I was going to take a hair dryer to it but I don't know if this would help. I will check if the fuel pump will engage first but I think it is a weather issue. If it is frozen how would I check for that.
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Re: 2001 jimmy cranking no start in cold weather
It might be distributor cap, coolant temperature sensor. Try to warm the engine head with hairdrier
espetially distributor cap, plugs connections etc
If it will help look the solution where. Sometimes usefull to check battery and replace oil and fuel
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have the ECT checked, Engine coolant temperature,lets the computer know whether it should push more fuel thru for cold mornings , the sensor could be telling the computer that your engine temp is 75 degrees,means less fuel being pushed
My 89 Cutlass had a strange starting problem too...During cold weather she would crank, but she would not start...I could heat up the top of the engine with a hair dryer and she would start....Shop finally fixed her, replaced the COIL, the old coil was no bueno in cold weather!!!!
One thing you can try since it starts good in warm weather, is to ,on a cold morning, take a hair dryer and warm up the suspect part to warm weather condition. Then try and start the car. If it start ok you have probably found the weak part.
1. cranking is "turning over". Starting is what it is not doing. Did you check for spark at plugs when cranking? Why did you change battery? If fuel line is frozen, generally freeze takes place in the line. Anything you add to tank will not help at this point. (you can heat line with a hair dryer etc (no torches) Most fuels today contain some alcohol so antifreeze for fuel is pretty much redundant. If you have been cranking it fore some time, it would be a good idea to check spark plugs to make sure they are still dry and not fuel fouled... Liquid gasoline does not burn... only fumes ignite. In cold weather, fuel does not vaporize properly and can easily foul plugs.
I would change all of it. Spark plug wires will leak under the high voltage w/o any outward signs. Unlikly fuel pump . Not effected by damp weather. If after all that and it still doesn't work, change the coil.