Poor idle, sluggish acceleration ---> good idle & smooth acc
[:)]Simple fix providing all ignition components are in working order.
- The butterfly is totally dirty, grease dirt mixed deposit at the edge and the surface.
Fix:
- Get a clean Tshirt or cloth without much fur, spray carburator cleaner on it and use the finger inside the well damped cloth (with carburator cleaner) to clean the butterfly. Carefully not to get the dirt inside the throttle body, slowly and surely clean the surface first, the the edge of the butterfly, change to clean cloth everytime you wiped. Push the butterfly down after the surface and the edge is cleaned and start wiping off the wall of the throttle body, you will see black deposit all around it. Go as deep as your finger would go and clean the whole wall.
- The idle will be so smooth and the so is the acceleration at any speed.
I did it yesterday after the car almost stalled in stop and go traffic and vibrate at 60-65 mph. Today, the car idle great and accelerate up to 75 mph smoothly. Simple thing but it works. While you're in the air cleaner area, check it out and replace if it's really dirty.
- At 135k miles, still runs smoothly with old plugs and air cleaner.
Yes, the one that let the air in. Mine is also pushed down to get air in. At low rpm, like idle, the pressure is very light to get into the intake, if the edge of the butterfly is sticky or dirty, less air can go in which causes the idle to be rough. The surface of the butterfly should be smooth so the air can slip to the edge easily. Mine was covered with black dirt grease. It will be amazing difference when the butterfly was clean and shiny.
Thanks for the hint.
If I have understood ok, what you mean is cleaning both the throotle plate and the body of the fuel distributor. For that purpose, you have to push the plate down and clean all that you can, right?
Can I use gasoline instead of carb cleaner? (assuming that I don't use too much, of course)
Actually you can use anything that can remove the grimes and dirt off the butterfly and the wall. Since most of the dirt is so thick, be careful not to drop it down while you're wiping it off the wall. Wipe UP WARD so you can scoop the dirt off the wall. You'll notice the idle response faster to stop and go and if it was eratic down to 600-700 RPM, it will be stable @ 650-800 in stop and go situation. As for the acceleration, the 2.3 is not fast but it will go smoothly from 0- whatever speed your current car can go without hickups or vibration at the engine RPM.
I just spent 20 mins using nothing more than my finger and some paper towel and got an alarming amount of "damp soot" out![:0] Cos the plate drops its hard to get at but at the front about 2-3 inches down inside
the throtle body is a recess which was caked, really thick. I could'nt get at the butterfly except to wipe over the top of it. You need small fingers and
a third hand really! :D
Anyway after I cleaned myself up I drove home and the throttle response and idle was much nicer.
Mike.
Ps if anyone is thinking of doing this a torch is handy to see properly and use a vacume cleaner with a "cardboard attachment" to hoover out the bits of crap that break free.
My car has a somewhat rough idle and sometimes (when AC is engaged, etc), it drops to 500 turns or so for a moment. Did you have these symptoms?
Itooz, how do you clean the plate edge? I suppose you have to press it down a little bit, right?
Yes, make sure the wall is clean and all around the edge and the surface of the plate. Push down as much as you can and clean as much as you possibly can.
My symtom is like yours.
Stop and go, idle rough, turn on a/c -> rougher and dies when you accelerate and release gas paddle quickly in traffic.
After you clean it, you will see at arupted acceleration, the idle goes low and quickly stabilizes (up RPM (800) then back to normal). Dying is not a problem any more and the idle is solid although it's a 4 banger, still vibrates a little, but consistently.
Thanks!
I am really anxious to try that, my car goes very well but one of the things that most annoy me is that inconsistent idle and hesitation when AC is turned on.
Linear Mode
