How does the PCM control the malfunction indicator lamp?
How does the PCM control the malfunction indicator lamp?
The PCM controls the lamp by monitoring the ground circuit of the lamp and checks the voltage on that ground circuit. Note: It is normal operation for the malfunction indicator lamp to illuminate for a few seconds and then go out when the ignition is turned on or the car is started.
Why is my Mil indicator light not working?
Malfunction indicator lamp NOT illuminating when it should (check engine light or service engine soon light) MIL being illuminated all the time Potential causes may include: MIL wiring problem (short or open electrical condition) Poor electrical connection at the bulb/cluster/PCM
What causes a Mil control lamp to malfunction?
Potential causes may include: Burned out MIL bulb/LED MIL wiring problem (short or open electrical condition) Poor electrical connection at the bulb/cluster/PCM Failed/faulty PCM
When did engine power reduced message come on?
About 8 months ago (March 2013) I had about 52,000 miles on my truck at the time. My “Service Stabilitrack”, “Service Traction Control” and a “Engine Power Is Reduced” messaged along with both SES and TCS lights on. I had really slow acceleration only about a 40 mph top speed, engine Idled rough, trans shifted harsh.
What was the lifter failure on GM 5.3?
The lifter failure was limited to just a collapse of the internal lifter AFM mechanism (cylinder deactivation assembly inside the lifter) and did not damage the cam lobe or block. We could have just replaced the lifters with a new set and slapped the heads back on….but what fun is that?
What are the heads on a GM 5.3?
The heads that come on these later model 4.8 / 5.3 are the same heads used on the LS2 and LS6 motors. You can easily make power with these babies. Heads were decked .025 to bring the compression up, and to also avoid the need for .025 longer pushrods due to the smaller base circle of the new camshaft.
Why did my GM 5.3 lifter go Kaboom?
Motor always ran good and didn’t use any oil, until the lifter went kaboom. We tore it down to inspect. The lifter failure was limited to just a collapse of the internal lifter AFM mechanism (cylinder deactivation assembly inside the lifter) and did not damage the cam lobe or block.
Can a GM 5.3 use a non AFM lifter?
These trays are also new, as the originals from the AFM lifters do not work with the “standard non AFM” style lifters. All traces of cylinder deactivation are now gone. We took the opportunity to freshen up the cylinder heads while they were off.
