Carb Fan Relay Eagle Eye help (1 Viewer)

[1969FJ]

To me it is fun to troubleshoot. Please look at the I.C. who is really in charge.

TC4020BP Datasheet - 14 STAGE RIPPLE-CARRY BINARY COUNTER/DIVIDERS

TC4020BP/BF TOSHIBA CMOS Digital Integrated Circuit Silicon Monolithic TC4020BP, TC4020BF TC4020B 14 Stage Ripple-Carry

datasheetspdf.com

 

[81fj40]

Will do

 

[81fj40]

Well, I spent some time screwing around with the circuit board relay without much luck. So, for the interim (and maybe long term) I installed an Inpower timed relay connected to the carb fan and thermosensor. I'm able to adjust the timing between 0-60 minutes and it comes on when the exhaust manifold temp hits 185 and I turn off the ignition. Then turns off at a predetermined time setting. It's actually a pretty slick little mod I learned here on Mud.

 

[TheHardWay]

Dude, you gotta show some pics!