My camaro (3.4L) is overheating?

Question

My camaro isn't necessarily overheating but it's running a lot hotter than it used to, and I don't know what else to do. I've replaced the water pump, had the cooling system flushed, had my radiator rodded out, replaced the radiator cap, put in a new thermostat (OEM 195), new upper and lower hoses and a new heat sending unit. The fans come on when they're supposed to as well. What else could it be, any ideas?

Answer 1

go to the auto store like autozone or even walmart and buy a seperate water temperature gauge and install it as your gauge might be reading incorrectly as you have replaced everything that would cause overheating, the only other possibility would be that you don't have a radiator shroud on your car and maybe it didn't even have one when new.

Answer 2

there is a few things here to consider:

1st- Like the poster above mentioned, you may have an inaccurate gage or temp sender.

2nd- when you had the cooling system flushed, was it just the radiator or the whole system? A lot of times, people will get the radiator flushed and not the engine, so once you run the vehicle, all the crap that's still in the block gets back in the radiator.

3rd- where do you live? There have been a lot of higher temperatures lately and that means the radiator is getting warmer air through it causing the water not to cool normally.

all of these are good places to start.
Good luck, hope this helps!

Answer 3

Jr.
I have worked as a service writer in my Dad's shop and seen many GM 3.4L overheat because of failed intake manifold gaskets. Sometimes the plastic manifold is rotted out as well.

Fix is to remove intake, inspect all corners of manifold for coolant leak and replace gasket. This almost always fixed an overheating problem that was not caused by the things you already identified.

The gasket replacement job is about $400, the manifold adds about $200 to the cost.
Good luck,
Jin Ju

Answer 4

It is most likely a bad coolant temp sensor/sender ...

for the 3.4 it is located on the intake manifold near the thermostat...

I just did one Sunday afternoon on a 94 Camaro for a customer... he broke his a couple of months ago when he replaced his thermostat.. he was having that problem exactly as you describe...

1/2 hour after I replaced it for him he called back to confirm that that had taken care of the problem and stated he was very happy for getting car repaired for only $50 (parts, labor and mobile service call totaled $50 I charged him...

part # should be Neihoff TS-25381 (Schucks Auto Parts Brand)

Walt

Answer 5

Check the car for air?

Take the thermostat out restart the car see if it is circulating?
Water jackets may be plugged -

Get a better gauge and see if that is the problem.

Answer 6

It may simply be the temperature sensor controling the gage on the dash that's bad and not giving an accurate reading.

(An option)

Answer 7

CHECK FOR DAMAGE UNDER THE NOSE FROM CURBS,SPEEDBUMPS ETC... CRITICAL !! for airflow across a/c condensor and radiator