Car won't start in the cold weather, cranks fine, few clues inside?

Question

background info: 93 mazda mx6, high miles, fairly new fuel pump, new plugs, new wires, new disti, new disti cap.

hints: coolant reservoir looks almost empty, oil is low.
Everything electrical is fine, new battery clean terminals. Pump turns on with ignition, bright lights on dash. lots of crank.

Also, last week the car wouldn't start on hills, so i replaced the fuel filter and bam it started on a dime. But 3 days ago when i booted her up, it was idleing at 3000 rpm! The most i've ever seen in cold weather was 2000...when i drove that day, i noticed it was boggin down a bit when i was giving it more gas. The next day the temp dropped very far below freezing.

Could it be clogged fuel injectors or should i put antifreeze in the gas tank?
Or could it be the thermostat...pcm or egr? Also please explain in detail how to replace or clean parts per your suggestion...would help a lot :)

thanks

s

Answer 1

Get some de-freezer from a good gas station. Use as per instruction, it will work. Keep it preserved. Useful for future also.

Answer 2

These cars have an idle speed control valve that is electically operated by signals coming from your engine sensors. Chances are that at this mileage, the inside of this valve will have debris from oil engine vapors, and causes it to stick. Locate it and clean it thoroughly with Gum-out spray. Also check for open manifold vacuum hoses, especially around the PCV valve. You should be able to find this valve in the map on the decal under your hood. Also, shampoo the engine at a do-it-yourself car wash. Any weaknesses in the vacuum system should easily be found after the engine is clean. Don't use "dry" gas as a fuel additive for the gas. Sometimes the distillates in it will melt gas tanks or vapor lines or rubber components in the evaporator. Also, with fuel injection, you have a sensor that monitors air density. This is so that if you drive, for example, in the mountains, the fuel system will adjust itself to sparser air pressure. Sometimes this sensor can act up as well, giving a bad signal. Good Luck!!!

Answer 3

Don't put antifreeze in the gas tank! That's just nasty.

Lots of cars have a hard time starting when it's cold because the fuel won't vaporize enough. You can carry a can of ether ($2 at a car parts store) in your car and squirt that in the carb before starting, when you really need to.

Answer 4

Their is a solution for removing water from fuel lines at any auto parts store just ask them they will know what your talking about. Also top that oil with oil, and top your radiator with anti freeze as this can have a impact on performance as newer cars are designed to do this so they wont do more damage.

Answer 5

hi motor vehicle batteries are chemical units and temperature does consequence them so while one starts to get to the point yours has have been given to it's time to swap it. a motor vehicle battery has an entire life of roughly 3-5 years.