Why is my Pontiac Grand Am GT overheating?
Good luck! My 2000 Pontiac Grand Am GT (6 cy/3.4L) has been having cooling issues. I started by replacing the thermostat and performing a flush & fill on the radiator. This didn’t seem to resolve the issue — the engine still overheats when at a stop.
Why are the cooling fans not running on my Pontiac?
The stock engine comes with a plastic intake manifold gasket, which is prone to failure. It leaks coolant into the cylinders and causes inefficiency in the cooling system, leading to low coolant and overheating. You can replace this gasket with a metal one, the repair is a little involved but I managed with a Haynes manual. Good luck!
How does the cooling system work on a Pontiac?
The PCM sends the signal to the BCM, which turns the fans on. Or you can buy a separate temperature fan relay system with a temp probe and bypass the system. It will work as normal cooling when needed only. Its the connecter that you unplug from the temp sensor.
Why does my car run rough when it’s warm?
It is because rough idle when warm can either be caused by one faulty component or through series of problems. However, it is easy to recognize the problem, as during rough idling either the engine would run at an irregular rate or it may have varying RPMs without your foot on the gas pedal.
Why does my Pontiac Grand Prix keep overheating?
Pontiac has located this device there and all your major grounds join here. The mounting plate attached to it becomes corroded which interferes with the grounding signal from the computer to turn on the cooling fans. The bolt that held it in place was actually so rusty that the head of the bolt had broken off as I removed it.
Why does my 1999 Grand Am not overheat?
Fans on my 1999 Grand Am four-cylinder car will not come on car is overheating help please Hi my name is Rodney i have 04 grand am 3.4 go to pfyc.com they have a capers hi speed fan switch its about $100 it’s comes with built in relays u can turn ur fans on manually and it won’t interfere with ur control module takes about 30ins to install
What kind of car is the Pontiac Grand Am?
The Pontiac Grand Am is a mid-size size (and later compact) car produced by Pontiac. The 1999-2005 generation is the final generation of the Pontiac Grand Am. Why dose my car keep overheating?
What kind of car was the first Pontiac Grand Prix?
Early models were available with Pontiac performance options, including the factory-race Super Duty 421 powertrain installed in a handful of 1962 and 1963 cars. The first Grand Prix was a Catalina hardtop coupe trimmed to standards similar to the larger top-line Bonneville, with a distinctive grille and taillights.
Why are the fans not running in my Pontiac?
your issue is with the temp switch not the temp sensor. the sensor will only operate the fans when it fails to avoid a possible overheating issue ,where as the switch is the fans main controller via ecm. the switch should be on the radiator itself or near the water pump. Hi, thanks for the answer.
Are there problems with the GM 3.1L V6 engine?
The only “problem” block in the 3.1L V6 engine family to watch out for was the one used in some 1988-’90 FWD cars and minivans, casting #10065459. This particular casting tended to develop cracks near the center cylinders.
Why does my GM 60° engine not start?
No starts are most often due to faults in the crank sensor circuits (there are two on most engines). In some cases, a no start or intermittent loss of spark can be caused by wiring that is chafing near the rear exhaust manifold. The DIS system has three coils that share paired cylinders (1-4, 6-3 and 2-5).
Why is my heater on my Pontiac Grand Prix not working?
While there are a variety of reasons your Pontiac Grand Prix heater is not working, the most common 3 are a broken heater blower motor, a problem with the thermostat, or a failed heater blower motor resistor.
What happens when the blower fails on a Chevy Equinox?
When the blower motor fails, the air conditioner and heater may still work, and heat or cool may be felt at the vents, but the air pressure will be dramatically decreased. This Read More When the heater control valve fails, adjusting the temperature may not change the air temperature at the vents, whether hot or cold.
What happens if the heater control valve fails?
When the heater control valve fails, adjusting the temperature may not change the air temperature at the vents, whether hot or cold. Also, the valve could leak engine coolant, p…