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RE: Ask the Car Guy @socky Nov 5
I haven't worked on one of those, but if it has wheels, I can usually fix it.
What is the trouble?
I haven't worked on one of those, but if it has wheels, I can usually fix it.
What is the trouble?
It won't start engine when temperature is under 0 degree.
What year, What engine type? Have you had the computer codes checked? Is it a diesel or gas engine? Does it not start right away but starts with several tries? Does it sound like the motor is struggling to start (slow)?
2002,1.2 gas engine.Codes are ok,it starts after 3-6 tryes.The motor starts to crank,then it stops for a second,then starts again....i changed this parts:computer,gas pump,all spark plugs,map sensor,lambda sensor,car battery,i changed almost every part on car engine.Car has been to 4 different car repair shops,and one car electric.No one can find the problem,and fix it.
When a car is cold, the fluids in the engine will thicken up and cause the engine to work harder. The combustion chamber is cold and inhibits combustion. The fuel will not want to vaporize and mix thoroughly with the air as it enters the engine. The battery must go through a chemical reaction to produce electrical current. The extreme cold reduces the battery performance. Combine these things and the car will have difficulty to start. Any one of these things not functioning well can cause the problem starting.
Since you said that the motor tries and then stops and starts again, it sounds like the electrical system is not providing enough energy to spin the motor fast enough. This is almost always caused by the battery connectors. The battery has acid inside it. Tiny amounts of that acid leak out and get on the parts around the battery and start corrosion. Corrosion on the battery connectors creates resistance to the flow of electricity. Combine that with cold temperatures when the battery is not performing and you will have cold starting problems. The connection to the battery should be completely clean and free of corrosion. The connector needs to have a gap where the bolt tightens it. If it is bottomed out, then it may not be getting tight enough. If this is the case, you will need to replace the battery connectors or get a spacer to go inside the clamp. The battery cable at the starter may be corroded as well or the starter may be faulty. The starter will have a contactor inside it to switch the high current to power the starter motor. That contact could be corroded or burnt which limits how much power is delivered to the starter motor.
The battery cables are the easiest thing to fix after the battery. Since you have replaced the battery, inspect those cables and connections. If they cannot be completely cleaned, replace them. Make sure you put some oil or grease on the connection to help prevent corrosion.
Thanx for info.But i replaced car battery and electric car starter,nothing works. :/