hey all got a wierd question and ill crap my self if any of you can figure it out. i was running with a miss in my motor for a month. and my cooling system was fine. i sorted the miss out got the motor running bueatiful and now my fans are acting gay. factory setting is at 225 my fans would kick on around 250 and pull down to 225 and then some days they come on at factory specs so i got tired of this and put that nice fan switch from jegs in there on at 200 of at 185. now sometimes my fan decides to kick on at 200 and run and sometimes it kicks on at factory settings whats up with this i replaced my computer twice and everyhing else is fine i should have no air i bled it properly. its not overheating or anywhere close but its just scaring me. what could be causing this gayness

 

wire it into the ignition fuse . that way it will run the whole time the ignition switch is on . i did that to my 87 z28 because i was having issues with it running hot on 95*+ days . its taboo to do this to some thirdgenners , but i had no problems and it was wired that way for over 2 years

 

i have done do mine what he just said,whenever i turn my key on,the fans come on. here in Va we get waaay too much humidity and my car hates it,runs about 190-200 most of the time,but if i barely get on it it jumps up to 220 in no time (which w/ traffic now-a-days,i seem to get on it alot)

 

If you're going by your stock gauge it probably isn't actually getting that hot....3rd gen gauges are notoriously inaccurate.

 

so the guages are in accurate if it runs normally while driving at a quater on the guage is it actully hotter then

 

I'm not so sure I agree that all 3rd gen gauges are inaccurate, although I agree on the highway it sounds to me like his car is not actually getting that hot.

The gauges in my '89 GTA certainly seem to work properly, and accurately. For example, the primary coolant fan turns on at 220 degrees with the stock chip, and thats exactly what my coolant gauge shows when it kicks on.

Running at at 'quarter-gauge' would be about right. The Tuned Port cars run cool at highway speed; its only when sitting in traffic or the drive-thru that the coolant temps start climbing. 'Half-gauge' would be about 220 degrees, and thats pretty hot, although it's by design (reduced emmissions).

There are several ways around this; from running a manual fan switch, to a custom PROM, or a 200 degree coolant temp switch in the cylinder head (stock is the aforementioned 220 degree unit).

If your car is running coolant temps similar to the above, then its running the way a stock Tuned Port engine is supposed to run.