Question about 1994 Toyota Corolla

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My 1998 Toyota Camry also has an erratic speedometer which jumps down to a lower or zero mph which after a couple of seconds causes the transmission to downshift and the engine to rev. Diagnostics have not detected a sensor problem. A transmission specialist couldn't find the problem. A shop which specializes in electrical couldn't find the problem. Help!

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  • Toyota Master
  • 1,983 Answers

Check all the wiring from the vehicle speed sensor (VSS) to the ECM, including all connectors. It seems that there may be an intermittent open (or short) causing the ECM to sense the vehicle slowing down/stopping.

Posted on Sep 27, 2017

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6 Suggested Answers

6ya6ya
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Posted on Jan 02, 2017

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sleepygsx
  • 98 Answers

SOURCE: 2003 Camry Speedometer reads 150 mph constantly.

i would disconnect the battery again let it sit for 15 minutes, i changed an alternator and jumped the car then started driving and that happened to me, 20 minutes of driving and the computer finally kicked in and started working again. good luck

Posted on Sep 13, 2008

  • 318 Answers

SOURCE: 1998 toyota camry , 2 codes, p0171. + p1133

P0171 lean code. Clean the maf sensor. A f sensor is inthe exhaust pipe.

Posted on Oct 27, 2009

dj_relly999
  • 4070 Answers

SOURCE: camry 2002 speed sensor

try replacing the fuel cervo... this maybe the cause of faulty run. a backyard auto technician can replace this without charging you much. hope this helps

Posted on Feb 02, 2010

  • 87 Answers

SOURCE: 1995 camry RPMS too high at 50+ mph, no downshift

check the fluid level if that is good then i would say you will prob need a rebuild

Posted on Feb 25, 2010

manuelleiva
  • 97 Answers

SOURCE: '93 corolla,4 spd.auto trans.speedometer reads10

well what you want to do is change the trans control solenoid or the trans modulator.i know this car has a trans modulator but im not sure that it has a trans solenoid.either way it's a lot cheaper than changing the trans.hope this info helps. take care and good luck, manny

Posted on Apr 11, 2010

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2003 Camry Speedometer reads 150 mph constantly.


i would disconnect the battery again let it sit for 15 minutes, i changed an alternator and jumped the car then started driving and that happened to me, 20 minutes of driving and the computer finally kicked in and started working again. good luck

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