Car Starting Problems
BMW 3-Series
VW Jetta

Why would a car have problems starting when the engine is cold?

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Wiki User
2005-01-22 14:04:00
2005-01-22 14:04:00

Since you don't know what kind of car you have, the year or the engine size, I'l throw an idea-Coolant temperature sensor for the ecm. This reads the temperature of the engine and tells the computer parameters for the fuel air mixture. If the ecm gets bad info it may richen or lean out the fuel to the extent that it affects combustion.

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have you managed to sort this problem out as i have the same problem with mine and i cant seem to fix it thanks

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Yes if ur car has many or some sort of engine problems

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pcv rerouts exhaust air to the air filter,it functions by opening and closing relative to rpm, as rereouted exhaust could lean the mixture. so the engine could develop cold starting problems and backfire while decelarating

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Too much fuel - and all engines run rich when cold.


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