No, it wouldn't affect the idle unless you were somehow overheating the engine.
With key on engine off 23-31 psiWith engine idling 13-20 psi
We have a 2000 Villager which blows cooler air while idling, and then warms up when the engine speed increases. I talked to our mechanic and he thinks the cooling system may need to be flushed - the heat comes from warm engine coolant circulating through the heater core. If the cooling system is flushed and the passage ways in the heater core are reopened allowing warm coolant to flow freely, that may solve our problem. I'll have this done, and do a second post with the results.
water pump
Hopefully you got the timing marks lined up? What else did you add? Plugs? Were they gapped properly? Wires? Are they on tight? What exactly is "other things"?
Its prob the radiator fan. Or you are out of coolant.
Effectively all the fuel that it burns while idling. You are getting 0 miles per gallon while idling.
Yes, "sparkling plugs" is definitely detrimental to idling or smooth running of an engine
Check your vacum lines. The rubber and plastic hoses under the hood. If one is loose and leaking, it will cause a miss. If it only does it at idle, it will probably be a small line or just loose. that's the first and cheapest thing to do.
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.
When a vehicle is idling, the engine may not produce enough heat to warm the coolant effectively, leading to cold air from the heater. In contrast, while driving, the engine works harder and generates more heat, allowing the heater to blow warm air. The engine temperature can rise while idling due to reduced airflow through the radiator and less coolant circulation, while driving increases airflow and coolant flow, helping to cool the engine.
Low coolant level? Cooling fan not working? Thermostat not opening fully? Water pump not circulating coolant? Plugged or restricted radiator? Defective radiator cap?
I had the same problem on my car. turned out to be a blown head gasket. the no. 1 cylinder was pushing hot gasses into the coolant jacket.