Q: Why did my 2006 Chrysler Pacifica jump 33,000 miles overnight

asked by on November 27, 2016

On Friday my Chrysler Pacifica was 53000 plus miles on it when I went to drive my car Saturday morning the odometer showed that there was 86000 plus miles on it I don't understand why it jumped up so many miles over night can you help me understand this please one other problem I'm also having is with my speedometer when I drive 30 miles an hour it tells me I'm going 50 are both these issues related thank you so much

My car has 86000 miles.
My car has an automatic transmission.

Speedometer is not working Inspection $94.99 - $114.99 Get a Quote

Hi there:

Unless somebody took your car for a worldwide joy-ride in one day (highly unlikely), both issues are most likely caused by a damaged transmission speed sensor (which does control both the odometer and speedometer on your Chrysler Pacifica). It is also possible that an electrical issue exists inside the ECU on your vehicle. To know for sure, it’s probably a good idea to have a mobile mechanic complete a speedometer is not working inspection so they can determine what’s causing both issues.

The statements expressed above are only for informational purposes and should be independently verified. Please see our terms of service for more details

Get an instant quote for your car

Our certified mechanics come to you ・Backed by 12-month, 12,000-mile guarantee・Fair and transparent pricing


Experienced Mechanic?

Earn up to $70/hr

What others are asking

Had to jumpstart car but battery new
Normally, the car's battery is the most common cause of no starts. With the battery being a year old, it will still need to be tested to rule it out. If the battery is found to be okay, the alternator...
P0320 code - 1999 Ford Ranger
Hi and thanks for contacting YourMechanic. What might have happened is that water from cleaning the engine may have gotten inside the engine. Check all of the intake hoses and be sure that the clamps are tight. Remove the air...
My car stutters after driving it for a few minutes - 2002 Toyota
This may also be caused by what is called the fuel pressure regulator. This is a unit that helps to maintain the fuel pressure at the proper level. When this is not working properly, the fuel pump may be pumping...
My car sounds really loud when I crank it every morning
Hi there. Not sure what you mean by "extremely loud"; whether you have an exhaust leak (sounds like there is hole in the muffler), mechanical noises (cam actuators have leaked down, and are noisy until oil pressure comes up), worn...
My car is hesitating / jerking at speed intervals of 20 mph, 30 mph, 35 mph and 40 mph.
This may be a sign of a dirty or failing mass air flow sensor. The mass air flow sensor is a unit in the intake system that monitors air intake as it is mixed with fuel prior to being injected...
The ABS light came on dashboard
Hello, The ABS light refers to your anti-lock braking system which is controlled by a module and wheel speed sensors at each of the four wheels. This may be an issue of a faulty ABS control module or possibly faulty...
When I'm driving the green key flash on it the it shuts down on me and it locked in park what can I do to fix it
Hello there. In order to help you with diagnosing this issue, we need to know your vehicle's year, make and model; as different vehicles have warning lights that are triggered by individual component failures. Thanks.
White smoke from exhaust cold start up
Hi There, Generally, a white or gray colored smoke (https://www.yourmechanic.com/services/smoke-from-engine-or-exhaust-inspection) is a sign of a potential blown head gasket. A blown head gasket can cause a bit of a vapor to be produced due to the coolant being leaked into...
I bought a brand new alternator and my car still wouldn’t start
Hi Breona. Thanks for contacting us tonight. The fact that your boyfriend was able to 'fix' the car temporarily by 'messing with the wires' indicates that the root issue is likely poor electrical connections as opposed to a mechanical problem...

Related articles

A Buyer’s Guide to the 2012 Chrysler 200
In In 2011, Chrysler completely overhauled, updated, and remodeled their entire line, including the introduction of the new Chrysler 200. This reimagining of the old, boring Dodge Sebring sedan was already an exciting move for Chrysler, and the 2012 Chrysler...
The Best Used Cars to Buy If You’re a Caterer
If If you are in the catering business, you need a reliable vehicle that will provide you with what you need to transport your food, linens, and other supplies. Generally speaking, you're better off buying gently used, because you will...
How to Get Chrysler Dealership Certified
Chrysler car dealerships offer automotive technician jobs to mechanics who are certified through the MOPAR CAP (Career Automotive Program).