Question about 2002 Ford F-150

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Changed trans 02 f150 2wd 4.6 liter odo bouncing changed speed sensor scan shows sensor good truck not shifting properly trans sending wring signal

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  • Expert
  • 75 Answers

Get the computer flashed so it recognizes the new tranny.

Posted on Apr 16, 2015

  • conrad arriola Apr 16, 2015

    I have bring it to the shop to do that i'll post what happens after i do that

  • conrad arriola Apr 16, 2015

    Thank you for your help i hope it work

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6ya6ya
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Posted on Jan 02, 2017

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motor1258
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SOURCE: hard down shift

I've read article after article on Chrysler forums where anything other than Autopar ATF in their transmissions cause problems, erratic shifting, etc, including what your experiencing. The techs that deal with it daily through Chrysler/Dodge shops, say there is some properties or chemicals in Autopar fluid, that others just don't have, no matter what they say, and they have proven it, time after time, with symptoms that disappear, just by changing fluids to Autopar. My wife's relatives own one of the more respected & trusted repair shops in our area, and they swear by that rule too, because they've also experienced it in the past. I'm naturally assuming you know that your experienced enough to know how to install filter properly & what to watch for, so with that said, I hate to say it, but Mopar ATF4 is the one & only fluid for best results. P.S. I recently had my transmission with 260,000km. replaced at Ontario Reman, whom back when I was with Chrysler, was the sole supplier of rebuilt engines & transmissions for Chrysler. When I questioned them on the fluid in my new/rebuild they responded with same answer, Mopar ATF and nothing else. If you do some googling on it, you'll find many that went to quick lube or similar for same service only to experience shifting problems etc after. Switched back to autopar as advised & problems went away. Can't say 100% that's your problem, but if it were me, I'd change it.

Posted on Jan 11, 2009

emissionwiz
  • 76846 Answers

SOURCE: 1996 ford explorer overdrive transmission problem

Yes PCM (powertrain control module). is the standard name established by the EPA for all engine control computers, on Ford it also controls the trans shifting.

Posted on Jan 13, 2009

  • 132 Answers

SOURCE: 99 gmc no power when passing or climbing

It could be the cat. it sounds like this could be your problem

Posted on Feb 07, 2009

  • 1 Answer

SOURCE: 1996 saturn sl1 transmission slips in 3 and 4 gears.

The fluid and speed sensor did not really do anything to solve your slipping problem. If it slipped before it could be that there are chips/breaks in the teeth on the gears or it could be that the clutch is not connecting when it gets into higher gears. May need a new tranny or clutch.

Posted on Mar 31, 2009

centralvalle
  • 386 Answers

SOURCE: e300 1994 codes read p0720 and p0500 one is speed

try changing the drive shaft speed sensor, sounds like you have a malfunctioning drive shaft speed sensor, change sensor and reset codes and test... e 300 had this problem in 94 and 95 even when they were close to new with very low miles... please rate my help , thanks

Posted on Aug 05, 2009

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1 Answer

2000 GMC Jimmy 4×4 The ABS light is on, the speed odometer does not work, and it does shift out of 1st gear, if I manually put it into second gear then it will shift fine, it has a changed VSS


Did you have it check for DTC'S - diagnostic trouble codes ?
Speedometer
The speedometer is an analog gauge that is located in the instrument cluster. The PCM/VCM receives an analog input from the vehicle speed sensor and converts it to a digital signal containing 4,000 pulses per mile (PPM) for the instrument cluster.
The PCM/VCM sends this digital output (4,000 PPM) to the instrument cluster on a designated circuit. These pulses can be measured in Hertz (Hz) using a digital multimeter (DMM) on the AC scale. The PCM/VCM calibration is matched to the final drive and tire size of each vehicle. If the final drive or tire size is changed for any reason, the PCM/VCM must be updated in order to match the new final drive or tire size. If not, the signal will not be accurate for proper speedometer/odometer operation. An incorrect signal can affect the antilock brakes and the cruise control systems.
The speedometer system consists of the instrument cluster, vehicle speed sensor (VSS), PCM/VCM and related wiring. The VSS is a permanent magnet signal generator that sends an analog signal proportional to the propeller shaft speed to the PCM/VCM. The VSS mounts to the transmission tailshaft extension housing on 2-wheel drive (2WD) models and the transfer case output shaft housing on 4-wheel drive (4WD) models.
Repairs to the instrument cluster can only be performed by an authorized instrument cluster service center. DTC P0502 Vehicle Speed Sensor (VSS) Circuit Low Input and DTC P0503 Vehicle Speed Sensor (VSS) Circuit Intermittent in Automatic Transmission - 4L60-E
- DTC P0500 Vehicle Speed Sensor (VSS) Circuit in Engine Controls - 4.3L Important: If the instrument cluster is completely inoperative, refer to Instrument Cluster Inoperative .
Install a scan tool.
Raise the vehicles drive wheels. Refer to Lifting and Jacking the Vehicle in General Information.
Start the engine.
Place the transmission into drive for automatic transmission and third gear for manual transmission.
Compare the displayed vehicle speed on the Instrument Cluster with the monitored speed on the scan tool.
Does the vehicles speedometer and the scan tool both display 0 km/h (0 mph)? You really need a Factory scan tool or equivalent to check this . The VSS is an input to the PCM/VCM . engine computer . You can test with a DVOM - digital volt ohm meter , for signal to engine computer .
I know most people don't like hearing this , but I suggest you take it to a ASE certified repair facility .

Feb 21, 2016 | GMC Cars & Trucks

1 Answer

How to flash computer 02 f150 2wd 4.6 automatic trans changed trans odo bouncing not shifting properly changed speed sensor


You need to take to the dealer for that to be done , unless you have 6 grand to buy the tools !

Apr 18, 2015 | 2002 Ford F-150

1 Answer

Can a faulty speed sensor in a 96 dodge ram automatic make it only read 1st and 2rd gear


not likely, the speed sensor sends the info to the pcm and will affect gear change, though its highly unlikely that the speed sensor can make the pcm "read" first or second gear, speed sensor sends info to the pcm to help it decide when to shift gears/apply abs/ etc

Mar 30, 2013 | Cars & Trucks

3 Answers

98 Camry LE V6 Speedometer/Odometer and transmission shifting issue


if the speedo is not sending a speed the trans will go into back up mode and the trans will not shift normally check the speed sensor

Aug 28, 2012 | 1998 Toyota Camry

1 Answer

91 cherokee shifts fine at fist but after a minute or so it wont shift out of first gear. changed the output speed sensor but no change


Sounds like a bad out speed sensor.Are you sure you replaced the correct sensor?This trans(AW340)Has an output speed sensor and a vehicle speed sensor.The output speed sensor is located on the side of tail housing just next to where it bolts to transmission case.The vehicle speed sensor will be about midway of the tail housing or on the transfer case tail housing on the 4x4 models.It may be a good idea to have a tranny shop you trust run a diagnostic and see if you are getting output sensor signal to TCM( transmission control module behind glove box)and take a look at TPS (throttle position sensor)signal when it is hot to make sure you replace the correct part.I have seen bad TPS sensors on these jeep not affect engine drivability because the sensor is really two(one for trans and one for engine)thus the two plugs on the TPS sensor for the automatic Cherokee.Good Luck and let me know if I can help.

Mar 21, 2011 | 1991 Jeep Cherokee Limited

1 Answer

The Trans. don't shift up, I unplug the TPS and it shifts. Changed the TPS and it don't shift. Also changed the Speed sensor on trans.still don't shift


The first thing to do is have the computer scanned for codes, these codes will tell you what system is not operating correctly.

Jul 13, 2010 | 2002 Chevrolet Monte Carlo

1 Answer

Speed sensor on 2000 ford f150 4x4 triton 4.6


if this helps, please rate as fixya. thanks.

Vehicle Speed Sensor The vehicle speed sensor (VSS) (Figure 43) is a variable reluctance or Hall-effect sensor that generates a waveform with a frequency that is proportional to the speed of the vehicle. If the vehicle is moving at a relatively low velocity, the sensor produces a signal with a low frequency. As the vehicle velocity increases, the sensor generates a signal with a higher frequency. The PCM uses the frequency signal generated by the VSS (and other inputs) to control such parameters as fuel injection, ignition control, transmission/transaxle shift scheduling and torque converter clutch scheduling.


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For the 4R70W trans vehicles

Vehicle Speed Sensor (VSS)

The vehicle speed sensor (VSS) is model dependent. Possible sources of vehicle speed input are, anti-lock brake sensor (ABS), a gear-driven vehicle speed sensor (VSS), or the transmission output shaft speed (OSS) sensor. On 4x4 applications with a manual shift transfer case, the transfer case speed sensor is the source of vehicle speed. The VSS signal is either an AC signal whose frequency changes with vehicle speed, or an SCP data message depending on the source. Some vehicles have both. The vehicle speed signal is an input to various vehicle sub-systems such as the powertrain control module (PCM), instrument cluster (speedometer and odometer), speed control systems, etc. The vehicle speed source must be operational to enter output state control mode for diagnostics.

If you have a 4R100 trans, it is different.

Mar 12, 2009 | 2000 Ford F150 Flareside SuperCab

1 Answer

95 3 liter


Have a scan done on your car and have whoever scan the trans. computer. The trans. computer is detecting a problem with one of the sensors and puts the car into "limp in" mode. I positive that you don't need a new trans. It could be a 10 min. fix just a matter of unscrewing a sensor and screwing another one in. I've seen alot of problems with speed sensors, input, and output sensors. Have a scan done though because you don't want to just "throw" parts at it. Go to a shop that has an actual scanner and not a "code reader" like the part stores.

Jul 23, 2008 | 1995 Chrysler LeBaron

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