2.3L acceleration issues
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Joined: Nov 2007
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2.3L acceleration issues
Hello folks:
I have a 1997 Ranger 2.3L automatic with 144K miles on it. Check engine light on.
Months ago the truck would suddenly start lurching and stumbling while driving . Acted like it was outta gas. It would clear up in a few minutes; sometimes it might last longer. It wouldn’t do this but every once in a while, Until about three weeks ago it started doing it again and this time it wouldn’t go away.
So after reading this informative forum I disconnected the Neg leg on the battery for over 40 minutes and cleaned the MAF filament. BIG improvement! No more stumbling.
However,after a day or so the gas pedal is " unresponsive and dead for the first 30-40 percent of travel distance of the pedal as it is being depressed. (Not every time, but often) I have to "stomp" hard for the truck to begin accelerating. Often times if I’m at a dead stop and try to accelerate in a normal fashion, the engine acts like it is trying to stall, at which time I have to "stomp" on the pedal for it to recover and take off.
I stopped in at a parts store and had them read my codes They are
1. P0102 MaF or Vac A circuit low Imput
2. P1121 control fuel air metering
3. P0443 EVAP emmisions
4. P0172 system too rich bank 1
I am thinking I need a new MAF sensor. Is there more going on?
Any help is appreciated.
I have a 1997 Ranger 2.3L automatic with 144K miles on it. Check engine light on.
Months ago the truck would suddenly start lurching and stumbling while driving . Acted like it was outta gas. It would clear up in a few minutes; sometimes it might last longer. It wouldn’t do this but every once in a while, Until about three weeks ago it started doing it again and this time it wouldn’t go away.
So after reading this informative forum I disconnected the Neg leg on the battery for over 40 minutes and cleaned the MAF filament. BIG improvement! No more stumbling.
However,after a day or so the gas pedal is " unresponsive and dead for the first 30-40 percent of travel distance of the pedal as it is being depressed. (Not every time, but often) I have to "stomp" hard for the truck to begin accelerating. Often times if I’m at a dead stop and try to accelerate in a normal fashion, the engine acts like it is trying to stall, at which time I have to "stomp" on the pedal for it to recover and take off.
I stopped in at a parts store and had them read my codes They are
1. P0102 MaF or Vac A circuit low Imput
2. P1121 control fuel air metering
3. P0443 EVAP emmisions
4. P0172 system too rich bank 1
I am thinking I need a new MAF sensor. Is there more going on?
Any help is appreciated.
Last edited by birdstreaker; Jan 16, 2008 at 03:11 PM.
Former Vendor
Joined: Jan 2008
Posts: 28
Likes: 0
MAF sensors can be very touchy parts. Do you happen to have a K&N filter on your truck? Many times, these can be over oiled and even a small amount of oil getting into the air stream can bake onto the MAF causing it to malfunction. In any case, if you're looking for a new one, check out our website at www.rockauto.com to find the best prices.
Thanks for looking,
Justin
Thanks for looking,
Justin
Senior User
Joined: Nov 2004
Posts: 357
Likes: 0
From: Lancaster, PA
Clean your throttle body, thats not the problem but it will help. As a last ditch effort, unplug the sensor and drive, it should drive a lot better with the senor unplugged if the MAF is the problem. It will go into back-up mode........However on a more negative note... DO NOT UNPLUG YOUR BATTERY ... You erased all your long term fuel trims and at the same time lost all your monitors.. On an OBD 2 equiped vehicle unplugging the battery is not a corrective procedure. You just make things worse.
