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07-02-2008, 04:07 PM | #1 | |
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1999 Ford Taurus - Speedometer drops to zero and trouble shifting
I have a 1999 Ford Taurus.
It runs fine for a while then all of a sudden the speedomoter drops to zero and the car has trouble shifting from low gear. I first noticed this problem in Staten Island, NY traffic. Entering Staten Island the traffic always comes to a virtual stand still. While crawling, the speedomoter all of a sudden shut off. The car continued on fine however, I was even able to drive at full speed and after a little while of full speed driving, the speedometer even showed up again! But the problem I guess has worsened with lack of attention, and now the speedometer shutoff is coupled with a difficulty or inability of the car to progress from low gear and therefore a cap on my speed (20 mph maybe? I don't want to over rev the engine, thankfully when this has happened I'm usually within coasting distance of my destination as it takes a little while before it becomes a problem. If the car sits for an hour or so, it will start back fine with the speedometer on and re-do the same process of eventually blanking out again and not shifting. Anyone know what the problem is, and if so, how much would it cost to fix? thanks! |
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07-02-2008, 06:19 PM | #2 | |
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Re: 1999 Ford Taurus - Speedometer drops to zero and trouble shifting
Is your check engine light on?
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07-02-2008, 06:20 PM | #3 | |
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Re: 1999 Ford Taurus - Speedometer drops to zero and trouble shifting
It sounds like you have a problem with the vehicle speed sensor. You can probably find details on location and how to replace by searching this forum for keyword "VSS."
-Rod |
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07-02-2008, 06:23 PM | #4 | ||
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Re: 1999 Ford Taurus - Speedometer drops to zero and trouble shifting
Quote:
Rod, Thats what I think as well, and to be honest with you I'm not going to pay $95 to bring it to ford so they can confirm it for me only to tell me that they are going to charge me another $200 to replace it when Autozone is selling a replacement part for $15.99?! Does this sound right? I ran a search and found how to locate it but to be honest with you I just went outside and couldn't find it. does anyone have a diagram that could help me? Would it help if i took a picture of the area of interest and maybe someone could circle where i should be looking for it? Thanks |
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07-02-2008, 06:29 PM | #5 | |
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Re: 1999 Ford Taurus - Speedometer drops to zero and trouble shifting
Though it should be noted, I also seem to be having a likely unrelated problem? Where turning the A/C on results in a bit of what feels like a grind on the motor resulting in the instinctual turning off of the A/C to prevent the car from stalling
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07-02-2008, 10:08 PM | #6 | ||
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Re: 1999 Ford Taurus - Speedometer drops to zero and trouble shifting
Quote:
-Rod |
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07-02-2008, 10:12 PM | #7 | |
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Re: 1999 Ford Taurus - Speedometer drops to zero and trouble shifting
The vehicle speed sensor will have two wires going to it, a Pink/Orange and a gray/black wire. It is located on the transaxle in the rear center location of the engine compartment. Since you didn't mention which engine you have, I'm trusting it's the 12V Vulcan engine.
-Rod |
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07-02-2008, 11:28 PM | #8 | ||
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Re: 1999 Ford Taurus - Speedometer drops to zero and trouble shifting
Quote:
He said theres two types for a 1999 Taurus, a "AXN" and "AXS" So I crawled under the car, and sure enough, the only thing I could find was the letters "AXOD" I took a bunch of pictures and I'm about to "Count the Bolts" to try to pinpoint which one it is. Incredible that I'm sitting here counting bolts on a photograph because theres no way to figure out which type of transmission I have otherwise. I even pulled up the VIN and the only thing it listed was the generic type not the specific name. Apparently there is a different speed sensor depending on the transmission type. And when I count the bolts I keep getting "16" I was told the AXS would have 17 and the AXN would have 19? This is wonderful! Here is the picture, maybe I'm missing a bolt? Its dark out. I'm assuming I didn't miss THREE bolts so surely its the AXS then? http://race3wide.com/pan.png Actually, oging through my other pictures I think that one end is squared off so the bolt that appears to be in both the far left of the far right photo and far right of the middle photo is NOT a duplicate, so that would make the count 17, and assumingly an AXS. I'm just confused because it says the old name of AXS was AXOD-E and the old name of AXN was AXOD As for the back center, this is what I see. Do you see the VSS? Is this even the right place to be looking? http://race3wide.com/back.jpg As for the A/C, when I turn the A/C on the car begins to sound as if there is a squeky belt and perhaps a slight vibration. I turn the A/C off immediately so I don't experience it for long. It is isolated to the moment I turn the A/C on, and ends the exact second I shut the A/C off. It has never occured at anypoint when the A/C was off, and occurs every single time the A/C is turned on. I did notice this at the start of summer but never happened before this year. Last edited by Vilita; 07-03-2008 at 12:04 AM. |
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07-03-2008, 06:44 AM | #9 | |
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Re: 1999 Ford Taurus - Speedometer drops to zero and trouble shifting
My purpose for asking which engine you have is because I can pull up the electrical wiring diagram for the particular engine, then use the component locator that way. Going the route of the transmission strangely did not list the VSS for me.
I have since found the VSS section based off of transmission since you didn't provide the engine info, but it doesn't show physical location. For the AX4N transmission it says you need to get to it from underneath, after you remove the dual converter y-pipe and VSS shield. There's also 1 retaining bolt that holds the VSS into the transaxle. It appears that if you have the AX4N transaxle, the transmission pan will say AX4N where yours shows AXOD. The AX4N has 19 pan bolts. The long straight end of the pan will have 4 pan bolts. The AX4S transmission has 17 pan bolts according to the factory service manual. The instructions to remove the VSS from the AX4S are similar to the AX4N, but the VSS appears to mount horizontally with respect to the transaxle housing rather than vertically for the AX4N. It appears to be towards the end of the transaxle housing which would place it near the center of the vehicle. The long straight side of the pan will have 3 bolts. -Rod |
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07-03-2008, 12:43 PM | #10 | |
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Re: 1999 Ford Taurus - Speedometer drops to zero and trouble shifting
The only thing it says on the engine is '3.0 V6'
I couldn't find anything else bar a sticker on the side that said 'DR', or anything further about the engine. The guy at Autozone also asked me about the engine, but then said it "didn't matter" the only thing it depended on was the transmisison |
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07-03-2008, 02:23 PM | #11 | |
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Re: 1999 Ford Taurus - Speedometer drops to zero and trouble shifting
Just go to your local Ford dealer and give the guy at the parts counter your vin# and ask him for a build sheet.
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07-03-2008, 02:39 PM | #12 | ||
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Re: 1999 Ford Taurus - Speedometer drops to zero and trouble shifting
Quote:
The flat side has 3 bolts and I counted about 16 So I'm fairly sure it has to be the AXS. |
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07-03-2008, 02:51 PM | #13 | |
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Re: 1999 Ford Taurus - Speedometer drops to zero and trouble shifting
Well thats BS! Go to a different dealer then! The vin# provides every detail about your vehicle down to the lug nuts.
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07-24-2008, 02:05 PM | #14 | ||
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Re: 1999 Ford Taurus - Speedometer drops to zero and trouble shifting
Quote:
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07-24-2008, 02:07 PM | #15 | |
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Re: 1999 Ford Taurus - Speedometer drops to zero and trouble shifting
Oh Yes AXOD The OD Is Overdrive...fords Gor to love em LOL
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