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Cold Bog Question?

  • Thread starter Thread starter MY 85 GT
  • Start date Start date Mar 2, 2015

MY 85 GT

10 Year Member
Mar 7, 2008
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Mar 2, 2015
#1
  • Mar 2, 2015
  • #1
I had this bog in my turbo FOX...that was there when cold and even when it warmed up thanks to Nick 84Ttop...he gave me some great info,,I took my Pro-M maf cleaned it re-installed it...car runs like a raped ape again...but i did notice the next day when the car was cold TEMP wise under 180 degrees the bog was there...once the car warmed up like 180 and above..it runs awesome again...any ideas what might be causing this?....i know it needs plugs...it has a brand new TPS,IAC, new wires,cap, rotor,coil.TFI module...just curious what might be causing this...Thanks....
 

jrichker

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Mar 3, 2015
#2
  • Mar 3, 2015
  • #2
Codes? That's the best place to start.
 

MY 85 GT

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Mar 3, 2015
#3
  • Mar 3, 2015
  • #3
Havent checked it yet..im thinking it might be a bad ECT sensor...because it does it cold not hot...but i will pull codes...
 

TOOLOW91

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Mar 3, 2015
#4
  • Mar 3, 2015
  • #4
Bad ECT sensor would make that thing run all types of f'd up . I had that issue with mine it would have super high idle trying to make it get to temp, buck and surge and run horrible at cruise .

And that's one thing i love about the PMS. You can see all the sensors real time so it makes troubleshooting the car super easy. Be it 02 , ECT, ACT, Mass air voltage ETC . That thing maybe ancient technology but it works.
 
Last edited: Mar 3, 2015
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MY 85 GT

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Mar 4, 2015
#5
  • Mar 4, 2015
  • #5
Ok Jeff is that hard to replace and where should i order a new one from?
 

TOOLOW91

If you're the village idiot what's that make me?
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#6
  • Mar 4, 2015
  • #6
MY 85 GT said:
Ok Jeff is that hard to replace and where should i order a new one from?
Click to expand...
located in the heater tube that runs to the heater core right in the front . Takes 2 mins to change


Sent from my iPhone using my fingers while my auto correct makes me seem illiterate

That's the sensor
 
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MY 85 GT

10 Year Member
Mar 7, 2008
1,852
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New Jersey
Mar 4, 2015
#7
  • Mar 4, 2015
  • #7
Ok cool i will pick one up this weekend and give it a try....thanks
 
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madspeed

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Mar 5, 2015
#8
  • Mar 5, 2015
  • #8
dude, pull yer codes before throwing parts at it. If the ECT is bad, the codes will reflect that
 

liljoe07

5 Year Member
Feb 18, 2009
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Mar 6, 2015
#9
  • Mar 6, 2015
  • #9
I agree, but there are times when a faulty ECT sensor wont show up in a code scan. So even if there are no ECT codes, its good practice to check the sensors resistance with a meter and compare them to stock values based on the current temperature.
 
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MY 85 GT

10 Year Member
Mar 7, 2008
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New Jersey
Mar 6, 2015
#10
  • Mar 6, 2015
  • #10
I have no idea how old the ECT sesnor is for $20 bucks i figured i will replace it..everything else is new..TPS,IAC,cap,rotors,wires,TFI module,Coil,o2s, the only thing i didnt change was the spark plugs yet....
 

89oem

Mustang Master
Dec 18, 2013
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Mar 6, 2015
#11
  • Mar 6, 2015
  • #11
*while your at it...
 

addermk2

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#12
  • Mar 7, 2015
  • #12
If the components are good, suspect your tune.
 
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