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View Full Version : problem with sub cooling fan 87 lxi



jeffpinto
03-22-2015, 11:48 AM
hey guys, another question, I recently degreased my engine and washed it out at a car wash using their pressure washer. I was careful to cover all the important things and to be extra careful when spraying. But I must have done something because my sub cooling fan comes on when I turn my car off and it stays on. It will go off when I pull the sub fan fuse under the hood, or when I pull the delay fuse under the hood, or when I pull the sub fan relay. I unhooked every sensor and connector I could see and let them dry overnight and it still does it. please help

Dr_Snooz
03-22-2015, 02:59 PM
Starting on p. 23-4 of the manual is a section on diagnosing the cooling fans. The fans are designed to come on and run for a maximum of 15 minutes if the engine is hot. If they run longer, then you might start testing the cooling fan timer unit, p. 23-6 & ff.