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Member
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Join Date: Jan 2021
Location: Idaho
Posts: 610
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Member
Join Date: Jan 2021
Location: Idaho
Posts: 610
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It’s not a big deal to unclog the heater core. It happens fairly often in these, and almost always if the cooling system has been ran low or neglected.
Get the engine warm, slide the temperature control to hot in the cab, go out and put you hands on the heater core hoses. If one hose is hot, and the other isn’t, it’s a plugged heater core. The side toward the shutoff valve up center high on the firewall is what controls flow, follow that hose to the core, that’s your inlet. Temp check the outlet.
OTC makes a sweet pulsating air/water gun that makes extremely short work of the job and in my opinion very worth the 50$. You can use a garden hose though.
OTC 6043 Blast-Vac Multipurpose Cleaning Gun, ASIN B000F5ECRW
Looks like it’s 67$ now, still worth it. You can flush the entire system, radiator, and cores both ways.
Other than that all that’s left is the blower or the blend door.
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99’ Black “Highlander” sport, oak, 5VZ auto, 4.30 axle, e-lock, 265/75 Grabber X3,, Bilstein 6112 (2”) front 5160 rear shocks, OME 2906 springs, Durobumps, 4x Inovations front middle rear skid plates, 4XI square TRD tube sliders, lil skips tank skid, lotus dev RCA skids, overland custom sway bar links, Amp’d hidden winch, warn Vr Evo 10s
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