33 QD134-15
8.3 GEARSHIFT ISSUES
When first discovering a gear shifting issue, it is important to first follow a few steps before attempting any
remedy for the issue.
1. First of all, plug into the car and download the engine data. Once the data has been downloaded,
the cars normal parameters, (TPS Too High/RPM Too High etc). The shift will not be allowed if it sees
any of these.
2. Next step is to open up LifeMon and check whether there is any output from the paddles. Do this by
switches are registering on this channel by displaying up/down. If there is no output, check the wire
from the steering wheel is still plugged in and has no breaks or tight bends.
3. Is it shifting through all gears? Or just having trouble with one specific gear? If one specific gear this
suggests it may be a mechanical issue and it is strongly advised to contact an authorised Radical
engine shop for more advice on what to do. If you have carried out the first two steps and are still
having issues shifting through all gears, take a look below for more help.
DOWNSHIFT ISSUES
Ensure the blip is between 20-35% also check it is blipping mechanically at the actuator end. Check actuator
bearings for play, check actuator length using the jig, check the TPS is set at 4% at rest and operating
normally -allowed shifts.
ISSUES GETTING OUT OF NEUTRAL
Lift off the clutch for a second and then depress the clutch again and retry. Check actuator bearings for play,
check actuator length using the jig, check the TPS is set at 4% at rest and operating normally, check the clutch
switch is sending a signal, check the clutch clearance is correct at the pedal.
UP SHIFT ISSUES
Check actuator bearings for play, check actuator length using the jig, check the TPS is set at 4% at rest and
-allowed shifts.
8.4 RELAYS
As of April 2018, the fuel pump, fan, water pump and paddleshift relays are
all on the right-hand side of the car behind the seat, just below the upper
mounting point of the seat. Cars built before April 2018 will have the
paddleshift relay in the left-hand sidepod, with the remaining three in the same
location. The charging relay is located on the charging loom which is on the
bottom left side of the engine bay, near the main chassis earthing point.
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