Question about 1996 Dodge Intrepid
Has new battery, synthetic oil. Problem has been happening for years only when temperature outside gets into low teens and below. Engine cranks fast, sputters occasionaly but doesn't start. Soon as temperature gets into mid to upper twenties it starts fine and runs great. Suspect ECM, air temp sensor or coolant sensors. How do I troubleshoot this with out paying big bucks to dealerships? I heard there was a safety recall for ECM download for cold temp starts, but not sure because I can't find it on the web. Car is not mine but my mothers and she can't afford to replace alot of parts by mechanics throwing parts at it to fix problem.
First take to autozone and have it scanned for codes if no codes then take to dealer to have cold start flash done
Posted on Jan 17, 2009
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Feb 21, 2015 | 1999 Chevrolet Silverado 1500
Reason 1 - Gasoline, like any other liquid, evaporates less when it is cold.You have seen this -- if you pour water onto a hot sidewalk it will evaporate a lot faster than it will from a cooler place like a shady sidewalk. When it gets really cold, gasoline evaporates slowly so it is harder to burn it (the gasoline must be vaporized to burn). Sometimes you will see people spray ether into their engines in cold weather to help them start -- ether evaporates better than gasoline in cold weather.
Reason 2 - Oil gets a lot thicker in cold weather. You probably know that cold pancake syrup or honey from the refrigator is a lot thicker than hot syrup or honey. Oil does the same thing. So when you try to start a cold engine, the engine has to push around the cold, gooey oil and that makes it harder for the engine to spin. In really cold places people must use synthetic motor oils because these oils stay liquid in cold temperatures.
Re ason 3 - Batteries have problems in cold weather, too. A battery is a can full of chemicals that produce electrons The chemical reactions inside of batteries take place more slowly when the battery is cold, so the battery produces fewer electrons. The starter motor therefore has less energy to work with when it tries to start the engine, and this causes the engine to crank slowly.
All three of these problems can make it impossible to start an engine in really cold weather. People either keep their cars in heated garages or use "block heaters" to get around these problems. A block heater is a little electric heater that you plug into the wall to keep the engine warm.
i hope it was convince answers
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