94 Z28 overheating....................
08-19-2008 | 09:34 PM
#21
I had this problem with my 93Z. I replaced EVERYTHING including headgaskets. Last thing on the list was the radiator. And now with a 160 thermostat the gauge stays right below the first big mark on the temp gauge (160-180 i guess) and dosnt move. Not on the highway or in traffic.
This is how I bleed: Fill the radiator with both bleed screws open until the radiator is full and and there is water seeping from the bleed screws. Next I close the bleed screws and
start the engine with the cap off and wait for the crossover tube to stop bubbling.
Then I let the car run (with the cap on tight) until its at the operating temp and then shut it off. Next open the
bleed screws. Each time I do it like this I wont have to open the bleed screws more than twice. Once to bleed, once again to double check. Hope this helps.
Its also very important to bleed the system WITH THE ENGINE OFF.
This is how I bleed: Fill the radiator with both bleed screws open until the radiator is full and and there is water seeping from the bleed screws. Next I close the bleed screws and
start the engine with the cap off and wait for the crossover tube to stop bubbling.
Then I let the car run (with the cap on tight) until its at the operating temp and then shut it off. Next open the
bleed screws. Each time I do it like this I wont have to open the bleed screws more than twice. Once to bleed, once again to double check. Hope this helps.
Its also very important to bleed the system WITH THE ENGINE OFF.
08-19-2008 | 10:02 PM
#22
yeah it was all put back together right. I drain the radiator and it was a blittle nasty at first. I flushed it for about 5 min. did the same with the engine. Its all clear water now. I pulled the thermostat out and brought it in to check it. The damn thing dont start to open until 220 then it opens really slow. its suppose to be a 180 
There you go! I'll bet that is your problem. Easy fix at least.
08-19-2008 | 10:34 PM
#23
Will the t-stat didnt fix it. still over heating it only take about 5 min to over heat. I can driv it up the road and after 2 miles its overheated and about the be in the orange. Its pissing me off enough im about to take it somewhere. I never do that but its that or get to pissed and sell it.
Ive bleed it a million time just like stated above and it doesnt help.
Ive bleed it a million time just like stated above and it doesnt help.
08-20-2008 | 03:20 AM
#24
Well I pulled the WP tonight. and the coupler fell off and was laying on the optispark. I made sure it stayed on this time! I feel dumb now. 
Last edited by blake110106; 08-23-2008 at 06:19 AM.
08-23-2008 | 11:25 AM
#27
Ahhhh dont feel dumb, you wouldent believe how many times I have seen that happen. No go out and drive that sucka, Im sure your pissed off enough at this point not having the car for like a week 
08-23-2008 | 04:25 PM
#28
well I got to drive it one day. The trans or TC took a ****. Im in the process of taking it out now lol by the time i get done ill have a new car
