with wats next to do?

rainmaker12:
Car in question 1999 accord, l4, auto.
When idling expecially in traffic temperature rises high, but when the throttle is applied and engines runs from 2000 rpm upward temperature goes down to normal. Fans works with termostat. and runs well. Any clue with wats next to do?

How often do you top up your coolant or water in your radiator? Have you performed a coolant pressure test?

First, make sure ur radiator is ok

Second, cheak the speed of the fan when idle

Third, check if u have coolant or water in ur radiator.

If all these are ok, then see a mechanic asap.

rainmaker12:
Car in question 1999 accord, l4, auto.
When idling especially in traffic temperature rises high, but when the throttle is applied and engines runs from 2000 rpm upward temperature goes down to normal. Fans works with thermostat. and runs well. Any clue with whats next to do?

Take a look at your radiator veins. I believe it must have been covered with dust and debris thereby allowing minimal air to flow through and effect its cooling. So, the radiator now only cools when opposing air is forced into it through the dirt on it while the car is on forward motion,

Go to a car wash and let them use their pressure washer on your radiator. or have a mech take out the radiator and have it pressure washed.


Cheers

rainmaker12:
Car in question 1999 accord, l4, auto.
When idling expecially in traffic temperature rises high, but when the throttle is applied and engines runs from 2000 rpm upward temperature goes down to normal. Fans works with termostat. and runs well. Any clue with wats next to do?

Faulty waterpump.