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just started running rough

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Old Sep 9, 2003 | 09:39 PM
  #1  
datekm's Avatar
datekm
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Angry just started running rough

My B2 was running fine until just the other day when it started acting up. When I first start it up it will stall the first couple of times. when it does stay running it runs real rough and every once in awhile it will rev up like nothings wrong for about 10 secs the go bak to running rough. here's what I've done so far: new cap & rotor plugs and wires, new O2 sensor, new air filter the oil was changed a day before it acted up also flushed and changed the antifreeze. getting fed up, any help would be great. BTW it's an 88 B2 4x4 with 97500 miles.
 
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Old Sep 9, 2003 | 09:59 PM
  #2  
knucklehead11's Avatar
knucklehead11
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From: Austin
just started running rough

My only other guess could possibily be something with the fuel? I dunno though, I don't know much about it... just my guess...
 
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Old Sep 10, 2003 | 10:44 AM
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Ken00's Avatar
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From: South Jersey
just started running rough

Welcome to FTE!!!

I would start by pulling the codes and testing the fuel pressure.
 
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Old Sep 10, 2003 | 11:24 AM
  #4  
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datekm
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just started running rough

it runs good down the highway and when i first come to a stop, after i sit for about 30secs or so it will start sputtering and surging.
 
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Old Sep 10, 2003 | 01:52 PM
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Ken'56F100
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From: Renton, WA
just started running rough

Too much fuel at idle??? Check the fuel pressure regulator.
 
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Old Sep 10, 2003 | 03:17 PM
  #6  
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just started running rough

A good cleaning of the idle air control (IAC) and the throttle plate/body can't hurt. Pay special attention to the little slots in the "bore" of the throttle body.
 
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Old Sep 10, 2003 | 07:59 PM
  #7  
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datekm
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just started running rough

Well after going back to basics and checking again for vaccum leaks, it smoothed out when i pulled the MAP sensor vaccum hose
and 1 new MAP sensor later its purring smooth at idle again. thanks for all the input.
 
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