jcooper2

93 LS400 Check engine Light is on, car idles fine but when reaved up to a high RPM it gets a little rough, OBD2 gives an RPM Sensor Code. Should I change the sensor and if so where do I find it?
Any help would be greatly appreciated.

Jesse

mikes7ke

iTrader: (1)

OBD2? 93? I'm a little confused.

jcooper2

Yes sir, its the code reader which I used ( Innova OBD2 Reader) it does work on the 93.

PureDrifter

iTrader: (10)

great, your code reader is reading an OBDI code (no OBDII on the LS til 95 (full compat in '96)). just get a paper clip and do the lexls.com code reading method to get a NUMBER for your CEL.

bauceLS400

iTrader: (2)

My 91 had the same problem. There was a code reading for the rpm speed sensor. The driver side Rpm speed sensor was cut by one of the pulley belts. there are two rpm speed sensors and they are connected to the distributor. I went to the junkyard and replaced mines yesterday. the check engine turned right off.

http://www.lexls.com/tutorials/ignit...tor_rotor.html

its connected to the silver bracket that goes under the distributor rotor. Best of luck.

jcooper2

Thanks for that info, very much appreciated.