1988 Buick Lesabre Repair Question
Mileage: No information provided.
1988 Buick Lesabre code 43
hello, i keep getting a code 43 on this buick. i have looked at a Motor manual and it says that it is either the esc or the knock sensor or the wiring. well, i cant find the knock sensor cause the book says its under the tps and i have looked and it is not, where is the knock sensor so i can check it for low voltage? i guess that is my first step to figuring out what is wrong... thanks dave.
Asked by toolmasterdaveAnswer
See below for a 3.8L
For 3800 its on lower right corner of engine block
i wish this were the picture of my engine but its not, its close, but there is no knock sensor there. i did find what i think is a knock sensor under the rear of the motor on the pass. side block, close to the pulleys and close to the oil press sensor. it has one wire that has a long prong going into it and its hard to see from the top of the engine. is it possible that this could be the knock sensor? i think it has a dark green wire.
what is your 8th number or letter in your vin #
it may have 2 knock sensors. also is this a limited or custom or standard lesabre
my picture shows it under the exhaust manifold in the front head for vin k and Vin L
in the head by the firewall for vin 1 and vin c
and vin J is where razzy said