I'm not familiar with that exact model off-hand, most if not all newer computer-controlled vehicles have the idle controlled by the computer. I would check for a vacuum leak as that could potentially cause idle problems. There are many reasons though....
I'm not familiar with that exact model off-hand, most if not all newer computer-controlled vehicles have the idle controlled by the computer. I would check for a vacuum leak as that could potentially cause idle problems. There are many reasons though....
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I had the same problem. It was the idle air control valve. It sits on top of the intake just downstream from the throttle. There's a valve rod inside that gets worn over time and starts to stick. If that's what is causing your problem, you need to replace the unit.
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idle is preset at the factory .. but some cars are equipped with an air conditioner adjuster . which will actually speed up the engine when you turn on the AC .. look at it when you start the AC and you will see it is adjustable to speed up the engine some ... thanks Jerry
I have the manuel for the fuses. It`s for a 1992 mercury topaz. If you haven`t found one yet, if you email me I can scan it and get it too you. my e-mail is [email protected]
It's located in the trunk on the drivers side. You should see a black and yellow sticker below a hole indicating that the fuel pump shut off switch is here. Even if your sticker has worn off, if it's a 92 topaz it most likely will be there in that hole. Shine a flashlight in it and you should see a black unit with a red button on top. Push the button down until it clicks in place. If the button is already down, your problem is something else.
1991-92 Mercury Topaz Stereo Wiring
Constant 12V+
Green/Yellow
Switched 12V+
Yellow/Black
Ground
Red/Black
Illumination
n/a
Dimmer
Blue/Red
Antenna
Right Front
Front Speakers
6 1/2" Doors
Left Front (+)
Orange/Green
Left Front (-)
Black/White
Right Front (+)
White/Green
Right Front (-)
Black/White
Rear Speakers
6" x 9" Rear Deck
Left Rear (+)
Pink/Green
Left Rear (-)
Pink/Blue
Right Rear (+)
Pink/Blue
Right Rear (-)
Green/Orange
I'm not familiar with that exact model off-hand, most if not all newer computer-controlled vehicles have the idle controlled by the computer. I would check for a vacuum leak as that could potentially cause idle problems. There are many reasons though....
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