After installing my headers and cat-back, the car rarely gets above 160 degrees while cruising. If i sit in traffic in 80 degree heat it gets a little warmer, but i'm concerned that it is never getting into closed loop. Is this possible?

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1986 Trans Am
305 TPI
"If it's not one thing, it's another!"
http://www2.hanover.edu/hierlmeier

 

change your thermostat. get one that is at least 180 degrees.

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406
accel supper ram
6000 rpm Hyd roller cam
afr heads
t-56 trans
9" ME rearend

 

the stock thermostat is still in it, i believe its 180 or above

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1986 Trans Am
305 TPI
"If it's not one thing, it's another!"
http://www2.hanover.edu/hierlmeier

 

Yes, but when was the last time it was changed? They don't last forever. Generally, when they get older they become "weaker" where they don't fully open nor close: something like you are experiencing.

 

Ahhh, so your saying it could be stuck open....can i just pick up a thermostat from a parts dealer and specify 180 degrees?

thanks



------------------
1986 Trans Am
305 TPI
"If it's not one thing, it's another!"
http://www2.hanover.edu/hierlmeier

 

You can go to a parts store and get a thermo they are not that expensive and get the gasket as well. Total cost will be like $8 or so.