Question about 1989 Toyota Corolla 1.6
Output speed sensor usually located in transmission usually close to where axles go into transmission. The sensor can be identified by having 8 mm headed bolt that hold the sensor in. These speed sensors just don't quit one day. A wire is usually the culprit or debris on magnet of sensor or physically broken sensor. If speedometer intermittently starts working then its always a wire with bad connection.
Posted on May 16, 2014
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Posted on Jan 02, 2017
CHECK YOUR VECHICLE SPEED SENSOR WIRE FOR DAMAGE.OR THE MAGNET GEAR ON TRANSMISSION OUT PUT SHAFT IS BROKEN OR DAMAGE.IF THEY ARE GOOD YOUR PROBLEM IS IN THE DASH.BROKEN SPEEDOMETER.
Posted on Aug 16, 2009
This engine utilizes shims to set proper clearances, you will need a micrometer, valve clearance adjustment tool set for shimmed lifters,small magnetic arm, appropriate shim selecting charts (manufacturer will have this if you can get the nec. measurements).
Measure thickness of shims removed (using micrometer) and use this formula where T=Thickness of old shim; A=Valve clearance measured; N=Thickness of new shim required.
Intake valves: N = T + (A - 0.02 mm (0.008 in.)) Exh. valves: N = T + (A - 0.25 mm (0.010 in.))
Then you need to find shims as close as possible to the calculated values.
Valve clearances (cold) are as follows: Intake 0.15 - 0.25 mm (0.006 - 0.010 in.) Exhaust 0.20 - 0.30 mm (0.008 - 0.012 in.)
Note, if you are not familiar with precision measuring using a micrometer, this may be better left to a trained tech. These are high revving little power plants and you don't want a problem at 8K rpm.
Posted on Aug 06, 2009
SOURCE: Speedometer is erratic
It sounds like the core of your speedometer cable is rubbing the outer housing. The speedometer cable runs from the inst panel, thru the firewall, and onto the side of the transmission that faces the driver. This is not a hard job to do, but, when replacing the cable, take care to not break the ears off of the part that hooks on to the back of the speedometer.
Posted on Sep 16, 2009
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