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Old 01-03-2013, 10:54 PM   #1
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get the engine warm quicker

ok guys, i've got the issue of my heater doesnt get warm until i'm over halfway to where i'm going. making my drives miserable in the cold. any tips? i've heard put some cardboard in front of the radiator. but does that really help? i mean, all its doing is blocking air from moving through the radiator. but the water in the radiator isn't flowing until the engine warms up and the t-stat opens anyways so it doesnt seem like that would have much effect.

is there any way to stop the water from flowing into the heater core until it's already warm? it seems like that would have more effect.

also, the gauge doesnt seem to be getting up very far during the cold weather, making me wonder if my motor is getting to 195. if it's not, it's burning more gas than necessary trying to get it there. i guess the cardboard would help that by restricting the cooling ability of the radiator. but what i'm primarily concerned with is how to get this thing blowing warm air faster

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Old 01-03-2013, 11:30 PM   #2
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Is this part something you might consider? I bought a similar unit for the other half's Liberty (have yet to install it though).

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Old 01-03-2013, 11:37 PM   #3
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Is this part something you might consider? I bought a similar unit for the other half's Liberty (have yet to install it though).
Those engine block heaters are more for starting the vehicle in really cold environments. It helps keep the oil warm, which assists with better lubrication/oil flow I believe. That part wouldn't assist in the overall heating of the interior. Placing a baffle of some sort over the grill slots would help keep some of the cold air from flowing through the radiator which slows the heating. Might check that your heater switch relay is working. I have heard of peoples switches having issues, causing the heater to take forever to heat the interior... or maybe the heater core is bad?
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Old 01-03-2013, 11:50 PM   #4
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If your gauge isnt going up very far with the cold weather, Im thinking your t-stat is partly stuck open. Ever changed it? Flushed the system? This of course is based on that your guage is working properly.
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Old 01-03-2013, 11:55 PM   #5
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Replace your T stat it might be bad. When they go bad they stick open its a safety thing.
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Old 01-04-2013, 12:14 AM   #6
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engine was rebuilt in march and EVERYTHING was replaced, tstat included. i'm not sure on the gauge, they arent entirely accurate and it's going up, just doesnt seem far enough. i'm going to check with a thermometer this weekend.

meant to add, i'm not interested in adding a block heater. i live in the south, it's not cold for but a few months. not worth the effort for me
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Old 01-04-2013, 01:18 AM   #7
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my experience (3 different 4.0s- 93 XJ, 00 XJ, and 02 TJ, all in northern/cold climates) is they warm up faster than any other vehicles I've ever had. Even at below freezing, 5 minutes or so of warm up and they should be running right at normal operating temps. And once the block is warm, the interior heat can get so hot, it will flat out roast you out of the cab. I'm guessing something is wrong with yours.
Either that or you're a southern sally.
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Old 01-04-2013, 06:51 AM   #8
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engine was rebuilt in march and EVERYTHING was replaced, tstat included.
That don't mean SQUAT. I've seen thermostats fail right out of the box, within a week, and within a month. Change the thermostat.
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Old 01-06-2013, 06:22 PM   #9
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I think Steve305 is correct, change the Tstat. Even at 0 Celcius(32 faren) my Jeep is putting out a lot of heat within 5-10 min. MAX. After 10 min you couldn't hold your hand within about 7" of the vent.
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Old 01-06-2013, 07:47 PM   #10
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