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Please Help! What else can it be?

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Old Jul 13, 2008 | 04:16 PM
  #1  
mouthforcombat's Avatar
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Joined: Jul 2007
Posts: 137
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From: Minneapolis, MN
Car: '86 Iroc Z
Engine: 305 TPI
Transmission: 700r4
Please Help! What else can it be?

305 TPI, slightly over 100,000 miles. Runs lean and knocks can be heard over my shorty headers and flowmaster exhaust. Will not hold an idle when coming to a stop. Feels like power surges too, when I have pedal down quite a bit it will quick in and launch me after waiting a few seconds. Very erratic. When I reset the computer it idles just fine for about a few minutes then the idle drops and requires double peddling when coming to stops.

I've replaced the IAC, the TPS (correctly adjusted), 02 Sensor, MAF Sensor, Coolant Temp Sensor. New fuel filter, new injectors, new harmonic balancer, new timing gear/chain, new spark plugs & wires, new disty cap, new disty rotor, heads were recently serviced and cleaned. I also used throttle body cleaner and spray where the IAC plugs in to and the rest of the throttle body.

I'm not getting any codes, I eliminated the AIR system, cat, and A/C. PLEASE help I am at my wit's end with this project and do not want to take out a loan for another vehicle. This car was running just fine until a month ago.

Would a bad knock sensor cause this, while not throwing a code?
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Old Jul 14, 2008 | 04:46 PM
  #2  
mouthforcombat's Avatar
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Member
 
Joined: Jul 2007
Posts: 137
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From: Minneapolis, MN
Car: '86 Iroc Z
Engine: 305 TPI
Transmission: 700r4
Re: Please Help! What else can it be?

Anyone? Bad Rocker Arms? Bad Knock Sensor? Worn Cam? Please, any ideas will be very helpful.
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Old Jul 14, 2008 | 06:06 PM
  #3  
shingadaddy's Avatar
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Joined: Jul 2008
Posts: 42
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From: Oklahoma
Car: 91 Z.
Engine: 5.7 TPI
Re: Please Help! What else can it be?

<<<E.G.R.>>>
<<<P.C.V.>>>
<<<knock sensor possibly>>>

CODE READER for dynamic readout?
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