I'm Confused need Help
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Instructor
Joined: Oct 2019
Posts: 139
Likes: 9
From: New York
I'm Confused need Help
I'm confused I took my throttle body off to rebuild it this weekend and I noticed there are two sensors in the front of the intake. I have on order the right sensor and from what I read that the other sensor was used in the Z51 package and had an axillary fan, but there is no extra fan on my car. I'd like to add the fan at some point. I want to replace now since the throttle body is off, my question what is the sensor called so I can look for it..thanks
- 1986 Original Owner -
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Safety Car
Joined: May 2001
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From: Fairfax Virginia
The auxiliary fan is a Pusher fan mounted in front of the radiator. The sensor it uses is mounted between Cylinder #1 and #3. It is a single wire sensor that is mounted in the cylinder head. I have the same sensor on my 1988 C4, when the sensor/switch is activated it grounds the wire and that turns the auxiliary fan on. I put a switch under the dash that will manually activate the fan when desired. During the warmer months I activate it upon startup and it helps the car not get hot quickly.
Thread Starter
Instructor
Joined: Oct 2019
Posts: 139
Likes: 9
From: New York
Yes thank you I replaced that sensor, but I dont have that fan. Never knew there was on there. Must have been taken out. I'll need to trace the wires back and install a fan assembly. I just got the car and there have been so much Incorrect work done on it and want to bring it back up to specs.
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- 1986 Original Owner -
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From: North Yorkshire, England
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On your ‘85 that is the Coolant Temp Sensor for your gauge. You have to be careful with information offered here as many folks feel the need to reply to every post whether they know or not. Others are genuinely trying to help, but are unaware that there were many changes model year to model year and often within the same model year. Folks trying to offer help seem to be completely oblivious to the fact that incorrect information is worse than no information when you take that incorrect information and waste many hours of troubleshooting based on it. You can also spend money on parts or work that you don’t need based on the incorrect information. So please, take every post with a grain of salt.
Last edited by Ray Quayle; Dec 7, 2020 at 11:20 AM.
