Bradly's advice is good. All I would suggest instead is to make an XY Scatter chart
instead of a column, line, or bar chart. This puts the actual values of time along
the X axis, rather than nonnumeric labels uniformly spaced regardless of their values.

Also, if the scale of the RPM data is way off from the temperatures, you can use a
secondary axis for RPM. Double click the series, and on the Axis tab, choose the
Secondary Axis option.

- Jon
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Jon Peltier, Microsoft Excel MVP
Peltier Technical Services
Tutorials and Custom Solutions
http://PeltierTech.com/
_______

Bradly McConnell wrote:

TM wrote:

I am not looking for any statistical analysis. I am just looking to
crate some charts where I can view data from more than one sensor on
the same chart.

For example, I would like to see (RPM, coolant temp, and intake temp)
vs time, on the same chart. That way I can see the relationships.
Such as obvious things like the temps will rise as the engine heats
up. But if I put a heat shield on something then I want to look at
this chart and see if the temps rise more or less after the modification.

This is the kind of thing I am looking to do. Hope this can be done

If that's the case, you should simply be able to put the data into four
columns - for simplicity, we'll put time as the first (A), then RPM,
Coolant temp, intake temp in the following columns. Once you have the
data in place, create a chart using either the line or bar graph styles
(just to make it easy) - use the time column as your x-axis, and then
add a series for each of the other three columns. It should lay them
out. The only problem I see with tying in the RPM, is that the scale
will be way off for the temps. Either all the RPM marks will be above
the high point (using temps) or the temps will all show close to the
bottom (using rpm).

Brad