High Speed fans wont kick on..any help?
#1
Staging Lane
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Location: Edmond,Ok
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High Speed fans wont kick on..any help?
I got a 1998 firebird. Its having A/c problems so i replaced the compressor. About a week later it wasnt cold so i started lookin around and i figured out that my fans are not kicking on "turbo". The engine heats up but the engine stays right at 180 like usual. So I pulled the fuses out and tested all relays and they both work. My next idea is to check the PCM or the high pressure sensor. Just wondering how i can test the high pressure a/c sensor with out removing it from the line.
Also, can i bypass the sensor signal wire to the 5v or sensor ground to make the high speed fans engage? But, the lower speed fans work when driving/idle..
Thanks for any help.
Also, can i bypass the sensor signal wire to the 5v or sensor ground to make the high speed fans engage? But, the lower speed fans work when driving/idle..
Thanks for any help.
#2
TECH Enthusiast
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Not 100 percent sure but I believe our fans are binary. Meaning on or off. Single speed. You do have a low temp fan and second higher temp fan. I wonder if your car just isn't hot enough to kick it in. I think this because that's how my efi live is set up.
If you really think it's an airflow issue i would take the car driving. Going down the road should pull enough air across the condensor to cool the cabin.
If you really think it's an airflow issue i would take the car driving. Going down the road should pull enough air across the condensor to cool the cabin.
#3
Staging Lane
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Well its my daily driver car..I drive it to work and school everyday. The whether has been like 104 degrees everyday for like the last couple months. One day I got my water hose and poured water on the radiator for couple minuets and it seemed to make it a lot cooler. So that's why i was thinking it was getting to hot. What do you think?
Last edited by Coza427; 08-16-2011 at 11:12 PM.
#4
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Well its my daily driver car..I drive it to work and school everyday. The whether has been like 104 degrees everyday for like the last couple months. One day I got my water hose and poured water on it for couple minuets and it seemed to make it a lot cooler. So that's why i was thinking maybe it was getting to hot. What do you think?
Is the a/c compressor clutch engaging or not????
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