YotaTech Forums - View Single Post - Rear window relay fix- 1990 4Runner

DCS · 02-12-2008, 01:47 AM

Thanks for the writeup!

Tonight:
I removed the carpet cover, black steel plate, and plastic dust cover. With the tailgate down, I used a battery on the blue plug to move the window "up". I cleaned the window-slots on the sides and also the two lift runners with walmart carb cleaner. I also cleaned the window slots on the cab. I blew everything dry and lubed all the window slots with silicone spray lube. I lubed the window runners with spray teflon chain lube (set's up to a light grease film).

Put it all together, and it's better now. Using only the key in the tailgate switch, the window goes up at acceptable speed, without assisting push. Before this cleanup, I was having the same problem described by the OP.

However, it's still slower than when the battery is hooked straight to the motor. So I'm definitely having some current loss through the harness and relays.

If it gets bad again, I'll try the relay swap.

02-12-2008, 01:47 AM	#10 (permalink)
DCS Registered User Join Date: Jan 2007 Location: East Oregon Posts: 116	Thanks for the writeup! Tonight: I removed the carpet cover, black steel plate, and plastic dust cover. With the tailgate down, I used a battery on the blue plug to move the window "up". I cleaned the window-slots on the sides and also the two lift runners with walmart carb cleaner. I also cleaned the window slots on the cab. I blew everything dry and lubed all the window slots with silicone spray lube. I lubed the window runners with spray teflon chain lube (set's up to a light grease film). Put it all together, and it's better now. Using only the key in the tailgate switch, the window goes up at acceptable speed, without assisting push. Before this cleanup, I was having the same problem described by the OP. However, it's still slower than when the battery is hooked straight to the motor. So I'm definitely having some current loss through the harness and relays. If it gets bad again, I'll try the relay swap. __________________ 1990 4runner 3.0, ISR mod, Taurus E-Fan on Hayden fixed-temp controller, Aisin hubs, super-flow cat. 19 mpg hwy. My e-fan install: smashed and beat the stock fan hub off of the water pump cover bracket using brute force and good luck, then ground down the nose of the bracket for belt clearance, then reinstalled the bracket with 3 of its 4 bolts, and switched to shorter belts for PS and ALT: Goodyear belts #9463 & #4040410. Then installed Taurus e-fan and Hayden controller. Last edited by DCS; 02-12-2008 at 01:49 AM.