Configuring Mega. Squirt- IIClick on our menu buttons immediately below to find Mega. Squirt. USB will may work, and many people have reported that they have been successful using a USB- serial adapter.

LM1949 SNLS349C – FEB 1995– REVISED MARCH 2013 www.ti.com Typical Circuit Waveforms Figure 18. APPLICATION HINTS The injector driver integrated circuits were. Page 1 of 2: How to Diagnose a BAD Fuel Injector. Honda Accord, Prelude, Odyssey. Symptoms of a BAD Fuel Injector in your 2.2L, 2.3L Honda. What tools do I need to.

Fuel Injector information and Specifications specs guide to help out when you are the junkyard.

Just about any computer that is capable of booting Windows 9. Before starting this section, be sure you have read and understood the information on the Mega. Squirt- II. Instead, save files with names. Note the Tuner. Studio. MS will suggest a.

There is more on this in. File/datalogging'. If you are not. sure what a parameter does, or whether it applies to you, leave it at the. Note that it is possible to damage your engine and/or Mega.

Squirt. Be sure to read this. In particular, read the safety. Tuner. Studio. MS has an 'automated' install package, similar to most other modern Java software. You download the set- up file (see below), click on it, and the package installs itself.

You may have to select some options, or you may chose to select all the defaults. For example, the injector pulse width is the measure in milliseconds of how long the injector is opened for each pulse, regardless of how many times it is opened in a cycle. Duty cycle gives the percentage of time the injector is open irrespective of individual pulse duration. To find information on these advanced options, see the Tuner. Studio. MS help file.

Instead, save files with names like msii. If you are not sure what a parameter does, or whether it applies to you, leave it at the default value. The X- Tau tuning values are set in the X- Tau Time Table menu item under Tables.

See the X- Tau page for more information. Prime, ASE, WUE Tables. Chose whether you want two point (a high temperature and a low temperature settings) or 1. The tuning values are listed in under the menu item Tables.

Note that in all cases, 1. Then your Mega. Squirt- II. If you are using other sensors, you can use the 'Calibrate Thermistor Tables' dialog under 'Tools'. You enter the bias resistor value and three temperature/resistance points, and the table is created and downloaded to your Mega. Squirt- II. Even idle is NOT allowed, because these tables ONLY exist in flash, so once a table is erased, there is nothing but garbage in there until it is re- programmed, one word at a time.

Until that reprogramming is complete, operating the engine is unsafe. They are essential to proper functioning of a Mega. Squirt. Both sensors are Negative Temperature Coefficient (NTC) thermistors. This means that they are resistors whose resistance decreases as their temperature goes up. The 'supply voltage' of 5.

Volts (we will call this Vs) is fed to a resistor with a default resistance of 2,4. Ohms (2. 4. 9K Ohm) (this is called a . The voltage (V) at that point of the circuit is. V = Vs * (Rs/(Rb+Rs)) = 5.

Rs/(Rs+2. 49. 0)). Resistor Rp does not affect the voltage divider, it simply limits the current to the processor pin (there should be very little current anyhow, the input is . The conversion from volts to steps is done by the analog- to- digital converter (ADC). There are various arguments. CHT or oil temperature as the 'coolant' temperature input on air cooled motors.

A lot depends on whether the motor is substantially oil cooled or not. Since the CTS input is used for warmup enrichment, you want something that responds fairly rapidly, so this is highly engine- dependent. This is from the INI notes.

FAHRENHEIT (Expanded/Normal). Log Book Covers For Truck Drivers Nzs here. Low Limit: - 4. 0F/- 4.

F. ; High limit: 6. F/3. 00. F. ; Low danger: 1. F/5. 0F. ; Low warning: 2.

F/1. 50. F. ; High warning: 3. F/2. 00. F. ; High danger: 3. F/2. 20. F. However, you have to calibrate the thermistor table(s) appropriately. The thinking is that if you are at an extreme it is probably a bad or missing sensor, so it goes to a default value. This isn't a big deal in Tuner. Studio though, you can change these limits in the ms.

Reference. Tables. You can adjust these limits if EXPANDED. Currently only the CLT sensor respects EXPANDED. Also, if the volts at the processor pin gets very near 5. The default value is 2. K Ohms, and if that is what is in there you might try 2.

K Ohms or less (down as low as 1. K). Note that you have to re- calibrate the thermistor tables when you change resistor values. If the ADC count values are very high or very low at your sensor's resistance (at a given temperature), the temperature range may be restricted.

For air- cooled use, one side of the argument says to use the CHT over the oil, as the oil takes over twice as long to get to operating temperature than water in a water- cooled car does. The engine does not need to run rich for long periods, only enough to keep the car driveable while it is warming up. Once the cylinder head is up to. For an air cooled engine you can drill and tap into a fin in the head for the CHT sensor. In that case, the GM coolant sensor fitted in the oil (sump) will work nicely.

Search the archives for extensive discussions on these points. It is your decision. The basic motor position at any given time is determined from the input table of step position versus coolant temperature. To this basic control algorithm, several features have been added as described below.

You need to set your Mega. Squirt- II. These are selected under Settings/Idle Control in Tuner. Studio. MS. If you set your stepper to 'always on' for 1. It will get right warm, but it shouldn't burn your fingers just touching it. You can also set your Fast Idle Threshold if you have installed a fast idle solenoid. Enter a coolant temperature to turn on the fast idle solenoid. A typical value is 1.

The Fast Idle valve will be activated below this temperature (1. The Fast idle Threshold is independent of any warm- up enrichment. Fast idle valves generally have one or two wires.

Ten temperature dependent levels of PWM are user specifiable if this option is selected (see 'Idle PWM Dutycycle' under 'Tables'). Modifications to the board are required, see this link for more details.

These are set under 'Tables/Idle Steps' in Mega. Tune. Stepper motor IACs usually have four wires. This is the most common type, it holds its position if not powered, and is difficult to turn by hand. Required if your stepper 'free wheels' when you spin its pintle un- powered with your hand. This can be useful in some situations in which the stepper moves unreliably if moving only at the lower voltages of cranking and warming up, etc.

In some cases setting the stepper motor to . However setting it to . If it doesn't feel too hot to you, then set it to . Apparently this is what GM does. It may get warm, but it shouldn't burn your fingers just touching it. The table value for the starting temperature may be fine after the engine has started up, but during cranking more power may be needed, especially if the starting temperature is cold.

To provide this, you can input a step position that provides a larger than normal air opening during cranking. So, if in cranking and 'Cranking Position' < table value, then the IAC motor position (or PWM%) is set to 'Cranking Position', and when cranking is done, the motor position starts tapering (over the 'crank to run taper time') up to the table value over a user input period, typically a few seconds. Then the table value will always be used since it provides more opening. Higher values give a higher idle for longer periods, which can improve starting performance. Changes to the motor are only made when new coolant temperature > coolant temperature on the last move, or, new coolant temperature < (coolant temperature on the last move - Hysteresis temperature). What this does is allow constant motor motion while the coolant temperature is rising, but when it peaks, there will be no further motion unless things cool back down - which is unlikely.

Disable it by setting the 'cold temperature to - 4. Then this feature will not be used unless the coolant temperature at startup (ECU first powered on) is below - 4. This feature is used toward the end of the warmup sequence when the coolant temperature is close to its final operating temperature.