Edelbrock 3843 User Manual

INSTALLATION INSTRUCTIONS

Edelbrock/BBK 62mm Polished Throttle Body

Catalog #3843

• Please study these instructions carefully before installing your new Throttle Body. If you have any questions or
problems, pleas e call our Technical Hotline at: 1-800-416-8628.

• Description: Designed for Honda 1992 and later 1.5L and 1.6L.

Throttle Body Kit Contents:

1 − 62mm Throttle Body Assembly 1 − Chrome Back Off Plate
1 − Throttle Body Gasket 1 − Block Off Plate or Map Sensor Gasket
1 − Billet Aluminum Piece with Press Fit Bypass Valve 2 − M4 x 10mm Block Off Plate Screws
1 − Bypass Valve Gasket 1 − Throttle Position Sensor Gasket
3 − M6 x 20mm Bypass Valve Bolts 2 − M5 x 8mm Throttle Position Screws

Installation Inst ructions

1. Make sure the engine is completely cool and set the
parking brake on the vehicle.

2. Raise hood and check the throttle position sensor (TPS)
voltage. Turn the ignition switch to the ON position, but
do not turn on the engine. Use a digital volt/ohmmeter
and write down the voltage as a reference for
installation. The voltage should be approximately 0.5V
to 0.99 V.

3. Disconnect the negative battery terminal.

4. Remove air filter duct, all vacuum hoses, water
(coolant) hoses and electrical connectors from the stock
throttle body.
Note: Engine coolant may run from the hoses once
removed.

5. Disconnect the throttle linkage by opening the throttle
manually and slipping the cable from the cam groove on
the linkage.

6. Remove the four nuts securing the throttle body to the
intake manifold and remove the factory throttle body.

7. Remove the throttle position sensor (TPS) from the
factory throttle body. You must carefully grind or file
away the heads of the rivets.

8. If the factory throttle body has a bypass valve at the
bottom install the supplied billet aluminum piece using
the bolts (3-M6 x 20mm) and gasket.

9. If the factory throttle body has a map sensor mounted
on the topside remove it and install it on the new throttle
body. Use the supplied screws (2-M4 x 10mm) and
gasket. If not the supplied chrome back off plate must
be installed in this location with the supplied gasket and
screws (2-M4 x 10mm).

2000 Edelbrock Corp. Edelbrock Corporation ••2700 California Street••Torrance, California 90503 Rev. 1/24/00

10. Install the throttle position sensor (TPS) on the new throttle
body using the supplied gasket and screws (M5 x 8mm).

Note: To achieve maximum benefits you should match the

intake opening on the factory intake manifold to the size of
the new throttle body bore. The factory manifold should be
bored or hand grinded “OFF” the engine. Refer to the

intake. Use the gasket as a template to mark the manifold
for grinding.

11. Using the factory nuts and the supplied gasket install the
new throttle body on the factory intake manifold and
secure.

12. Slip the cable on the throttle linkage.
Note: More slack may be needed on the linkage in order
for the butterfly to close completely.

13. Observe the throttle body while an assistant presses and
releases the gas pedal to ensure that the throttle plate both
opens and closes fully.

14. Reattach the air filter duct, all vacuum hoses, water
(coolant) hoses and electrical connectors on the new
throttle body.

15. Any unused vacuum ports on the new throttle body must
be plugged.

16. Reconnect the negative battery terminal. Turn the ignition
switch to the ON position, but do not turn on the engine.
Adjust the throttle position sensor (TPS) to the stock
voltage by slightly loosening the mounting screws and
rotating the TPS to the desired voltage. Then retighten the
mounting screws.

17. Start the vehicle and check for loose connection or coolant
leaks, etc.

18. After the vehicle is warmed up check the idle speed (refer
to owners manual). If the idle is to low adjust it by turning
the bypass screw (gold screw 12 o’clock position from the
vacuum tube) counter clock wise with a flat blade
screwdriver.

19. Double-check the fasteners and clamps to ensure they are
all secure.

for 1992 and Later 1.5L and 1.6L Honda

l for removal and installation of the factory