![]() ![]() I also bought the Sears clamp tool and that saved me a ton of time. I replaced the PCV tube and the MPV runs great. I found the PCV tube at a Mazda dealer for $31.00. Posted: Sun 6:29 pm Post subject: Re: 2004 MPV P0171 & P0174 Rough Idle only On ebay, the net cost is under $35 including shipping. For 2002-2003 models like my MPV, the following source on ebay (a little over $70 net) is about as good as you can do if you want to buy the updated factory part.įor a 2004 model like yours, the cost is much less. The cost (and configuration of the part) depend on your model year. Posted: Wed 7:34 am Post subject: Re: 2004 MPV P0171 & P0174 Rough Idle only Seems like I always see it around $80.00. I see people say its $30.00, is that the price. I am going to order the PCV tomorrow and start there. Posted: Sun 5:52 pm Post subject: Re: 2004 MPV P0171 & P0174 Rough Idle only It can be responsible for the rough idle and the CELs sometimes. You should at the least replace that PCV hose since it is already collapsed. Posted: Sun 9:52 am Post subject: Re: 2004 MPV P0171 & P0174 Rough Idle only I did do a search but did not see any with these symptoms. Let me know what other information is needed to help diagnose the problem. Can coils act this way or should I try the PCV or the intake gaskets. I could not get the spray on the back side of the gasket. I sprayed fluid around the intake but had no change in idle. I can clearly see the PCV tube is collapsed but do not see any holes. ![]() Acceleration is great and runs smooth on the highway. The van runs great except for rough idle when sitting at a light. I recently got a P0174 code, I cleared the code and about two weeks later I got a P0171 code. I replaced all coils and spark plugs at 100000 miles. Posted: Sun 7:16 am Post subject: 2004 MPV P0171 & P0174 Rough Idle only ![]()
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