Question about 1986 Pontiac Firebird
The car is a 1986 Pontiac Trans Am. I have this strange problem. I'lltry to explain what's happening with me, but excuse my English I'm notfluent in it.
If running slowly in the City, in normal traffic, the car is notoverheating. The fan start (at 160 i think) and keep working as normal(by switching on/off with the temp go over/under 160). Even if I startthe AC, the heat slightly move up but still under the middle (around218 or something like that). So i have No Problem with heat whendriving in the City and the behavior of the coolant system looks Normal.
This Normal behavior still in case also when i drive on the highway, even if i drive Fast (around 70mph) for hours.
But what really makes me crazy is that the car overheat ONLY whendriving up a Hill (at low OR EVEN high speed) .. the temperature go to 220witch never happens in the city or the highway .... i continue to drivethe hill and the temp move up slowly over 220 .. up and up and up ... as long asyou're driving up!! if there is a flat ground after the hill the tempwould go down slowly to normal. but if the Hill is long and that's thecase in my traveling to the mountains in my country, even that strongfan don't force the temp to go down.
Why it overheat only in driving up a hill or mountain, and works normal on a flat road?
I would mention that i cleaned the radiator recently, and changed its cap also. and the fan is working normally. The engine is restored to its original condition. the air dam is in place.
could it be Air in the coolant system? but if that's the case shouldn't the car be overheated all the time not just in driving up hill??
Any Ideas for Help ??
Look under the radiator should have a air deflector it's about 4-5 inchs in width and 3 feet long. It should also have a smaller pointy plastic next to that air deflector.
Posted on Aug 30, 2009
Its overheating when you go up long hills because the engine is not getting adaquete air in the system. The radiator is angled to get optimal air a certain way. It may overheat but you shouldn't start seeing smoke.
Posted on Oct 09, 2008
a 6ya expert can help you resolve that issue over the phone in a minute or two.
best thing about this new service is that you are never placed on hold and get to talk to real repairmen in the US.
the service is completely free and covers almost anything you can think of (from cars to computers, handyman, and even drones).
click here to download the app (for users in the US for now) and get all the help you need.
Posted on Jan 02, 2017
Tips for a great answer:
Dec 06, 2015 | Pontiac Cars & Trucks
Jul 24, 2014 | 1986 Pontiac Firebird
Sep 28, 2012 | 1986 Pontiac Firebird
Aug 29, 2010 | 1986 Pontiac Firebird
May 05, 2010 | 1986 Pontiac Firebird
Jan 20, 2010 | 1986 Pontiac 6000
Nov 25, 2009 | 1990 Pontiac Trans Sport
Jun 25, 2009 | 1986 Pontiac Firebird
409 people viewed this question
Usually answered in minutes!
Step 2: Please assign your manual to a product: