SOURCE: Crankshaft Position Sensor
the dual crankshaft position sensor is secured in an aluminum mounting bracket and bolted to the left side of the timing chain cover, partially behind the crankshaft balancer, hope this helps get back to me if you need mre help. please rate my fix as i strive to be the best
SOURCE: 1996 buick century, I had a tune up and egr valve
Have an auto parts store check for the code. It is possible that you have a bad O2 sensor or your catalytic converter is clogged.
SOURCE: Cylinder location for buick 3.8 1996 LeSabre
http://autorepair.about.com/library/firing_orders/bl-fo-5790.htm
I don't usually copy and paste stuff, but this is an exception, It would be tough to explain the order. check it out.
Testimonial: "Thanks. My early 20's daughter was certain she had connected new spark plug wires correctly, but I hadn't checked her work. I had ASSUMED the cylinder # location you gave, but hadn't yet checked the wires. She had reversed the plug wires to cylinders 2 and 4."
SOURCE: code p1406 valve pintle position open
Unless you use a scan tool to clear the fault, it will not go away by itself until 40 consecutive warm up cycles have been completed without a fault. You can go to Autozone and they will clear the alarm for you. You can also clear it by disconnecting the PCM ( powertrain control module ) battery feed.
If the alarm returns after they've cleared it, the problem still exists. If the old EGR valve showed signs of excessive heat on it, check the exhaust system for blockage. The catalytic converter may be blocked.
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