Other issues – BoonDocker YAMAHA: Apex Turbo User Manual
Page 15
BoonDocker – 1585 Hollipark Dr. Idaho Falls, ID 83401 – 208-542-4411 / 877-522-7805
www.boondockers.com – email:
– fax: 208-524-7381
Revised 05-07-07
Page 15 of 16
Other Issues
Engine runs erratically:
1. Verify that the ground on the sled’s harness has a good connection to the chassis.
2. Verify that the EFI Harness Ground Wire has a good connection.
3. Verify that all wiring is in good condition and that the wires have not pulled out of the terminals. To verify this,
look inside each connector and verify that the terminal pins are all at the same height. If a terminal is starting to
back out, it will appear to be lower in the connector, or the seal on the back-side will be protruding out farther
than the rest.
4. Unplug the EFI harness and plug original harness back into the injectors and verify that the sled runs OK.
5. If problem only occurs with Control Box plugged in, change all fuel adjustment settings to 0 and see if problem
persists.
6. Verify that the Control Box does not reset itself when the sled is running by doing the following:
a. When the sled is first powered up, change the menu screen on the Control Box to one of the fuel adjust
screens.
b. Run the sled.
c. Before shutting off the sled, verify that the screen is still on the same menu selection.
d. If the startup screen is displayed (showing version number etc.), the box has reset itself. This is likely
caused by bad voltage to the box due to an intermittent connection.
7. If necessary, the voltage supply to the box can be verified using a voltmeter. Probe from the Mag-side gray
connector on the EFI harness where two red wires go to one connector terminal. Insert a small thin wire such as a
paperclip or a small probe tip between the connector and the rubber seal in order to make contact with the terminal
inside. Place the positive voltmeter probe here. Place the negative voltmeter probe on chassis ground. At idle the
DC voltage should read around 12-14V.
Rough Idle:
Idle adjustments are much more sensitive than other adjustments since the injectors are on for a
very short duration. You may not be able to adjust your 3000 LO settings by very much.
LCD is dim:
If you are using a 9 volt battery to power the box when the sled is not running, your battery voltage
is getting low – replace your battery. Extreme hot or cold temperatures may cause the LCD to not
display properly.
LCD display is slow: Cold weather conditions can make the LCD respond very slowly. The Control Box will still
function OK. You can locate the box under the hood in order to provide heat so the LCD will
display quicker.
Moisture on LCD:
Condensation is normal if the Control Box is quickly moved from a cold to a warm environment.
In some cases, the Control Box enclosure may no longer be sealing properly. If such problems
persist, contact Boondocker to determine if resealing the box is necessary.
Check Engine light:
Make sure the wires in the EFI harness are correct and check for a bad connection in the wiring
harness. Recheck all connectors and be sure each is completely latched. Also inspect each wire to
make sure there are no frayed, broken, or melted wires. Look at the seals on the back of each
connector – if a pin has backed out, its wire seal will be protruding out of the connector more than
the rest.