Skvr_Z

Ok I recently installed new cooling fans, new 160 degree thermostat ,but a week ago I noticed my temp gauge would stay slightly under 210 for about 25-30 mins then the temp would slowly rise , I checked for any air bleed the line under the tb, an still have overheating issues I noticed only one fans would be on an sometimes the second would kick on after I turn the car off , does anybody have any advise or tips , thx

DisasterFormula

iTrader: (1)

Usually fans are set to kick on at like 226 or something for fuel economy. Retard timing and what not. I suggest getting a tune for them to kick on at a lower temperature or wire in a manual fan switch.

LS6427

iTrader: (2)

Fans MUST come "on" and go "off" together.......always. They also always work in LOW and HIGH at the same time.

You have a fan issue.

Your temps should decrease and run below 210 if cruising on the highway.......if its still getting hotter than 210 and increasing while cruising....you have another issue.

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Skvr_Z

I know that one fan comes on yesterday I drove the car for about 20-25 mins, and stop at a target 6-7 miles from me and one fan was blowing on high

Skvr_Z

Also , when cruising on the highway temp would drop back then when stop n go it would go back up

LS6427

iTrader: (2)

Your problem than....is your fans. You have to find out why they are BOTH not running TOGETHER.

I'm not positive.....but I think a failing "coolant temp sensor" can cause the fans to wig out. Not sure which year PCM you have....I see you have a crate engine. Some years act differently when temp sensors start to act up.
.

Skvr_Z

My car is a 99 with the stock PCM

Skvr_Z

I installed a new rely ,new coolant temp sensor ,bleed the coolant and the car still overheats don't have a clue whats going on

LS6427

iTrader: (2)

Read post #3 again.

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Skvr_Z

Anybody in the NYC area interested in taking a look at my car

95badboy

Bump for this thread I have a 99 ss doin the exact same but it pushes watercoolant out the over flow

LS1121

iTrader: (17)

how does it act when you turn on the A/C. Running the a/c will cause both fans to operate.

95badboy

Aint tryin to steal the thread but mine don't help any

Skvr_Z

Still having overheating issues , new water pump thermostat ,hoses , out the funny thing is I would pull over to check if my cooling fans is on an only one "driver side" is blowing on high , the only time they both on is if my car get too hot & I shut her down then they both stay on

azvette89

Im having the same problems

LS1121

iTrader: (17)

I know this might sound stupid but look up inside where the radiator is because I had picked up one of those plastic shopping bags like you get at the supermarket, somewhere on the road and it was blocking the air flow.

Skvr_Z

I took my car to a radiator shop that checked out ok , I'm not leaking, smoking, losing coolant nothing, got the motor checked out , that's fine idk

88blackiroc

iTrader: (3)

What would the other issue be? My car has this problem where the the heat will increase on the highway while cruising and it climbs higher when i go wot. However, ive seen it rise while not being on the gas and cruising. Ive bled the system, its a new tstat, what could it be? Car is a 88 camaro with a 99 pcm and wiring harness

azvette89

I'm thinking it's gona be a fan problem, my car is running past 220 and when I open the hood only one fan is on. Weird because when I turn the AC off the driver side fan turns off and the passenger side then turns on. Anybody know the reason for that?

1_MEANZ28

iTrader: (4)

replace the radiator's cap,,trust me ...been their done that