Check if the car have the thermostat in the cooling system, because in cold weather the thermostat close the water flow in the cooling system (radiator, head of the motor) and the car gets temperature faster to warm the engine to operational temperature.
SOURCE: 93 Grand Cherokee 4.0 trouble starting in cold weather
Welcome to the forum. Your question has to many variables. Cold weather out here in Cen Cal this time of year is mid 40s. Is the problem when the vehicle is cold as in ovrernight but starts ok when it is warm? Does it crank OK but seem like it's not getting fuel? If you hold the throttle slightly open, does it start OK?
SOURCE: 95 jeep grand cherokee, hard starting, backfires, when cold
get a couple bottles of gas line antifreeze .. if you don't already use it and add it to the gas.
Robert
P.S. in minus 40 i don't even get out of bed... minus 23 here last nite... isn't winter grand
SOURCE: Hard starting when cold ( engine cranks normally )
see if your engine has a ECT sensor (temp sensor that delivers information to your ECM) they are installed on the intake side of the cylinder head, it usually has 2 cables, have it checked replace if necesary
SOURCE: My 1994 Jeep Grand Cherokee won't start in very
My guess is there is ingress, via a leak, of un-metered air after the Mass Air Sensor. The air under the hood can get very hot on a sunny day. If there is a leak in the filtered air ducting or one of the vacuum tubes has become detached from the intake manifold/plenum then sucking in hot air will make the fuel mix to the engine to lean to fire up. Check you ducting especially where it joins the throttle for any cracks or loose joints. Check crank case breather pipe connection to duct. Check each vacuum tube, after the throttle, connecting with the manifold for leaks. Check the brake vacuum servo pipe for good connections
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