Car is running pretty good after i finished up my felpro 1074 head gaskets install. Only thing is, it runs a bit hotter than it used to. Used to run about 185-190 all the time. Now, the temp will rise to about the 3/4 mark on the gauge, fans will come on and it will drop back down to middle of the gauge, then fans will shut off, then it goes back up and so on and so forth. I never replaced my coolant (just put the old stuff in a bucket during swap, then used it again) so my coolant probably isn't the cleanest. Also, when filling the cooling system, my buddy thought it would be fine to pour in water from the tap. Today i tested the coolant and the ratio was too watery. Could these things cause my lt1 to run warmer than usual? Should i swap out all the coolant? I opened both bleeders today and steady coolant came out so any help is appreciated.

 

wow i have the exact same problem and have those gaskets on my 95 z28 and it dose the same thing and i used the same coolant and have added water to like that and re used it let me know how we can fix this problem its annoying me.

 

anybody?

 

dirty + incorrect coolant ratio can cause temps to rise. Do a super flush and fill it up right, maybe even get one of those flush additives by prestone.

 

i guess it was just running a bit hot becuase i was idling it in a hot parking lot yesterday. Today when i drove it it never went above 190-195. I think i am still going to swap out my coolant though so its not dirty, or atleast correct the ratio. Hopefully i dont have more problems

 

Don't just "swap out". Do a flush and for god sake, use distilled or RO water.