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Andrew
Andrew, ASE Certified Technician
Category: Honda
Satisfied Customers: 900
Experience:  Currently working for Acura at this time with previous work with volvo
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when my car is at idle in park the rpm go up and down like

Customer Question

when my car is at idle in park the rpm go up and down like iam pressing the peddle. and when iam driving its like the car is going by it self
Submitted: 8 years ago.
Category: Honda
Expert:  Andrew replied 8 years ago.
what year make and model and is the check engine light on..
Customer: replied 8 years ago.
yes i got the codes read and it said map high out put tsp high out put and manucfature something and i had three more cant remember.
Customer: replied 8 years ago.
i forgat to tell you i have a 98 honda accord ex-v6 coupe
Expert:  Andrew replied 8 years ago.
ok can you get all of the codes again so we can nail down a pattern to the issue you are having it would make it alot easier. the two codes you mentioned can cause the issue you are having also a bad idle control valve can cause the issue. if you could get the codes again it would make it easier to help you out..
Customer: replied 8 years ago.
i want be able to get them till tomorrow
Expert:  Andrew replied 8 years ago.
cool get them and then post them up and then we can start...
Customer: replied 8 years ago.
k
Customer: replied 8 years ago.

p0505 and p1457 i changed out the throttle body yesterday and it had all the sensors on it but i got it used. these are the codes i got after i put it on i had 6 before i put it on

Expert:  Andrew replied 8 years ago.

po505 is a fault in the idle control system more then likely a bad iac valve. also check for loose or unconnected vacuum tubes on the intake...

 

p1457 is an evap bypass solenoid failure...check for corrosion on the connector for it and if non is found then replace it and celar the codes out...the pic attached shows its location.

 

graphic

Andrew and 5 other Honda Specialists are ready to help you
Customer: replied 8 years ago.
k
Expert:  Andrew replied 8 years ago.
YOUR WELCOME AND THANKS FOR THE ACCEPT....