fans will not run!!
Thread Starter
On The Tree
Joined: Jan 2006
Posts: 111
Likes: 0
From: Fort Collins, CO
fans will not run!! just a few days ago my car started to overheat. one of my friends with a 93 z had the same problem, it was his thermostat. i went to autozone bought a 160 thermostat, installed it and no fans still. so i went back and got the sensor(forgot what it was called) that goes on the water pump, installed that, and still no go. my friend that was having the same problem said that the thermostat he bought was faulty, i am getting ready to check this one and see if it is good or not. does anyone have any suggestions, i am out of ideas except for wiring the fans into the ignition fuse so they will start when i start the car, but i would like to avoid it at all costs if possible.
Wow. Hahah. Seems all these trans ams fans are not just NOT coming on. About 5 of us in the last week have had the same problems. Me myself am installing a manual fan switch with a 160 degree stat and its said if you get your computer tuned, tell the person to program so the fans come on way earlier to go along with your 160 stat. Just look farther down and look for the other 5 threads and you'll see!
TECH Enthusiast
Joined: May 2005
Posts: 669
Likes: 0
From: Charlotte, NC
the thermo has nothing to do with fan operation. Fans should come on at 226 and 235. if not, you can run tests. I wrote a fan diagnostic tech article, but I do not have it on this comp.
You just need to verify that your letting the temps hit stock on temps and that the fans are not coming on. I'll see if I can find the tests.
You just need to verify that your letting the temps hit stock on temps and that the fans are not coming on. I'll see if I can find the tests.
TECH Enthusiast
Joined: Oct 2004
Posts: 607
Likes: 1
From: Anna, OH
There are also two temp sensors on the engine. One drives the instrument panel, the other is for the PCM and controls the fans. I don't recall the locations of these, but IIRC, they aren't hard to replace. There are also fan relays involved. I doubt it's the thermostat--that doesn't control the fans--but it's all connected and not expensive to change it all out. Might as well do a new radiator cap also.
Thread Starter
On The Tree
Joined: Jan 2006
Posts: 111
Likes: 0
From: Fort Collins, CO
i did change one sensor, it was on the bottom drivers side of the water pump, was not hard to replace at all, besides bashing my head against the bottom of the block.... i also tried to check to see if i was throwing any codes with the paperclip method, no codes, and the fans kicked on right when the paperclip made a connection. would i be ok to put it in there just to keep the fans on till i can fix it being as this is my everyday driver.
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I had the problem, I had air in the system. Make sure the coolant is full, open the radiator cap when the car is cool, let it run with the cap off and crack the bleeder screw on the thermostat housing. Let it run for a lil bit with the cap off and screw open. If theres air in the system, bubbles will come out of the radiator. After theres no bubbles, tighten screw up and put the cap on. Problem should be fixed.
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On The Tree
Joined: Jan 2006
Posts: 111
Likes: 0
From: Fort Collins, CO
really, i thought about that but i thought the fans still would have turned on. the only problem is that i have to leave at 600 in the morning, so i wont have time before i have to drive it again
Originally Posted by 1quickz
You cant run a cooler thermostat unless you get it tuned for it.
might check your fan motors to.
might check your fan motors to.
Thread Starter
On The Tree
Joined: Jan 2006
Posts: 111
Likes: 0
From: Fort Collins, CO
all fuses and relays are fine, i know the fans are ok because when i ran the paperclip diagnostics check they kicked on. i figure i will take the thermostat out, re-seal it and then bleed the system. just to make sure i know what i am doing, i need to fill the radiator up all the way, and then with the cap off the radiator start it. then losen the screw on the thermostat housing and the air bubbles should come up through the radiator cap, and keep doing this process untill there is no more air comming through the radiator, correct or way off?
On The Tree
Joined: Jun 2005
Posts: 105
Likes: 0
From: Houston
Originally Posted by Honda Hunter
Never mentioned if you checked the fuses and relays.
The same thing happened to me I was doing the same thing you are checking all the major stuff but i never thought to check the fuses and thats what it turned out to be. so hopefully a fuse or relay is your problem.
both third gens i owned did it too, along w/ my cousins 92 bird and friends 89t/a... change the relay and the fan switch, switch is less than 20 bucks n relay is less than 5. bet you it will work if u dont already have a blown fuse. make sure you ask for the sensor for the fans NOT THE GAUGE. replace the fuse first theyre dirt cheap, then try to turn the a/c on, still doesnt work then replace the fan relay, then if that doesnt work get on the ground, unplug the fans, run a jumper wire from the positive terminal of the battery one pin and a ground to the other. just gotta test it out, its all worth it in the long run when u dont have to worry about ur car gettin hot just sittin there, especiall with summer heat coming up real soon.
Thread Starter
On The Tree
Joined: Jan 2006
Posts: 111
Likes: 0
From: Fort Collins, CO
i do know the fuses and relays are ok, i checked them all. i replaced one sensor, it was on the waterpump, drivers side. im down to either trying to beed the system or oreder a new pcm tune, because i would like to have the fans turn on when they are needed, not run constantly.