Scan Gauge III

These are normal settings I derived from other many users to monitor Promaster in real time. Keep in mind that normal reading is fair weather and flat surface straight driving. Mountain or city driving will see increased temperature above alarm setting and more so in hot summer months which I haven't checked yet.

Also keep eye out on the new KIP-APP-LICATION coming out in January by Kip Amore of PromasterOnly.

1) Transmission Temperature (Alarm - 190F)

Generally below 175F

Should be 80-90F above ambient temperature

170F flat and 207F climbing pass in 4th gear and 4500 RPM

Can rise to 210-220F during heavy load/long steep grade

Now when it reaches 220, the fan kicks in until it gets down to 210, then back on at 220.

2. Coolant Temperature (Alarm - 220F)

200-215F is normal

Generally around 204-208F

Can rise to 225F on long climb

At 225-230F additional fan kicks in and it drop

3. Oil Temperature (Alarm - 220F)

Generally 197F

4. Oil Pressure (Alarm currently set to 55 PSI and below 20 PSI)

I'll update more later as don't have details yet but I and users generally report between 38 - 48.

Others have reported which I need to verify:

Cold start 56-60 psi

Warm idle 33-38psi.

Warm driving 50-58 psi

Driving +/- 55-56

Highest I've read is 110 psi during winter in Ontario.

5. RPM

Flat - 1300

Uphill - 2700

6. Catalytic Heater Temperature

Make sure it's always running the same and nothing stops it up.

7. Torque Converter

I'm not sure yet and here's what I gathered from out in the wild.

Torque converter slip - I suspect this is what we hot rodders call stall speed. It's the RPM at which the torque converter stops slipping and locks up. Changes in when a converter locks up can indicate signs of torque converter failure or slipping bands.

Light foot on the gas pedal keeps it at or near 0 and gas mileage goes up and transmission temperature goes down. Or another way to phrase it:

"As rpm increases, the slip rate of a torque converter goes down"

Q: What is a normal torque converter slip percentage?

A: Typical values range from 1% to 15%

(My Notes: Mine doesn't show that and maybe 40-65% Wondering if Reference Torque parameter ~250 correct?)

Q: How often should I check torque converter slip?

A: Periodically, especially if you experience transmission issues or changes in vehicle performance.

Q: Can I drive with high torque converter slip?

A: Prolonged driving with excessive slip can damage the transmission. It’s recommended to seek professional assistance.

Q: What are the signs of a failing torque converter?

A: High or low slip, shuddering, and loss of power.