Tilted Forum Project Discussion Community - View Single Post

Sion · 08-18-2003, 02:01 AM

mg, replace the ignition coil and have the ignition module checked. take the module to a parts store and have them test it. be sure to ask them to run the test about 8 or 10 times, so that it gets warm (if not actually hot). if it passes every test, it should be ok. or you could drive the car to the parts store and let it run in the parking lot until it dies. then immediately remove the module and coil and have them tested while hot. I can almost guarantee that your coil is bad, and since its a relatively cheap item, Id go ahead and replace it.

"Hot batteries (they get hot by flowing current) do not provide as much power as cold batteries. Could be when the battery gets hot its output drops below that required for good spark."

first of all, the battery does NOT supply current for ignition spark when the engine is running. the battery has one job, and one job only: to supply current to get the engine running. that is all that it does. after the engine starts, the ALTERNATOR provides ALL electrical current, and the battery is merely a passenger from then on. In fact, you can remove a battery from a running vehicle and it will continue running. (NOTE: this is NOT a good idea to do this on todays computer controlled vehicles. It can theoretically cause a voltage spike that can fry some engine control components (like the computer, for ex) which can be expensive to replace.) This technique used to be the backyard mechanics easiest way to test for a bad/weak alternator. Disconnect the positive cable from the battery and if the car dies immediately, you would then know the alternator wasnt working right or at all.

In any case, while a bad/weak battery can obviously prevent a vehicle from starting, it cannot cause the engine to die.

secondly, a hot battery has less power than a cold one??????? that must be why cars start SOOOO much easier in the winter, huh? dont believe me? look at a battery (any battery) and you will see that it carries TWO power ratings: cranking amps and COLD cranking amps. cranking amps (at 32 degrees F) are always higher than cold cranking amps (at 0 degrees F).

oh, and batteries do not get hot from flowing current. they can and often do get hot while recieving current (during charging) but not from supplying current.

08-18-2003, 02:01 AM	#7 (permalink)
Sion Dumb all over...a little ugly on the side Location: In the room where the giant fire puffer works, and the torture never stops.	mg, replace the ignition coil and have the ignition module checked. take the module to a parts store and have them test it. be sure to ask them to run the test about 8 or 10 times, so that it gets warm (if not actually hot). if it passes every test, it should be ok. or you could drive the car to the parts store and let it run in the parking lot until it dies. then immediately remove the module and coil and have them tested while hot. I can almost guarantee that your coil is bad, and since its a relatively cheap item, Id go ahead and replace it. "Hot batteries (they get hot by flowing current) do not provide as much power as cold batteries. Could be when the battery gets hot its output drops below that required for good spark." first of all, the battery does NOT supply current for ignition spark when the engine is running. the battery has one job, and one job only: to supply current to get the engine running. that is all that it does. after the engine starts, the ALTERNATOR provides ALL electrical current, and the battery is merely a passenger from then on. In fact, you can remove a battery from a running vehicle and it will continue running. (NOTE: this is NOT a good idea to do this on todays computer controlled vehicles. It can theoretically cause a voltage spike that can fry some engine control components (like the computer, for ex) which can be expensive to replace.) This technique used to be the backyard mechanics easiest way to test for a bad/weak alternator. Disconnect the positive cable from the battery and if the car dies immediately, you would then know the alternator wasnt working right or at all. In any case, while a bad/weak battery can obviously prevent a vehicle from starting, it cannot cause the engine to die. secondly, a hot battery has less power than a cold one??????? that must be why cars start SOOOO much easier in the winter, huh? dont believe me? look at a battery (any battery) and you will see that it carries TWO power ratings: cranking amps and COLD cranking amps. cranking amps (at 32 degrees F) are always higher than cold cranking amps (at 0 degrees F). oh, and batteries do not get hot from flowing current. they can and often do get hot while recieving current (during charging) but not from supplying current. __________________ He's the best, of course, of all the worst. Some wrong been done, he done it first. -fz I jus' want ta thank you...falettinme...be mice elf...agin...