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  #16  
Old 09-01-2014, 11:19 AM
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This dude says the same thing as my book
How to Clean and Test your IAC - FSB Forums
 
  #17  
Old 09-01-2014, 11:21 AM
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Originally Posted by gammatino
The varible ground on the iac is blue and white and I traced backed to the fire wall before it goes in the computer. and tested there to make sure it wasnt a faulty wire, In my book they
show the positive side of the iac jumping off the fuel injectors. But I am
still only getting .01 volts at the Iac?
The 361 red wire goes to a lot of places including all the fuel injectors and the computer.
 
  #18  
Old 09-01-2014, 11:23 AM
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Originally Posted by gammatino
This dude says the same thing as my book
How to Clean and Test your IAC - FSB Forums
He must have been reading your book and would make them both wrong.
 
  #19  
Old 09-01-2014, 11:25 AM
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Why dont you jump out there and probe that 94. Laughing. Just kiding.
You mean I cant trust the holy haynes book
 
  #20  
Old 09-01-2014, 11:28 AM
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I would not trust anything in that haynes book other than maybe to start a fire with it.
 
  #21  
Old 09-01-2014, 11:35 AM
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Look the wire going back to the computer from the IAC will have what ever voltage on it that the computer does not ground away. It is actually a variable pulse width, the width would depend on a lot of things so no body can tell you what the voltage is at that point. It would also depend on your type of meter and how fast it is.
 
  #22  
Old 09-01-2014, 11:38 AM
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Replaced it.2wice. Think I have the old one. Could swap it out.
 
  #23  
Old 09-01-2014, 07:59 PM
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I wouldn't throw any more coin at it till you get the DTC's. Data Trouble Codes. I could be anything from HEGO sensor to low signal from EVP. From what iv'e seen of bad IAC it'll idle erratically.
 
  #24  
Old 09-01-2014, 08:37 PM
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Sounds to me like its fine mostly questioning his readings. Looking to the IAC as possible cause of the flat spot hesitation mentioned.

Only issue I see is low engine vac, based on comment made sounds like would benefit from having the base timing checked/set.

Low vacuum reading suggests late timing, might not take out all the flat spot/hesitation complains of when cold but if it is late enough base timing to cause idle at 16hg engine vac no other cause? doing so would be a huge improvement.
 
  #25  
Old 09-02-2014, 08:41 PM
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Would a bad Air Charge Temp (ACT) sensor cause cold/hot start problems?
 
  #26  
Old 09-03-2014, 06:48 AM
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Originally Posted by danr1
Sounds to me like its fine mostly questioning his readings. Looking to the IAC as possible cause of the flat spot hesitation mentioned.

Only issue I see is low engine vac, based on comment made sounds like would benefit from having the base timing checked/set.

Low vacuum reading suggests late timing, might not take out all the flat spot/hesitation complains of when cold but if it is late enough base timing to cause idle at 16hg engine vac no other cause? doing so would be a huge improvement.
Maybe the timing chain? It has 5 degrees of slack in it. Right on the border
line of replace from what I understand?
 
  #27  
Old 09-03-2014, 04:41 PM
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Think I found it The thermactor bybass valve 1/4 nipple was broke off. I got
some jb weld and glued it. I HOPE IT HOLDS.i DRILLED IN ALITTLE AND COUNTER SUNK IT.
i USED THE JB WELD CAUSE OF THE HEAT. i DONT KNOW IF IT GLUES PLASTIC.
i LL LET IT SIT OVER NIGHT AND PLUG IT IN. wHAT A PAIN.hOPE THATS IT?
 
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