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1999 Honda Civic Si 1.6L Poor Idle Quality, Surge, MIL Lamp on
Posted to Asian Driveability on 6/28/2011 9 Replies

HELP!! This one hurts...I am a GM guy, this is my daughters car. P1509 will not clear, replaced throttle body assembly, checked grounds at tstat housing, bled coolant, no change. TPS checks ok, shows 9.8%throttle position at closed, jumps to 30% as you acceler...

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  Related Documents & Media  1999 Honda Civic Si

 
Message Closed w/FIX

car Vehicle Data

1999 Honda Civic Si

VIN 1HGEJ8271X
Engine1.6 L / 4 cyl / GAS
Trans5-speed Standard
DeliveryFuel Injection / TBI
EmissionsOBD-II Compliant
SymptomsPoor Idle Quality, Surge, MIL Lamp On
OccursAlways

Trouble Codes

P1509Idle Speed Control System High RPM
Message Closed w/FIX

car Vehicle Data

1999 Honda Civic Si

VIN 1HGEJ8271X
Engine1.6 L / 4 cyl / GAS
Trans5-speed Standard
DeliveryFuel Injection / TBI
EmissionsOBD-II Compliant
SymptomsPoor Idle Quality, Surge, MIL Lamp On
OccursAlways

Trouble Codes

P1509Idle Speed Control System High RPM