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Re: 2001 Pontiac Sunfire overheats and more
1-is rad.fan coming on at idle before it starts to overheat?2-assuming its your heater blower fan its the fan contrl mod.located near the blower motor.3-is reservoir located in fender,if so remove plastic inner wheel fender toremove it.4-scan cars ecm for trouble code,it could be related to heating prob.ex.eng. coolant sensor wich starts rad. fan or another component for eng. performance.
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If engine sizes are correct match for each vehicle engine swap wont be a problem u can possibly even drop the unibody of cars and swap depending on engine sizes match just unplug everything 8 bolt lift body pull unibody out get new rubber underneith for body support everything is manageble
maybe your security system monitors engine temp ... it doesnt have to be the thermastat thats bad .. it could be the radiator fan switch or relay bad .. you can tell which by the following. 1. if it overheats only when idling or in heavy traffic but does not overheat while on the road (moving) then your problem is more likely the radiator fan switch, relay or fan motor .. 2. if your car overheats all the time even while driving then it could be the thermostat ..
check belts, coolent level and radiator clogging ..
Common causes include: leak from engine, hoses, etc. causing overheat due to low coolant, electric fan not coming on, internally obstructed radiator, external obstruction to radiator (leaves paper. plastic bag on front of radiator of stuck between radiator and A/C condenser), bad thermostat and last, blown head gasket. Proper testing for any and all these conditions will give you the answer you are looking for. If the antifreeze is overflowing without any overheat, it can either be over-full, or in some cases, a head gasket can do this by filling the cooling system with exhaust and driving the coolant out.
Are you certain that the engine is getting fuel? If not, then you will have to verify that there isn't any blockage in the fuel system to prevent the fuel from reaching the engine. If fuel is reaching the engine, try the following
1. Check compression values for each cylinder.
2. Inspect electrical circuitry in the distributor assembly (slack wires, broken wires, dmaged rotor etc)
3. Check to see if the timing belt was not severed. This belt transmits the drive from the crankshaft to the camshaft. If the belt ius severed, the camshaft cannot rotate in order to open the valves