2003 s40 w/ 110000

1) CEL on, code indicates to change thermo. Noticed coolant was foul color and low, going to go ahead and flush system. Any instruction/tips on proper procedure, also what coolant is best to use.

2) After starting in morning while car is warming I can hear a rhythmic chirp on the passenger side of engine. Could this be drive belt, timing belt pulley???

3) Getting ready to to complete 105000 advised service anything special other than the norm to attend to

Thanks for any feed back

 

1. Aby coolant is fine.
2. Mine be the timing belt tensioner or idler.
3.Has the timing belt been replaced?

 

Replace the timing belt, timing belt tensioner and water pump at the same time for the 105k mile service. (Don't forget the cabin air filter too, sucks when a clogged filter takes out the blower motor resistor) If you have an auto and do it yourself you will need to make the special tool to hold the crank from moving to get the nut off the crank since you cannot get to the flywheel. I had to use a little heat on the crank nut and use my legs to get enough torque on the nut. If you have a manual maybe it will be easier. The longest, hardest part is that stupid nut. Everything else is pretty straight forward and fairly quick. The only other issue was making sure the cams did not move when placing the timing belt on all the different cogs. If they move just move them back so the marks line up on the timing cover and all will be well.

 

What is proper procedure for flushing coolant?

 

make sure you have the car jacked properly. You then should loosen the drain **** which on the bottom right of the radiator. Make sure the engine is cold while doing this. Let the coolant come out of the drain into a pan. Once it has stopped coming out completely, go to the left side of the radiator and unhook the lower radiator hose. Let the coolant flush out of this into a pan as well. then make sure you have the drain **** and the lower radiator hose fastened back on. Turn the car on and crank the heat up to high, let the car run to normal running temperature, at the same time take distilled water and pour it into the coolant reservoir/overflo. Make sure you put around a half gallon give or take. ONce the car is up to proper normal running temperature loosen the drain **** once again and let it come out. this is to let the distilled water flush the remnants of the old coolant out. Once theres no anti freeze left in the water thats coming out go to the lower radiator hose and let that all come out. (you will have to bend the hose in order to have it completely drain). Once this is done. Tighten everything back up and start pouring your coolant into the reservoir/overflo-located back by the firewall on the top passenger side. Let it run to normal running temperature. Some of the coolant should leave the reservoir, make sure you fill it to the line after its been running. Some important things to know after just doing this not to long ago, the drain **** has an o-ring on it, don't remove the drain **** all the way, but if you do make sure the oring doesnt come loose, otherwise whatever you put in there will come right out the overflo nipple located under the drain. If you're using premixed coolant, 2 gallons should be abundant, plus you will need 1 gallon of distilled water. Don't think I'm forgetting anything, if you have any questions let me know.

 

also forgot, to get to the bottom of the radiator you will have to unscrew the plastic cover on the bottom of the car. when explaining this to you, you should be under the car, the radiator in front of you with your feet pointing towards the front direction of the car.