Speedometer runs too fast - Toyota Nation Forum : Toyota Car and Truck Forums

3rd & 4th Generation (1992–1996 & 1997–2001) Toyota Camry Discussion for years: 1992-1996 & 1997-2001 Topics of discussion range from fuel economy, safety, modifications, performance all involving America's favorite family car, the Toyota Camry.

LinkBack Thread Tools Display Modes
post #1 of 3 Old 07-22-2007, 09:01 PM Thread Starter
New TN User
Join Date: Jul 2007
Location: south carolina
Posts: 15
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Thanks: 0
Thanked 0 Times in 0 Posts
iTrader Score: 0 reviews
(Thread Starter)
3rd Generation Speedometer runs too fast

My 94 Camry speedometer readout seems to indicate a higher speed than actual. At one time while stopped, the speedometer read 5 mph, and at another time 15 mph. While actually moving, maybe at 35 mph, the speedometer reads around 50 mph.

Any idea what might be the problem.

Also interested in the technology. Is this a magnetic pick-up or hall effect type sensor on a toothed gear, or some other technology.

yelkenli is offline  
Sponsored Links
post #2 of 3 Old 07-22-2007, 10:57 PM
TN Post Wh*re
Join Date: Jun 2006
Location: PNW
Posts: 6,403
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 2 Post(s)
Thanks: 0
Thanked 13 Times in 12 Posts
Supreme Member
iTrader Score: 0 reviews
The differential has a speed sensor installed on the top. The sensor appears to generate an alternating signal via a rotating magnetic ring (much like an alternator at four cycles per rev of its shaft). The signal goes to the instrument cluster where it is reshaped to a square wave and sent to the ECU.

Last edited by toyomoho; 07-22-2007 at 11:16 PM.
toyomoho is offline  
post #3 of 3 Old 07-23-2007, 12:38 AM
Senior TN Member
dc_98_cam's Avatar
Join Date: Mar 2007
Location: Dallas, TX
Posts: 2,655
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 58 Post(s)
Thanks: 13
Thanked 201 Times in 199 Posts
iTrader Score: 0 reviews
You might check the connection where the speed sensor plugs in .... near the differential, probably. Just disconnect .... spray with electrical contact cleaner, reassemble. Also, inspect the wires in the vicinity for any signs of frayed insulation, or anything unusual.

98 Camry LE, 2.2L, automatic
54k miles, drop in K&N A/F, ... timing belt, water pump, NSS
dc_98_cam is offline  
Sponsored Links

  Toyota Nation Forum : Toyota Car and Truck Forums > Toyota Passenger and Sports Car Forums > Camry and Solara Forum > 3rd & 4th Generation (1992–1996 & 1997–2001)


Quick Reply

Register Now

In order to be able to post messages on the Toyota Nation Forum : Toyota Car and Truck Forums forums, you must first register.
Please enter your desired user name, your email address and other required details in the form below.

User Name:
Please enter a password for your user account. Note that passwords are case-sensitive.


Confirm Password:
Email Address
Please enter a valid email address for yourself.

Email Address:


Human Verification

In order to verify that you are a human and not a spam bot, please enter the answer into the following box below based on the instructions contained in the graphic.

User Tag List

Thread Tools
Show Printable Version Show Printable Version
Email this Page Email this Page
Display Modes
Linear Mode Linear Mode

Posting Rules  
You may post new threads
You may post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are On
Pingbacks are On
Refbacks are On

For the best viewing experience please update your browser to Google Chrome