Few ideas.
I have the oil pressure gauge from an 83' toyota, the whole housing with the other gauge in it..
Can i make this guage work in my pickup?

Also, is it possible to make the heater fan go any faster?
I.e. Mod it

 

nobody?
nobody knows if the oil pressure gauges are the same throughout the years?

 

i think the idiot light better suites you. if u can handel it get the sr5 cluster ha ha ha

 

pop your vents off and suck the 20 years worth of crap that has fallen down there with a shop vac. that will help increase your air flow. plus it is free.

 

Also, clean out the blower itself. Might be full of leaves or other junk.

When the resistor goes bad you lose speeds other than high, so I doubt that's your problem. However, if all your speeds aren't working: http://www.4crawler.com/4x4/CheapTricks/Blower.shtml

 

No it's not that, i like it to have it on Feet/Window defroster. I always fog up my window on this setting.

Mkay, so all i need to change is the oil pressure sending unit?

@Ocd: Which vents? The ones up under the dash? Or the actual vents themselves on the dash.