Your engine accumulates a lot of heat when working, and coolant helps to collect this generated heat by transporting it to your vehicle's radiator for cooling. You May Have Low CoolantĬoolant regulates engine temperature and the flow of hot air into the cabin. If your car only has heat when driving, the following issues may be to blame. Many issues with inconsistent heat in the cabin can stem from coolant-relatedissues. Your car's heater works in tandem with your engine's cooling system. ![]() Why Does My Car Only Blow Hot Air While Driving? ![]() What gives? Stay warm this season by learning what could be causing your heater to only work when you drive and what you can do about it. This dropped my temp from ~220 to ~170 (on the Unlimited with 4.You pull up to a stop in your car on a cold day, and suddenly your cabin's heat turns into an icy blast. Take it for a drive and get it good and warm. Wipe up the little transmission fluid that dripped.Ĭrawl under the Jeep, check the hoses to be sure they are not hanging. The one from the top of the cooler will go to the hose going towards the transmission. The one from the bottom of the cooler will go to the hose coming from the front of the Jeep. Slide a hose clamp on each side of the transmission line and slide the hoses with the hose barbs into the transmission lines. Get 2 hose clams ready, use some cutters, and cut the UPPER transmission line in the center of the rubber section. Place a drain pan under the transmission hoses. Next, I put the font of the Jeep back together (remember to plug the lights back in!).ĥ. At this point, attach a 3/8” hose to 3/8” hose barb adapter to the end of each hose and secure with a clamp.Ĥ. Use the remaining hose, and run it from the top of the cooler, route it the same way to the same location. Route the first hose from the bottom of the cooler under the Jeep and to the upper transmission hose. You could paint your brackets black (which would look nice) – I did not.ģ. I had to drill holes in the lower grill brace to bolt the lower cooler brackets to. I cut the brackets to length with a Dremel and used the supplied hardware to bolt it in. This also puts the cooler a couple inches away from the condenser for better cooling. I did not feel comfortable pushing the plastic zip tie things through my condenser and radiator, so I mounted my cooler with the supplied brackets. If you choose on the side, make sure the INLET (from the factory cooler) is on the bottom and the top hose goes to the transmission. The MOST efficient is to have the cooler mounted with the outlets up or on the side. The least efficient way to cool is by having the hose outlets facing down. I called B&M on this, because I was not sure. The mounting orientation of the cooler is VERY important. The grill will just pop off – don’t forget to unplug the parking lights. I used a flat head to pop the retainers out after that. Use a Philips screwdriver to remove the 6 plastic retaining screws (for on 07 – for an 08, you will just pop them off with a flat head). ![]() I know that this write up has been done before, but I had some unanswered questions when I went to do mine, so here is my write up:Ģ- 3/8” to 3/8” hose barb connectors (home depot)Ģ additional hose clamps for a 3/8” ID hoseġ quart of Mopar ATF-4 Transmission fluidġ. Please register or login to enable Dark Mode.Archived - Jeep XJ Cherokee & Grand Cherokees.Gladiator Electrical, Lighting & Sound Systems.JK Electrical, Lighting & Sound Systems.VENGEANCE - The Curmudgeons Revenge JK Build.Sponsoring Manufacturers/Vendors - Check out Cyber Monday Specials!!.JK-Forum Rules & Sponsorship Information.
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