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2007-04-11 14:33:55
2007-04-11 14:33:55

Engine is running slower at idle, therefore water pump is running slower and water is being circulated at a slower speed and there is no air flow through the grill to the radiator Try flushing the coolant and replacing the thermostat. This usually helps or solves the problem. If it doesnt then your radiator is prbably clogged and not properly dispersing fluid through it. You will most likely have to change the radiator. It is possibly the coolant temp sensor is not quite right. It could just be several things. Try the flusing first. Good luck.


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In park or neutral, no.

Its prob the radiator fan. Or you are out of coolant.

It could be a bad fan clutch. If the fan clutch goes bad it could cause it to overheat while idling, but it would cool off when driving due to the wind going over the radiator.

The radiator cooling fan is most likely not working.

You need to check the operation of the radiator fan.

Rough idling is whenever the vehicle's motor "misses" or does not fire causing an imbalance and a loss of rotation reducing the motor's power and causing excessive shaking.

This fluctuation is caused by common use. The temperature will be higher when the vehicle is idling because there is no air moving over the engine like it does when the car is in motion.

Check coolant level Cooling fan working? Dirt or clogged radiator? Defective radiator cap?

try checking your cooloing fan. make sure it is running There is no air getting to your radiator as you are not moving! Or there is a problem elsewhere in your cooling system!

A bad fan clutch, low on coolant, missing fan shroud, bad thermostat or a plugged up radiator.

Engine temperature rising when the engine is idling is normal. The car is sitting still and no air is entering the engine compartment. This will cause the engine temperature to rise. The cooling fans then come on and the engine returns to a normal temperature. Unless the cooling fans do not bring the temperature down, you have no problems and this is totally normal.

You need to check your cooling fans and be sure that they come on at 232-235 degrees. They should shut off at 195-200 degrees.

a dirty air filter or a dirty fuel filter will cause a diesel to smoke

BAd radiator cap, low coolant or (leaking), Bad thermostat, cooling fans not turning on.

Check your thermostat, it is either stuck open or not in the engine.

My guess would be to look at the motor mounts to see if they are loose or broken.

My 1986 Honda Accord Dx just started idling rough and dieing at turns and stops it is a carburated 2.0 witha maunal transmission

you most likely have a horrible fuel sensory causing your car to be bad at idling. also you may hvae reved your engine to hard and that is causing it to idle.

You are not giving enough information to get a reasonable answer. It's like asking why it won't start. Any, and I mean any, detail would help. Are we talking about the engine cooling system? What are the symptoms that bring you to the conclusion it is overheating? Have you checked the coolant level? What year and size engine? Does it overheat only when stressing the engine, like climbing hills? Does it overheat only in traffic and okay on the highway? Does it overheat when the car is idling? Has the head gasket ever been replaced?

A bad coolant temperature sensor is one thing that could cause an idling speed problem with a Peugeot 406. There could also be a problem with the idle control valve.

It can, but you should trust the computer diagnostics in a situation like that.

Because the efficiency of the fan and the water pump degrades at low RPM.

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