Mechanics

LEXUS SC 400 SENSOR PROBLEM

1992 Lexus SC 400 • 1,350 miles

Replaced water pump. Car started but missed so hired mechanic to retime it now I have 12 volts to back side of distibotor but none to plug wires. Replaced rotors but no help. Took crank sensor to mechanic and he said testing ohms showed shoule be ok. Crank and cam sensors at least $80 apiece so can't just replace if not the problem. Thank you for your help.
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Postman69
November 5, 2012.




I would start with basics.

Compression test as it is an interference motor.

Fuel pressure and spark.

Do not throw parts at it till you know the failure

Roy

Compression was btween 180 to240 cranking for 10 to 15 seconds. Problem is I have no spark but do have voltage at the back side of distributor

Tiny
Postman69
Nov 5, 2012.
Then you may have a failed distributor assembly

Roy

Is it possible for both sides, to fail at the, same time since I have no spark on either
AD

Tiny
Postman69
Nov 5, 2012.
Check the crank sensor wiring an ensure the reluctor at crank sprocket is installed correctly.

KHLow2008
Nov 5, 2012.

AD