
AIR PUMP TROUBLESHOOTING GUIDE
Warnings
The sensor and the copper sample tube are hot. Before touching
the sensor or the sample tube, make sure it has cooled.
To avoid the risk of electrical shock, do not disassemble the
pump housing. No user serviceable parts inside.
Before assembling the filter, lubricate the threads on the filter stem
and filter bowl using the grease provided with the replacement
filters or a similar grease. Do not use silicone. The filter stem may
break if not lubricated.
Keep the air pump upright. Tipping the pump
may result in damage to the sensor.
Running the pump with the filter clogged,
hose kinked, or filter removed will damage
the pump and void the warranty.
Always allow the air pump to run for five
minutes, after the dyno runs are complete, to
allow the air pump to cool.
The Air Pump Assembly has a 90 day warranty.
warning light
Water Aspirator
filter assembly
1. Verify the water aspirator is removing water from
the filter bowl during operation.
2. If water is collecting in the bowl and is not coming out of the aspirator
inlet
outlet
water
aspirator
direction
of flow
outlet, clean the aspirator.
3. Check for leaks in the aspirator. Refer to
the Air Fuel Ratio Module User Guide
for more information on finding and
fixing leaks.
Refer to the Air Fuel Ratio Module
User Guide on your WinPEP CD for more
information about the air pump.
water aspirator
Filter Assembly
Clean the filter daily or more often depending on usage.
DO NOT wait for the red warning light to come on.
Before assembling the filter, lubricate the threads on the filter stem and
filter bowl using the grease provided or a similar grease.
T The red warning light will come on when there is sufficient blockage in the
filter or if there is some other restriction in the system.
T If cleaning the filter does not result in free air flow, replace the filter. Be sure
to check for other restrictions in the system.
T Refer to the Air Fuel Ratio Module User Guide for
instructions on cleaning and replacing the filter.
sensor
T Refer to the back of this card for the filter assembly
replacement parts.
System Check
Perform a system check before and after every
tuning session to ensure accurate readings.
The copper sample tube is hot. Before touching
the sample tube, make sure it has cooled.
1. Cover the end of the copper sample tube with your
finger. The red warning light should come on in less
than three seconds.
2. If the warning light does not come on, there may
be a leak in the system.
Refer to the Air Fuel Ratio Module User Guide
for more information on finding and fixing leaks.
3. If the warning light stays on after removing your
finger (allowing air flow to resume), clean the filter.
4. Repeat steps 1-3 to confirm the warning light comes
on when you cover the copper sample tube with
your finger and turns off when you remove
your finger.
copper
sample tube
P/N 98199104 • Version 4
For assistance, call Dynojet Technical Support at 1-800-992-3525, visit www.dynojet.com, or write to Dynojet at 2191 Mendenhall Drive, North Las Vegas, NV 89031.
© Copyright 2001-2002 Dynojet Research, Inc. All Rights Reserved. 051502SD

AIR PUMP TROUBLESHOOTING GUIDE
Filter Assembly Replacement Parts
fitting
(P/N 34111220)
seal
filter element
filter stem
(P/N 34492000)
filter housing
deflector
seal
filter bowl
part number
The following parts are common replacements:
29909000
29909001
34491000
34491001
34310002
34492000
11108800
24730300
The following parts are included in P/N 34420001:
• filter housing
• filter stem
• filter bowl (poly)
description
filter bowl
(metal)
filter bowl
()poly carbonate
filter element kit
(includes seals and grease)
filter element
water aspirator
filter stem
silicone tube
(not shown)
copper sample tube
(not shown)
• filter element
• seal (2)
• deflector
P/N 34420001
P/N 34491000
P/N 98199104 • Version 4
For assistance, call Dynojet Technical Support at 1-800-992-3525, visit www.dynojet.com, or write to Dynojet at 2191 Mendenhall Drive, North Las Vegas, NV 89031.
P/N 34491001
water aspirator
(P/N 34310002)
© Copyright 2001-2002 Dynojet Research, Inc. All Rights Reserved. 051502SD