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Hello, my check engine light came on in my 2001 Chrysler ...


Hello, my check engine light came on in my 2001 Chrysler town and country van 3.3 v6 the code reader sent me these codes p0302 cylinder 2 miss fire, po403 exhaust gas recirculation control circuit, po508 idle air control system ci...

Hello, my check engine light came on in my 2001 Chrysler town and country van 3.3 v6 the code reader sent me these codes p0302 cylinder 2 miss fire, po403 exhaust gas recirculation control circuit, po508 idle air control system circuit low. I changed all the spark plugs and wires and the coil pack, this made the car run good, but the idle speed was really low, so I took off the throttle body and idle air control valve and clean ed them really good. After I put it all back together now the van is idling really high 1500 to 2000 rpms. So by cleaning the throttle body and idle air control valve my van went from idling really low to really fast and I dont understand why. I researched the idle air control valve and one of the tips it said was there could be a vaccum leak that would cause the idle to run high. Would should I do? Replace the idle air control valve? Is there a way to tell if it needs to be replaced or maybe when i took it off the two o rings on it could be bad so would that cause a vaccum leak? Any help you can give me is greatly appreciated. Mechanic's Assistant: Does the light stay on, or does it blink? Stays on Mechanic's Assistant: Are you fixing your Town and Country yourself? What have you tried so far? Yes, I replaced the spark plugs wires, and coil pack. And cleaned the throttle body and idle air control valve

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Responses

Automotive Expert
Hello, my name is \*\*\*\*\* \*\*\*\*\* to just answer! I will be assisting you with all of your vehicle questions today. I’m really sorry that you’re having this issue and I’m going to help you through it, but please understand that I (respectfully) don't know your skill level or tools you have to assist us to diagnose/repair your vehicle. Also, understand that I can't see, smell, hear or touch the vehicle either, so your patience/understanding is appreciated. Please allow me up to 10 minutes to gather schematics and other pertinent information for this issue. I do not know anything about the fees or charge so please if you have any concerns, direct them to customer service. My aim is to give you the best service possible and to help you. If you have any questions or concerns, please don’t hesitate to let me know. I appreciate your patience and will provide responses as soon as possible. Thank you. did you replace the o rings and the throttle body gasket before reinstalling them?

No
Automotive Expert
ok, you need to do both. anytime something is removed and reinstalled the o rings or gaskets must be replaced. you created a vacuum leak by not doing so.

Ok do they [sell](/topics-sell/) those o rings separately or do I have to buy new parts to get the o rings?
Automotive Expert
the part store sell the gasket separately and the dealer would have the o rings.

Ok thankyou, I will work on getting the gasket and o rings replaced. If that doesn't fix the problem I will contact you back and go from there.
Automotive Expert
very good. I am pretty certain that will take care of it. I'll be here for ya

I just contacted atuozone and they have the orange throttle body gasket, but they dont sell the two o rings for i.a.c. valve. I'm on hold with the dealership how certain are you that I can buy the o rings without having to buy a new i.a.c valve?
Automotive Expert
Im very certain. I own a shop we get them all of the time

I'm still on hold with the parts dept, but thankyou it really helps to know what I'm asking for and how to describe it, I was lost until I got in contact with you, so thankyou very much.I just got off the phone with the dealership parts dept and they dont sell the o rings to the i.a.c. anymore, autozone doesn't sell them either, so is there a way to match those o rings or should I just buy a new i.a.c valve?
Automotive Expert
you can buy an assortment of different o rings from the part store and try matching them up eith the o rings for the IAC

That's what I was thinking, is there a way to find out the exact size of the o rings, so I can buy that exact size or buy an assortment pack that contains that size? Or is this something I have to just match up by eye?
Automotive Expert
I can try to find out the exact size, it may take a while

I appreciate it if you could, I was gonna try to do the same.
Automotive Expert
ok

Hey you still there? So I had to buy a new i.a.c valve because the o rings where almost impossible to match. So the van is running 100% better but when I first start it for the day I have to hold down the accelerator a little bit and rev the rpms to warm it up so to speak for a min or two and once I take off it drives great and doesn't die anymore. The check engine light is still on and the codes are the same ,so I dont know what to do next. What else affects the idle of the car,? What does the e.g.r do? One of the codes is for that being farted up. Any help you can give will be greatly appreciated, thanks
Automotive Expert
you can always pull the EGR valve off and clean it up really well with brake parts cleaner.

That's what I was thinking to do, thanks.
Automotive Expert
you bet. let me know if it improves

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