What causes a no start on a Buick 3800?
But if one coil is bad, it may be a good idea to replace all three on a high mileage engine to prevent similar problems down the road. There are a variety of possible causes for a no start, but one of the most common with the 3800 engine is a bad crankshaft position (CKP) sensor or a bad ignition control module (ICM).
Where is the crank sensor on a Buick 3800?
The sensor is located on the front of the engine under a cover behind the crankshaft pulley. If the crank sensor tests good, the problem is likely the ignition control module, a fault in the ignition wiring harness, or possibly a fault in the engine computer.
What are the symptoms of a bad crankshaft position sensor?
Cost of Replacing a Bad or Failing Crankshaft Position Sensor. Common signs of a faulty crankshaft position sensor include issues starting the vehicle, intermittent stalling, and the Check Engine Light coming on. Our certified technicians can come to you and diagnose the problem.
What is the misfire code on a Buick 3800?
The Check Engine light should be on, and there should be one or more misfire codes for the cylinders that are misfiring. The last digit on a misfire code indicates the cylinder number. A code P0302, for example, would tell you cylinder #2 is misfiring. Chances are the misfire is due to a weak ignition coil.
But if one coil is bad, it may be a good idea to replace all three on a high mileage engine to prevent similar problems down the road. There are a variety of possible causes for a no start, but one of the most common with the 3800 engine is a bad crankshaft position (CKP) sensor or a bad ignition control module (ICM).
When did the GM 3800 Series 2 engine come out?
The GM 3800 Series II engine, introduced in 1995, is quite a different engine from its predecessor, the Series I engine. While the stroke for the 3.8L engine remained at 3.4” (86 mm), and the bore remained at 3.8” (97 mm), the engine architecture changed dramatically.
The sensor is located on the front of the engine under a cover behind the crankshaft pulley. If the crank sensor tests good, the problem is likely the ignition control module, a fault in the ignition wiring harness, or possibly a fault in the engine computer.
When did GM change the crankshaft balancer on the 3800?
Use the following procedure to properly service the crankshaft balancer on these engines. According to GM, there has been a running design change in the crankshaft balancer. This change affects 3800 engines built late in the 1995 model year (L27 and L36) and all of 1996 model year (L36 and L67).