lookin4aTA

For the last month or so my car has been overheating, but it only happens below like 45-50 mph. It has a NEW thermostat, although it is a 185, and yes I know to order a 160. Just need the money. Anywho, the other weird thing is the oil pressure is jumping around at idle quite a bit. It will fluctuate anywhere from 4-6 psi at any given time. So could this be a head gasket, or would flushing/reevewrse flushing the radiator help solve my problem?

onephatZ28

iTrader: (8)

Did you get all the air out of the system??
Also did you check the fans to make sure they are comming on?

lookin4aTA

AFAIK all the air is out and I can't tell wether or not the fans are coming on.

onephatZ28

iTrader: (8)

Let the car run, stand out side the car you should here them come on. If not put your hand in front of the fans you should fill the air.

It is normal for the temps on the gauge to go up to the middle or past middle of the gauge before the fans kick on. The middle of the gauge is in the range of 210º - 220º. With factory programming, the PCM will command low speed fans (or primary fan) "ON" at 226º and "OFF" at 221º and high speed fans (or secondary fan) "ON" at 235º and "OFF" at 230º. The fans should come on before it gets to any part of the red zone.

I found this here:
http://shbox.com/1/4th_gen_tech2.html

camaro-94-z28

iTrader: (3)

if u turn on the a/c the fans should kick on that way 2. did u happen to remove that plastic piece under the bumper that send air up into the radiator ??

lookin4aTA

Yes I have taken the plastic piece off, but am going to put it back on. I did it to clean some **** off the radiator the other day. But it runs the same with or without that piece on.
onephatz28-I never had problem with overheating when I was on the minland. Car had a 160 t-stat in it then and never ran more than 170ish in connecticut. But this happened about 2 weeks after I picked it up from the shipping company here in hawai'i. Pls you cannot here the fans if you tried to. It is too lound uner the hood.

onephatZ28

iTrader: (8)

The 1st thing you need to do is find out if the fans are coming on, let the car run and put your hand in front of the fans and see if you can fill the air. Be careful!!
If they come on then.....

If you can, get the 160* hypertech t-stat. The LT1's like the lower t-stat temp.
Also is there a big difference in climate from were you lived in Connecticut? I would think it is hotter and more humid in Hawaii, and LT1's hate hot weather. I just think with you going to a 185 t-stat and moving to a hotter place may have a lot to do with it. I could be wrong.

onephatZ28

iTrader: (8)

When my car did this it was a bad oil sending unit. I put a new one in and it was fine. Check that out if you can

onephatZ28

iTrader: (8)

Maybe someone else may have some ideas??????????????????

Revelation Z28

iTrader: (10)

my fans dont come on until almost 3/4 then itll go back down. this is idling in traffic too.

hawaii is almost like here, so you are just experiencing the hot weather attitude of the cooling system.

onephatZ28

iTrader: (8)

Also did you read this?? the cooling system is about 1/2 way down the page
http://shbox.com/1/4th_gen_tech2.html

Its a good site

onephatZ28

iTrader: (8)

Ya my car did too, then I did the hypertech 160* t-stat and the SLP fan switch and my car always runs a 170 now

Revelation Z28

iTrader: (10)

lol well by your location SB should be 2* cooler than here

yea even though its cold now here it still goes near 3/4 in traffic like i said.

onephatZ28

iTrader: (8)

LOL, I was talking about summer time. sorry

Revelation Z28

iTrader: (10)

how did it run in the winter before the 160 stat and fan switch? kinda like mine?

onephatZ28

iTrader: (8)

Ya, I would run the heater on high in traffic, that help a little. My car ran hot all the time, until I did the t-stat and SLP mod.

lookin4aTA

ok, the 185 was a quick fix thing since I needed the car running. It ran just fine for the first couple weeks I had it out here. And yes the weather is alot different than connecticut. The 160 and a manual fan switch are the things I am going to try. Just to wait til next weekend to order them.

Rocky70304

iTrader: (4)

Yeah, there is a tsb (pi) on the f-bodies for causing an overheating problem while driving after you remove the plastic spoiler under the car, just put it back on and see if there is still an issue.

onephatZ28

iTrader: (8)

Cool, Good luck with your car man. Let us know how it works out.

1994Z28Lt1

iTrader: (1)

man o man, put it back on and then come back if you still have a problem