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2002 pontiac sunfire 2.2.changed the input speed sensor cause speedometer wasn't working and shifting gears. worked for a week. Now speedometer isn't working and worse. won't shift out of first gear.

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Have you checked the fluid level in this trans? not wanting to ask the obvious, This would be the 1st thing to check. Then make sure your connections/plugs are securely plugged in. Also its a very good idea to always replace parts from dealer not the cheapest parts house in town.

Posted on Apr 10, 2015

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Posted on Apr 10, 2015

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1 Answer

What does the input sensor on your transmisson of a Pontiac G5 se 2007 do


The speedometer not working wouldn't be caused by an input sensor . The VSS - vehicle speed sensor is a direct input to the PCM , the PCM shares is info over the GMLAN data bus.
Speedometer
The instrument panel cluster (IPC) displays the vehicle speed based on GMLAN serial data message from the body control module (BCM). The BCM receives vehicle speed data from the powertrain control module (PCM)/engine control module (ECM) via the GMLAN serial data circuit. The speedometer will default to 0 km/h (0 mph) if:
?€¢
The PCM/ECM detects a malfunction in the vehicle speed sensor circuit.


?€¢
The BCM detects a loss of GMLAN communications with the PCM/ECM.


?€¢
The IPC detects a loss of GMLAN communications with the BCM.


The only way to diagnose these problems is with a factory scan tool , this will check inputs an outputs at the PCM an BCM to the instrument cluster . This avoids guessing an playing the parts game. Your best bet would be to take your vehicle to a qualified repair shop .
Same thing with trans not shifting out of first gear , could be a shift solenoid ! Does it shift manually , moving gear selector through the gears ?

Jul 18, 2016 | 2007 Pontiac G5

1 Answer

Replaced input and output speed sensors for erratic speedometer. Now the speedometer remains at 0. Anyone have a suggestion on what else could be wrong?


input and out put speed sensors tell the TCM and the ECM the difference between engine rpms and transmission input roms so that the correct gear ratio can be selected
A speedo sensor reads the out put shaft (drive line ) shaft and refers to road speed for speed and odometer readings and to calculate the fuel consumption rate
it is possible that you have replaced the wrong sensor
Talk with an accredited transmission specialist shop and have the problem diagnosed

Aug 10, 2015 | 2003 Dodge Neon

1 Answer

Won't shift out of 1st. I have already replaced the input and output speed sensors as well as the shift solenoid. Still wont shift out of 1st and speedometer still wont work but tack does.


your input output speed sensors check voltage at sensor check plug see if you have voted and ground and put more than likely there's no voltage or no gtound

Mar 03, 2015 | 2002 Dodge Neon

1 Answer

Transmission shifts hard


You don't give me much information to work with. However, 1st, look at the engine mounts. You may have a broken mount. This will make it feel like the transmission is shifting hard. Other than that, there is only a few things that will cause this. The speed sensor tells the computer when to shift the shift solenoids. It may not be "seeing" a quality signal. If this is the case, the speedometer will be bouncing too. Last idea is that it is skipping a gear. Starts in 1st, should go to 2nd at about 10 MPH. 3rd at 25 to 30 MPH. And, if you have a Overdrive transmission, it should go into overdrive at around 45 to 55 MPH. If it is skipping 2nd, it will engage 3rd at a high engine speed, and will feel like a sudden slam into gear. If this is true, your transmission needs some work. Hope this all helps. Good Luck.

Jun 19, 2014 | 2002 Pontiac Sunfire

1 Answer

Can low transmission fluid cause the speedometer to not work and automatic transmission to not change gears


Adjust your TV cable by the trottle cable. Had same problem, changed fluid and filter then wouldnt shift. adjusted the cable, shifts great now.

Jul 14, 2012 | 2001 Pontiac Sunfire

1 Answer

My1998 toyota tacoma,while driving it the transmission started slipping. I pulled over shut it of then cranked it back up and it never would shift out of first gear and the speedometer wasn't working.....


Well, since the transmission control module uses input from the vehicle speed sensor to know when to shift gears, and the speedometer also uses the signal from the vehicle speed sensor to know what speed to display on your instrument cluster, I would say that there is a pretty good chance that they are related.

May 28, 2012 | 1998 Toyota Tacoma

1 Answer

Speedometor stopped working?? for 98 sunfire


there could be a trans or speed sensor problem. I dont know about the light reminder ?? I would have a trans shop check it first.

Oct 02, 2009 | 1998 Pontiac Sunfire

1 Answer

Runs but not change gears


if the speedo works sensors ok what trans in car 3t40 or 4t40e can you shift it manually or will it finally shift at red line

Aug 29, 2009 | 1997 Pontiac Sunfire

2 Answers

2000 strattus stuck in 2nd gear


had a 02 that locked into 2nd (break down mode) and had to get shift kit installed. was told the acc plate is the problem

Jun 14, 2009 | 2000 Dodge Stratus

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