So i recently put a new transmission in my jetta, and the mechanic says i need to also change the water cooling flange, i opted to change it myself. so i did and it was broken inside the hose no problem. when i put everything back together the fans would not kick on and the engine would start to overheat. pleanty of fluid, things worked b4, a little coolant trikles through but not nearly enough. i thought maybe some sort of vapor lock or electrical issue, just nothing concrete. any ideas out there?
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1. Just for fun and giggles, it might be a good idea to have the thermostat checked one more time. I know it is a new thermostat but you never known if a thermostat may have failed even right out of the box. It is possible that thermostat could be shot, even thought it was new. I know it is a long-shot, but it never hurts to give it a try.
2. Check the fan sensors. The Eclipse has used an electric, rather than mechanical, fan for some time. It is possible over time that the start and stop sensors can go out of tune and that they can raise your fan's run rate on starting, cruising and idling. In this case, the mechanic is right in that the higher speed is causing the coolant to be cooled off more quickly than it should and the result is that your vehicle's cooling system is causing problems for your Eclipse's heater sensors. If the sensors don't get information that the coolant flowing through their portion of the cooling system isn't the right temperature then the heater won't kick off and all that will happen is that the heater will wait until it senses the coolant is the right temperature.
My 06 Dodge Stratus did this same thing after I had my transmission replaced. I thought the guys at the shop did it but come to find out the actuator that controls the knobs and the turning of the fans for heat and cool air had popped off of the turning mechanism. My uncle took out the glove box so he could access the back of the heater/ac panel. There should be a round mechanism that will spin back and forth when turning the knobs from cool to hot and 1-4 for wind speed control. On top of that know are small notches that hold a white, possibly grey "hook" style device that holds the turning mechanism in place once you change the settings from hot to cold or between 1-4 of the wind speed control. The "hook" style device may be stuck. Try prying the device off of the turning mechanism and getting it in to another one of the grooves on the mechanism. If you can get it to move you should be able to get it unjammed.
so u pretty much replaced everything there is that could be the problem,fans turn on right??pump is working right??thermo is new right??ok so during the process of changing every thing you could have trapped air pockets in the cooling system ive seen this numerous times you can start there its the cheapest start,1st remove the radiator cap,2nd turn heater on high setting and temp to heat max, 3rd start ur car let the system cycle thermo has to open and close at least 2x's water is going to overflow to the ground its ok just dont lketr it empty youll see bubbles like air comming out let it run like 15min like this,turn the car off let it cool then place the cap back on make sure the seal is ok on radiator cao too!!hopefully thats all u need if not u may need a head gasket repaired they sell a green liquid at kragen oriely for blown head gaskets its like 25.00 it works pretty good for about 6000 miles to 10,000 miles MAKE SURE IF U USE IT FOLLOW ALL DIRECTIONS!! GOOD LUCK
actually, mk3 vw's with auto transmissions cant just be topped off. you have to have it done by a certified tech, or if your mechanically inclined, you can buy a kit to do it. but, the problem is, there are magnetic shavings inside and when you flush it, you may or may not flush them with it, which in turn could be worse.
sounds like your water pump is air bound ( there is a air bubble in your cooling system,or your water pump isn't turning.Bleed the cooling system by jacking car upso the antifreeze fill area is the highest point and run the engineat 1500 rpms add water if it goes down that tell you that the water pump is pulling.Also see if you have a air bleed on the cooling system.Keep the rpms up until you can't add anymore water then put cap back on before returning the engine to normal idle speed.
check to make sure battery in good conditions.the battery voltage should be 12.5.if all is good.problem is in starter solenoid.if it wont replace with the new starter.also bad battery cables.replace battery cables if they havent been changed.a bad transmission range switch.
Sounds like the battery is almost dead, try boosting it with another car or a good battery you may also jump start it if its a standard. If the battery is not dead and your 100% sure of that then I'd say the starter is burned out in which case you have to change the starter.
Well, I would replace the air filter, make sure the air hose from the air filter to the intake is not kinked or blocked and check for vacuum leaks. If these are all fine, I would check the fuel pressure as it is possible the pump is weak and not supplying enough fuel.