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Product Update: Legend Throttle Body
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1. Idle Quality Dear Legend Owner Honda has determined that your Legend may sometimes experience an erratic idle condition Your dealer now has the parts needed to correct this condition Please call your Acura dealer and schedule an appointment to have them installed This update will be done free of charge Please plan to leave your car at the dealership for at least half a day to allow them scheduling flexibility We apologize for any inconvenience this product update may cause you however our main concern is the continued trouble free operation of your Legend If you have any questions please call or write Acura Customer Relations Department 1919 Torrance Boulevard Torrance CA 90501 2746 800 382 2238 Sincerely AMERICAN HONDA MOTOR CO INC Acura Automobile Division 93 025 3 of 3
2. ACU RA Service Bulletin December 7 1993 YEAR MODEL VIN APPLICATION BULLETIN NO 1991 LEGEND See VEHICLES AFFECTED 93 025 C Product Update Legend Throttle Body BACKGROUND 3 Pinch off the coolant hoses so they will not leak then remove them from the throttle body The customer may sometimes experience an erratic idle The updated throttle body eliminates this 4 Disconnect all vacuum hoses from the throttle body possibility 5 Remove the two bolts mounting the throttle cable bracket to the front of the throttle body VEHICLES AFFECTED 3 6 Disconnect the electrical connector from the 4 door thru VIN JH4KA7 MC029711 throttle angle sensor Coupe thru VIN JH4KA8 MC006531 7 Remove the four throttle body mounting nuts Remove the throttle body CUSTOMER NETIPISANON 8 Remove the throttle cable bracket mounting bolt Owners of affected vehicles will be contacted by mail from the underside of the throttle body and asked to take the car to a dealership for Disconnect the throttle cable and cruise control updating The text of the customer letter is at the end cable from the linkage of this service bulletin 9 Attach the throttle cable and cruise control cable to the linkage of the new throttle body Install the CORRECTIVE ACTION bracket to the underside with the original bolt Replace the throttle body with the updated assembly 10 Install the throttle body with a new gasket listed under PARTS INFORMATION Tig
3. cification adjust it according to the procedure on page 11 112 of the service manual LOCKNUT ADJUSTING NUT BRACKET DEFLECTION 10 12 mm 17 Check the cruise control cable adjustment according to the procedure in the service manual Sedan page 23 324 Coupe page 23 350 Adjust if necessary 18 Start the engine and allow it to reach normal operating temperature cooling fan comes on 19 Set the idle speed e Connect a tachometer to the igniter loop or the tachometer connector e Disconnect the 2 P connector from the EACV e Turn on the headlights high beam the rear window defogger and the heater blower fan high speed Make sure the A C is off e Adjust the idle speed to 500 50 rpm with the transmission in Neutral or Park IDLE ADJUSTING SCREW 20f3 20 Turn off the engine and headlights reconnect the EACV connector and remove the tachometer 21 Remove fuse 15 from the under dash fuse box for 15 seconds to reset the ECM 22 Reinstall the throttle body cable cover 23 Center punch a completion mark over the last digit of the engine compartment VIN Center punch above last digit PARTS INFORMATION Throttle Body Subassembly includes gasket P N 04102 PY3 A00 WARRANTY CLAIM INFORMATION Operation number 121166 Flat rate time 0 8 hour Failed P N 04102 PY3 A00 Defect code 626 Contention code J76 93 025 Example of Customer Letter Product Update 1991 Legend
4. hten the mounting nuts to 22 N m 2 2 kg m 16 lb ft 1 Remove the throttle body cable cover 11 Reinstall the cable bracket mounting bolts in the 2 Remove the two hoses from the air inlet tube front of the throttle body Tighten the bolts to Remove the resonator mounting bolt from the top 10 N m 1 0 kg m 7 3 lb ft of the radiator Loosen the hose clamp and 12 Connect the electrical connector to the throttle remove the air inlet tube from the throttle body angle sensor 22 Nm 2 2 kg m 16 Ib ft THROTTLE ANGLE SENSOR CONNECTOR AIR INLET TUBE THROTTLE CABLE BRACKET 1993 American Honda Motor Co Inc All Rights Reserved BTB 16246 9312 1 of 3 CUSTOMER INFORMATION The information in this bulletin is intended for use only by skilled technicians who have the proper tools equipment and training to correctly and safely maintain your car These procedures should not be attempted by do it yourselfers and you should not assume this bulletin applies to your car or that your car has the condition described To determine whether this information applies contact an authorized Acura automobile dealer 13 Reinstall the vacuum hoses 14 Reinstall the coolant hoses 15 Reinstall the air inlet tube to the throttle body Reinstall the resonator on top of the radiator Connect the hoses to the air inlet tube 16 Check the throttle cable free play It should have 10 12 mm of deflection If it is out of spe
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