Hi i have a 1984 trans am H.O. and it tendes run hotter then it should is there a lower air damn or scoop that goes underneath the car? to push more air through to the engine?

 

Yes It Does Have An Air Deflector.

 

Should be an air dam attached to the radiator core support, right below the rad itself; maybe 4-5" tall, black plastic. The car will run hot on the highway without that. Its job isn't so much to "scoop" air, as it is to create a low pressure zone behind the rad. (since flow always occurs from high pressure places to low pressure ones...) Some of the Firebirds have a 3-pc air dam for some reason instead of a 1pc, not sure if 84 is one of those years.

But then there's always the question of what "too hot" is. In your car, the fan is electric, and the switch doesn't even turn the fan on until around 230°F. IOW, in the opinion of the factory engineers (not that those guys know anything about how their cars should work, but just using them as a point of reference) the engine doesn't need cooling at all until it reaches that temp. If the car is sitting still idling, the temp should rise to that point, the fan should come on, it should drop to about 210° in a minute or so, the fan should shut off, the temp should rise again, the fan come on again, .... all day long, or until the car runs out of gas.

 

Okay thanks guys, cause it looks like there should be one on my car but it look like someone chopped it off or it broke off. Does anyone make a replacement or is a junkyard gonna be the way to go?

 

Could anybody post some pic to what this peoce looks like? it would be greatly appreciated.

 

Yeah they break off a lot... they hit parking lot bumpers, driveway ramps, all sorts of things. Almost impossible to avoid sometimes. Unlikely you'll find one in the boneyard, as all the carcasses the buzzards collect are in the same situation as yours, for the same reason.

It's just a flat flap of plastic. Nothing complicated or special at all. You could do a lot better to just go to a 18-wheeler store and get a rubber mud flap; cut about 4 - 5" off of it; screw a piece of about ¾" or 1" aluminum angle to the car where the old one was; and use some screws and Tinnerman clips to fasten the rubber strip to the aluminum. Prolly last forever since instead of breaking off it'll just bend out of the way if you hit something with it.

 

No Pic,Only Have A Drawing Don't Know If It Will Help.

 

I fixed the old air dam with some old leftover wainscotting scrap and mechanic's wire. This was on an 88 GTA: