Question about 2000 Mercury Grand Marquis
That's definitely is a short wire in the harness. You need to trace the wires in the harness and find the corroded wires.
Posted on Dec 15, 2014
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Posted on Jan 02, 2017
SOURCE: fuse keeps blowing
If fuse keeps blowing that means that there is a shortage on AC wiring or switch controlling the air conditioner.
Also an abnormal power draw from AC caused by an internal fault on AC can cause the fuse to blow.
Test wiring and switch with a voltmeter, the most common is that there is a short to ground between wiring and car body somewere.
Posted on Apr 29, 2009
Fuses nearly always blow because of a bad earth. The switch only needs to short for a moment and the fuse will blow.
See if you can find a replcement swtich from a local breaker's yard or ebay and go on from there.
Posted on Apr 13, 2009
SOURCE: fuel pump fuse blows
Check the fuel pump relay, i am not sure but i think there are two of them. Check the wire harness too, mice may have chewed in to the wires causing a shot in the system.
Good luck and hope this helps.
Posted on May 09, 2009
The heading says2000 taurus and 1999 taurus. I looked up the wiring for a 1999 taurus. Fuse #28 goes to the heated oxygen sensors and the canister vent solenoid. You have 2 oxygen sensors (green connectors)and 2 catalist monitors(blue connectors) that use this fuse for the heaters that are in the sensors. I would check these sensors to see if any of their wiring is shorted. I have seen in the past where oxygen sensor wiring would rub on a front drive axel and wear thru the wire insulation causing a short. You really need to look at all 4 sensors and their wiring closely for shorts. If they look ok then disconnect all of them and reconnect 1 by 1 until fuse blows again. Fuse #28 also powers the canister vent solenoid which is located under the trunk (under the car) in a black plastic housing (approx 1ft by 1ft). It is the only item with wires going to it. If you disconnect this and the fuse stops blowing then it is shorted. Also check the wiring to see if it rubs or is shorted anywhere.
Hope this helps
Posted on Apr 08, 2010
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