bigfatls6

iTrader: (34)

I just bought this car it runs right at arrond 210 degrees by the guage on the dash. I have noticed the fans arent comming on. I ran a wire fromn the 40 amp fan fuse and tied it in to the fan on the driverside of the radiator and both fan fired right up and ran. I have swaped the relays all arround and nothing. What else could it be and what should I look for?
I also checked one fan comes on when the ac is on. It is the fan on the passenger side of the radiator.

TCW

iTrader: (3)

Mine runs around 210 I believe, mid of the range right.

2001NBMZ28

The PCM turns the fans on at whatever temps are programmed in. Stock settings are high - plus the '99 and up gauges aren't accurate. Don't know about getting only one fan with the AC on, thinking they should both run on low or high speed, at least mine do with a SLP manual fan switch. Never checked with just the AC on. I have LEDs wired to mine so can see them coming on/off hi/low speed and this time of year in Jax I never see high speed fans, and occasionally low speed - with the settings programmed low for the 160 tstat. If the car isn't overheating I wouldn't worry about it.

bigfatls6

iTrader: (34)

I guess these cars are like any other if it over heats its gonna blow water out right?

bigfatls6

iTrader: (34)

where is the temp sensor at on these cars? I had a 99 transam back in 99-2001 and ireally didn't remember if it ran at the same temp as this car is but I had a lot of bolt ons and a hpp3 on it.

Black_Bird

iTrader: (6)

The fans don't come on until like 228 degrees on stock tune, you're fine.

2001NBMZ28

By the gauge not being accurate I meant it reads a range vs. actual temp. If it climbs above 210 it's starting to overheat and will further climb and go into the red if something is wrong. At the first mark on mine the ECT on a scanner is 140 degrees. The ECT sensor is in the drivers side head, right by #1.

bigfatls6

iTrader: (34)

damn these things like to run a little warm dont they?

Schnell

Don't the fans turn on automatically if you turn on the AC?

bigfatls6

iTrader: (34)

1 fan comes on auto with the ac

moehorsepower

iTrader: (3)

He is right, the factory setting are around 228 deg, they do this for emission purposes....and yes both fans are set at different temps so 1 will come on then the other at a higher temp....

domesticracer1

I have a 99 trans am also, and the temp gauge in the car reads 210, if I drive it for a while and stop and turn the car off, it overflows antifreeze, but it never shows that it is overheating on the car gauge. What could this be?

moehorsepower

iTrader: (3)

your radiator cap could be weak, install a new one, check manufacture specs but I believe it is around a 16lb rated pressure.

domesticracer1

Its got a new 18lb rated one it., I checked the relays and the fuses and they all checked out. I also jumped the fans out and they both work perfect when jumped out.

domesticracer1

I got it fixed, I just wired a relay to the fans and used the ignition circuit to activate the relay, so now as long as the car is running the fans will be

Viper

iTrader: (6)

Might wear out the fans quicker doing that, no need to have them running ALL the time.

ae13291

iTrader: (8)

not good u should have done a manual fan switch!

moehorsepower

iTrader: (3)

I tune the fans to come on a set temp then have both fans turn off at aroung 60MPH, not needed at that speed the temp will stay at normal, One time I put in some radiator cleaner, I believe it was prestone, You were suppose to leave it in for a few hours not the 10 minute stuff, but I drove the car for a few days, flushed it, put new fluid and it fixed my problem..

domesticracer1

I am probably going to add a switch to the circuit so that I can break the circuiot to turn them off while on the freeway and so on.