HELP ASAP IDLE PROBLEMS Electric Fan
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Joined: Mar 2005
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From: Georgia
HELP ASAP IDLE PROBLEMS Electric Fan
Ok help me out... I have a 1990 gtu s5 n/a. I adjusted my tps it is fine idles at 750 constant. That is until my electric fan kicks on. Then the engine revs up and down up and down until the fan turns off. I have an electric fan from a ford tauraus and and thermostat from advanced auto parts. It is the adjustable one for like 60 bux. anyways I followed the directions in the faq when I installed it. I hooked the power from the fan to a 6 pin green conector located near the battery. I made sure I put it on the black and yellow wire. It is the top row 2nd pin. Followed exactly instructions.
P.S. Alternater and redtop battery all tested out fine there. I also tested to make sure there wasn't a drain on the system.
P.S. Alternater and redtop battery all tested out fine there. I also tested to make sure there wasn't a drain on the system.
Last edited by tuffguyno1; Feb 10, 2007 at 04:47 PM.
Joined: Feb 2001
Posts: 29,798
Likes: 128
From: London, Ontario, Canada
Let me guess, you don't have your BAC valve?
Without the BAC, the engine cannot compensate for electrical loads. You need to reinstall the valve (or, crank your idle higher).
Without the BAC, the engine cannot compensate for electrical loads. You need to reinstall the valve (or, crank your idle higher).
HAILERS
Joined: May 2001
Posts: 20,563
Likes: 27
From: FORT WORTH, TEXAS,USA
Something does not ring true here. The only power wire in that GREEN six socket plug is colored BLACK/WHITE.
The YELLOW/BLACK is not a source of power.
Even if you do have it connected to the B/W wire, I'd be wary about that. That wire also connects to the ECU. Not good. If there is a large voltage drop from the fan running, it MIGHT cause the ECU to act funny. MIGHT.
In the past I've seen a low battery cause my car to *act funny*. So if it's not a BAC problem, then just for grins, install that fan power wire right at the batterys positive post and try again. If there is a large improvement, then you might consider another source of pwr for the fan.
Another thing would to monitor the battery voltage as the fan comes on. See if there is a large drop in voltage when the fan is running vs not running. An alternator with a diode whacked will not put out enough voltage when a large load is put on it. It might work just fine and dandy without the fan running but crummy with it running.
The YELLOW/BLACK is not a source of power.
Even if you do have it connected to the B/W wire, I'd be wary about that. That wire also connects to the ECU. Not good. If there is a large voltage drop from the fan running, it MIGHT cause the ECU to act funny. MIGHT.
In the past I've seen a low battery cause my car to *act funny*. So if it's not a BAC problem, then just for grins, install that fan power wire right at the batterys positive post and try again. If there is a large improvement, then you might consider another source of pwr for the fan.
Another thing would to monitor the battery voltage as the fan comes on. See if there is a large drop in voltage when the fan is running vs not running. An alternator with a diode whacked will not put out enough voltage when a large load is put on it. It might work just fine and dandy without the fan running but crummy with it running.
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