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as soon ad closed loop engages. i loose my connection with the scanner.

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Old Oct 7, 2008 | 10:58 PM
  #1  
BigBoi4Lyph's Avatar
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From: Washington
Car: 89 Iroc
Engine: 5.7 TPI
Transmission: 700r4
Axle/Gears: 9 bolt Borg Warner Disk Brake Posi
as soon ad closed loop engages. i loose my connection with the scanner.

so when i hook up and otc scanner to my 87 iroc 5.7 tpi i have data and can read codes in open loop as soon and it goes to closed loop i mean right as it changes i lose all data and cant even read codes on the scanner.

im thinking literly the only thing that can cause this is the ecm itself?

and input will help.
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Old Dec 2, 2008 | 03:22 PM
  #2  
BigBoi4Lyph's Avatar
Thread Starter
Member
 
Joined: Aug 2006
Posts: 248
Likes: 0
From: Washington
Car: 89 Iroc
Engine: 5.7 TPI
Transmission: 700r4
Axle/Gears: 9 bolt Borg Warner Disk Brake Posi
Re: as soon ad closed loop engages. i loose my connection with the scanner.

hey i could really use any and all input on this situation. ive yet to ben able to aquire a pcm or prom to swap and try it out. but it still will not read data once the pcm switches to closed loop.

but when the car is cold it will read codes/ data untill closed loop arrives.

literly the only thing that could posibly cause this is the pcs itself correct?
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