what is this for?
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5th Gear
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what is this for?
I have an 89 corvette. it has a tuned port injection motor. On the left side of the engine down near the spark plugs, there is an electrical connector. The clips on it are broken so I wanted to replace it but don't know what it is called or what it is for?
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From the FSM
Last edited by WVZR-1; Apr 23, 2017 at 10:26 AM.
Thread Starter
5th Gear
Joined: Apr 2017
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It is in between and just above plugs 1 and 3. I just started the car and let it run until the fan kicked in, then shut it off pulled the connector off and started the car again, the fan started right up with the car? I don't want to sound stupid but The only fan I have is the one between the rad and the engine.
Last edited by corvette cruisin; Apr 23, 2017 at 10:26 AM.
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There's 2 fans, one behind radiator and AUX if the car has it in front of the cooling module. If the fan you saw running was "behind" the radiator (PRIMARY) that's controlled by the ECM, unless it's been modified by a previous owner. Wasn't a stupid question. Have you checked in front of for a fan assembly?
Last edited by WVZR-1; Apr 23, 2017 at 10:30 AM.
Thread Starter
5th Gear
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If your car has a AUX FAN in front of the condenser/radiator then it's the sender/switch for AUX FAN control. Switch/sender would be between #1 and #3 spark plugs.
From the FSM
Attachment 48086308
From the FSM
Attachment 48086308
Thread Starter
5th Gear
Joined: Apr 2017
Posts: 5
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There's 2 fans, one behind radiator and AUX if the car has it in front of the cooling module. If the fan you saw running was "behind" the radiator (PRIMARY) that's controlled by the ECM, unless it's been modified by a previous owner. Wasn't a stupid question. Have you checked in front of for a fan assembly?
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Where are you located? You mentioned "bonnet" and that's a term not often referenced here in the US unless "imports" are in the discussion.
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5th Gear
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It does BUT leave it "as is" until you determine you have or don't have the AUX FAN and also until you're prepared to do what it takes to repair. I'd say it presents no "immediate need" to mess with.
Where are you located? You mentioned "bonnet" and that's a term not often referenced here in the US unless "imports" are in the discussion.
Where are you located? You mentioned "bonnet" and that's a term not often referenced here in the US unless "imports" are in the discussion.
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Team Owner
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There should be a SPID label like this on the back-side of the console door. I'd suggest if the car is a recent purchase you inventory the car using the RPO codes as a reference. This one isn't an '89 but can be used as an example.
Attachment 48086315
This isn't the RPO reference I use but it appears to be fairly complete. I've never tried to validate this one in particular. The one I use does all GM including medium and heavy trucks and is more difficult to sort.
http://www.corvette-c4.eu/c4oc.pdf
Attachment 48086315
This isn't the RPO reference I use but it appears to be fairly complete. I've never tried to validate this one in particular. The one I use does all GM including medium and heavy trucks and is more difficult to sort.
http://www.corvette-c4.eu/c4oc.pdf
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wvzr1 has got you covered here, to see if you have the auxiliary fan, parked the car in such a way that you get your head under the front bumper and look up and try to find a fan in front of the radiator.
follow wvzr1 to the T. many of Bubba has messed with the electrical wiring on c4 cooling systems and it's possible you're main and auxiliary fan have been spliced together. wvzr1 pointed that out on my car, that's how i know.
hello from calgary! good luck.
Last edited by VikingTrad3r; Apr 23, 2017 at 01:14 PM.
