A Garcia
New Member
98 civic ex coupe M/T.
Help! I start my car and let it warm up and within minutes the iac valve closes and the higher warm up idle drops to a normal rpm. I put the car into first and slightly accelerate. The rpm as should be expected, rises but then as I change into neutral to go into second gear the rpms stay suck at between 1500 and 2000 rpm. As I come to a stop and am in neutral the rpms stay high. But the fact that the rpms are high makes it harder than usual to shift into first. So as to avoid just shoving it into first I shift into second while stopped and slightly let go of the clutch just enough to send the car into slight forward motion as this will then let me shift out of second and it goes into first smoothly. As the car progressively get warmer I can gun the gas peddle for an instant and the rpms drop to normal levels. In trying to resolve this problem I have replaced the TPS sensor, cleaned the IAC valve, removed and cleaned the the throttle body as well. While in my drive way while the rpms are stuck high with hood opened I have confirmed that the lever where the accelerator cable attaches is bottomed out at the stop so I don't think the throttle itself is getting stuck slightly opened. Once the car has run around for 10 so minutes the problem is gone. But after parked for anything more that say two hours sticking reoccurs.
Help! I start my car and let it warm up and within minutes the iac valve closes and the higher warm up idle drops to a normal rpm. I put the car into first and slightly accelerate. The rpm as should be expected, rises but then as I change into neutral to go into second gear the rpms stay suck at between 1500 and 2000 rpm. As I come to a stop and am in neutral the rpms stay high. But the fact that the rpms are high makes it harder than usual to shift into first. So as to avoid just shoving it into first I shift into second while stopped and slightly let go of the clutch just enough to send the car into slight forward motion as this will then let me shift out of second and it goes into first smoothly. As the car progressively get warmer I can gun the gas peddle for an instant and the rpms drop to normal levels. In trying to resolve this problem I have replaced the TPS sensor, cleaned the IAC valve, removed and cleaned the the throttle body as well. While in my drive way while the rpms are stuck high with hood opened I have confirmed that the lever where the accelerator cable attaches is bottomed out at the stop so I don't think the throttle itself is getting stuck slightly opened. Once the car has run around for 10 so minutes the problem is gone. But after parked for anything more that say two hours sticking reoccurs.
