Thread: Blazer Heater

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Hey guys
This is about the funniest thing I've ever heard. My cousin in a field of brilliance was blowing heater fuses in his 1987 Cheby S10 Blazer, so he rapped a fuse in tin foil and stuck it in. Needless to say when it tried to blow do to a power surge. It started smoken and melted some stuff. Well He asked me to fix it. After replacing the fan switch which was causing the fuse to blow in the first place. I fixed the fuse box and re connected everything. It works now but won't switch off the low setting. The fan turns on but when you flip the switch to high or medium it stays at a low speed. It's a brand new switch from the local napa auto store. What is going on.

what denny said ^ " you just have to go thru it again "
is suxs but it's the only way . .......

The one on the blazer only has one prong instend of four like yours. I brought it to the shop and powertested it and seem to be fine, medium was a little lower than it should be but the readings came out fine. I'll look at the wiring and get back to ya'll. Thanks for the help.

Originally posted by cutlassrebel
The one on the blazer only has one prong instend of four like yours. I brought it to the shop and powertested it and seem to be fine, medium was a little lower than it should be but the readings came out fine. I'll look at the wiring and get back to ya'll. Thanks for the help.

if its only got 1 prong then youer not checking the right thing.if it dont have 4 prongs then it cant control 3 dif. fan speeds, every time you change speeds it changes to a dif. prong.