over heating/thermostat not opening
 

the other day i went to a freinds house and when i got out i heard a bubbling type sound coming from the front of my car...i didnt think much..when i drove it again it started over heating..going over 200 and when its warm it usually dosnt go past 160 i have a 180 thermo..we added some water to my radiator and the thermo opend and it seemed fine..now it was runing at 180..like i said..usually dosnt go past 160..we let it sit there awhile and the thermo wouldnt open..why could this be? just a bad thermo or what?

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'91 GT,91K,T-5,air silencer removed,HD clutch,K&N air filter,Mac long tubes,Cat-back,off road H,FMS 9mm wires,180 thermostat,Competition gauges,C&L 76mm MAF,Accufab 70mm TB,TFS street heat intake

Waiting install:Nothing

Future Mods:3.73's,Pro 5.0,TFS heads,TFS stage 1 cam,lakewood struts/shocks,nitto DR's
ICQ#35670781
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Sounds like the thermo is sticking, just go ahead and replace it..very easy to do and very cheap, I prefer to use the self adhesive gaskets as they are a little easier to install. You may want to go ahead and replace your radiator cap also if it has been a while, that will also cause it to burp all over the place if it is weak.

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Check Out My Site 91GT,Holley SysteMAX II Kit-Heads 2.02" x 1.60" port matched to a 1262,Anderson N-61,24#,76mm C&L,Full MAC exhaust 1-5/8" Long tubes,2-1/2" O.R H-Pipe,2 1/2" cat back, No A/C or PS or emissions, 12" K&N Filter,RNH PERFORMANCE Ram Air,Ron Davis Radiator,Full Suspension,S&W 8pt "X" brace,JAZ seats,3:73's,Welds..etc,4:30's and 31 splines coming very soon! FIRST TIME OUT 12.16@111 WHEELS-UP