Back to Rust Bucket This week. I hope that the project starts moving again very soon.
If you read through the past 17 pages, you will know that the two main things that are holding the project:
1- the knocking issue.
2- the overheating issue.
I came to believe that the second issue is the cause of the first. the engine is basically running lean, and that is why it runs hotter. To investigate this in a more scientific way. I decided to install a wide band sensor.
Having said that, I hate installing gauges and I want to keep my truck as stock looking as possible. Install an AFR now, air tank pressure later, few other gauges after than, and I will end up with a interior of a boy racer!
Therefore, I decided to only install a single gauge. That single gauge should give me all current and future information I need. I shopped around, placed some orders, and this is what I received Yesterday.
After a brief unboxing, it looks like this:
As you can see, I ordered PLX DM-100 and could of sensor modules with it.
The main unit reads directly from the OBD II. This allow me to read some useful information out of the engine's PCM. Things like that exact engine temperature, trims, error codes and many more will be easily accessible.
Having said that, the PCM can only support Narrow band data. Therefore I bought this:
The sensor will provide the DM-100 with Wide Band AFR information.
One additional thing I bought was an SM-FluidPressure sensor module.
why do I need that ? We will see later!