96 Dodge Avenger stumble on start?

Question

I have a 96 Dodge Avenger that every once in a while, will stumble as soon as it is started and the rpm will dip to about 200-300 and then go up a few seconds later. A few times it has completely stalled. Usually the car will start fine, crank the normal amount of times, rev high then drop to normal idle rpm and idle fine. 

However occasionally the engine will crank only once and startup as soon as I turn the key, but only rev about 2 or 300 before sputtering its way up to 800 where it should idle. Sometimes it will stumble on acceleration at highway speeds. 

I gutted the cat converter and cleaned the throttle body and intake system, which made it do this less frequently. The air box makes a whistling noise on acceleration which my mechanic says may be a bearing.

I know the idler pulley has some worn bearing in it, causing the belt to slip occasionally. Can the belt slipping cause the engine to stumble? If not, I may have narrowed it down to an o2 sensor, Idle Air Control valve, or an intake issue. The fact that it does it only 15% of the time makes me think it is electrical. Are there any sensors besides the o2 sensor this could be?

Thanks guys.

justice · Accepted Answer

Not that i can think of but try running some injector cleaner through it and you might check for a fouled plug.

morein · Answer

ok i visit do extra positive than the first 2 adult adult males so right here is going.... First: because you recognize no longer something about vehicles maximum of your money is going to bypass right into a save vendors pocket! it really is in basic terms the way it really is because you don't recognize the thanks to do it your self. i advice that you prepare your self on vehicles so that you recognize the thanks to get the position you want to be. even as i become youthful i ended up tossing various money down the drain because I had various options yet no longer the recognize how. next: "What are you able to point to enhance my horsepower and torque without doing to a lot artwork or spending thousands of bucks, In all honesty I actual have about $one thousand today" nicely for that a lot there are 2 belongings you may do to get a mild enhance in overall performance. Get a ok & N air filter out and commence searching for a overall performance exhaust device. With the exhaust there are 3 approaches to bypass, one is to purchase the muffler and characteristic your community muffler save installation it. Or get a muffler and a severe move catalytic converter then bypass to the muffler save. Wait! catalytic convert-what? convinced, the cat converter is the emmisions area of the exhaust device and the inventory area is in many circumstances really restrictive. or you should work out if any of the muffler makers make a exhaust device on your automobile. next: "im no longer to sensible if it really is a stupid statment yet i'd like my automobile to be swifter then inventory mustangs and camaro's even as i'm finished with it" nicely something is a threat yet on your case it would require extensively more effective than $one thousand money! There an previous declaring... how briskly you bypass relies upon on how a lot you want to spend! Or something like that. really it ain't less expensive! you'd be smarter to commence with something extra on the point of a Mustang or Camaro yet it really is as a lot as you. good luck!

Trending News

96 Dodge Avenger stumble on start?

2 Answers