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Old Sep 21, 2010 | 08:06 PM
  #16  
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Originally Posted by limegreentj
i can almost guarantee you its a vac leak
As in the vac line?
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Old Sep 21, 2010 | 08:12 PM
  #17  
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Originally Posted by RoyalXJ
3k idle? sounds like a blown intake gasket to me.
Even with 106000 mi? I'm thinking this is the 100000 mi BS and not a beginning to a series of events. People put insane mileage on these! Plus, this bastage has made me shed blood......AGAIN!
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Old Sep 21, 2010 | 08:23 PM
  #18  
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yeah it happens. can happen with less. ever over heated it?
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Old Sep 21, 2010 | 08:35 PM
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while that makes sense, a blown intake gasket is pretty unlikely, since they are a steel mesh like gasket, that kind of crushes...if you havent done any intake/exhaust manifold removal thats probably not the problem. if you go out to your jeep and pull the vac hose off your brake booster it'll rev up that high. which leads me to believe its a vac leak.
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Old Sep 21, 2010 | 08:38 PM
  #20  
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Originally Posted by STROMVADER
As in the vac line?
there are a few different vac lines attached to the intake..there is a small (about 1/8th inch diameter) black plastic like line....it could be cracked....there are 2 more rubber hoses (about 3/8ths or so thick) and there is the one going from the brake booster to the intake...its probably not that one, but its probably going to be one or more of those 3
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Old Sep 21, 2010 | 08:43 PM
  #21  
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start the damn engine, and spray throttle body cleaner around the intake, when the idle changes that is where the leak is. Short and simple, works everytime
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Old Sep 21, 2010 | 08:43 PM
  #22  
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Originally Posted by RoyalXJ
yeah it happens. can happen with less. ever over heated it?
Not to the point it died. Temp gauge shot up and I shut it down. Aux fan was shot. I pulled the brake booster line and the rpm shot up. On the vac line, what gets replaced?
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Old Sep 21, 2010 | 08:58 PM
  #23  
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Originally Posted by tiwvr1
start the damn engine, and spray throttle body cleaner around the intake, when the idle changes that is where the leak is. Short and simple, works everytime

no need to be so up front about it. maybe he didnt know that...and i forgot to mention it...lol
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Old Sep 21, 2010 | 09:35 PM
  #24  
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Originally Posted by tiwvr1
start the damn engine, and spray throttle body cleaner around the intake, when the idle changes that is where the leak is. Short and simple, works everytime
I already tried that. No need to be a d bag.
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Old Sep 21, 2010 | 11:33 PM
  #25  
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I've tried all of the above suggested fixes with no luck. I don't want to take it to a mechanic, but need it running by 2p tomorrow. Not sure what to do at this point.
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Old Sep 22, 2010 | 12:57 AM
  #26  
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Would bad injectors cause a high idle?
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Old Sep 22, 2010 | 07:30 AM
  #27  
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Originally Posted by STROMVADER
I have a new IAC, new TPS. The MAP sensor is on the side of the throttle body with a little tube correct? Your sig line adds to your credibility.
No the vac line goes up to a bracket at the top of the firewall behind the TB. That sensor is the MAP.

Originally Posted by STROMVADER
New IAC, new TPS, new MAP and it still idles @ 3000rpm. I'm ready to cliff this thing into a river! I am seriously out of any answers. I dont see any signs of the vacuum line leaking. The line towards the front of the motor just goes to the air cleaner and thats not clogged. Could the vacuum line be bad and I cant see it?
Check all the vac fittings and every part of the line

Injectors is a possibility, Id go ahead and check them along with the Fuel pressure regulator, alternator and reset the PCM. If the fuel pressure is to low the ECU would raise the idle speed to accomodate. If the alternator is going bad the computer could attempt to make it idle higher to achieve the correct power output.

Last edited by Diesel; Sep 22, 2010 at 07:33 AM.
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Old Sep 22, 2010 | 08:37 AM
  #28  
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Originally Posted by Diesel
Unlikely.

Clean/Change IAC, MAP Sensor, Vac Line.

maybe. but it did happen to me couple years ago.
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Old Sep 22, 2010 | 08:42 AM
  #29  
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I didnt straight up say no, just unlikely.
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Old Sep 22, 2010 | 10:27 AM
  #30  
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Originally Posted by STROMVADER
It just gave a generic code. No numbers unfortunately.
I don't get this. An OBDII code is a number. Not trying to be a PITA but it may help figure out the problem.

I hate to say it, but it sounds vacuum-y to me as well. The rubber boots can start to deteriorate, and I think Ive seen the hard plastic ones that like to snap in half develop cracks down the length of the line, making it hard to spot.
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