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95 head on 98 block

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Old Oct 4, 2010 | 06:29 PM
  #16  
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From: Virginia Beach
Year: 1991
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Did it. It runs better but the start up idle is still weird?
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Old Oct 4, 2010 | 06:42 PM
  #17  
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From: Maine
Year: 1991 Laredo
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Engine: 4.0L H.O.
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Just my 2 cents, maybe try some flushes, additives, seafoam? I did all of the above after a headgasket replacement and have had good luck so far. Perhaps its a bigger issue, but it could never hurt.
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Old Oct 4, 2010 | 06:52 PM
  #18  
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I think seafoam is my next try but it can't be to serious cuz i just drove the thing 40 miles and it got the best milage ever and did great lots of power
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Old Oct 5, 2010 | 05:11 AM
  #19  
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Anyone else have an idea?
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Old Oct 5, 2010 | 07:00 AM
  #20  
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Oh yea and it only idles low when u start it and i u wait like two mins it goes up to 600rpm which is what it should be
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Old Oct 5, 2010 | 12:18 PM
  #21  
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?
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Old Oct 5, 2010 | 12:27 PM
  #22  
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Try cleaning the Iac unit and the whole throttle body,when was the last fuel filter change?
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Old Oct 5, 2010 | 01:21 PM
  #23  
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From: Glen Burnie, MD
Year: 1994
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Engine: 4.0 H.O. K&N, Borla headers, custom down pipe, magnaflow hi-flo cat, flowmaster to turn down tip
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check your fuel pressure at start up, might be a little low. also i would unplug the computer, spray it out with electrical cleaner then plug it back in. start her up and should be good to go...hopefully.
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Old Oct 5, 2010 | 03:30 PM
  #24  
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Filter is brand new.
Originally Posted by rich
Try cleaning the Iac unit and the whole throttle body,when was the last fuel filter change?
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Old Oct 5, 2010 | 03:31 PM
  #25  
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Ill try that but i think im gonna try seafoam first.
Originally Posted by trans_am7935
check your fuel pressure at start up, might be a little low. also i would unplug the computer, spray it out with electrical cleaner then plug it back in. start her up and should be good to go...hopefully.
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Old Oct 8, 2010 | 04:01 PM
  #26  
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Seafoam helpped while driving and the computer thing didn't do **** i need help!

Originally Posted by johns91xj
Ill try that but i think im gonna try seafoam first.
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Old Oct 8, 2010 | 05:45 PM
  #27  
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Fixed it! Runs great! Stupid map sensor vacuum tube was unplugged haha. Thanks for ur time everyone
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