HIGH IDLE ISSUE AND INTERMITTENT SHIFTING CAUSE IAC, TPS?

  • Tiny
  • dlvaughn1963
  • Member

Will let you know definitely tomorrow. The PVC connector end looks like a plug boot cover that was put at the end of the tube. It also causes a whistling sound I think the boot that was used I too soft and causes the "cap" to collapse hense the horrible sound in the engine compartment.

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Wednesday, September 26th, 2012 AT 8:26 PM
  • Tiny
  • saturntech9
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  • 28,839 posts

That sounds like a good start keep me posted.

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Wednesday, September 26th, 2012 AT 8:39 PM
  • Tiny
  • dlvaughn1963
  • Member

Replaced PVC tube, idle is much better. Computer must still be learning fuel mixtures and shifting is much better with some sluggishness. The old hose was loose on the vac connector from the vap solenoid. Will see how things work out after a few trips. I do still wonder about the IAC. The maintenance manual shows the removed position of the actuator so ill look into that next b

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Thursday, September 27th, 2012 AT 5:46 PM
  • Tiny
  • saturntech9
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Try taking the negative battery cable off for about a min then put it back on and see how it works then.

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Thursday, September 27th, 2012 AT 6:03 PM
  • Tiny
  • dlvaughn1963
  • Member

Codes cleared still high. Will look at possible bad IAC

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Thursday, September 27th, 2012 AT 10:49 PM
  • Tiny
  • saturntech9
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Have we looked for more vacuum leaks?What about the coolant temp sensor have. We looked at that yet?

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Thursday, September 27th, 2012 AT 11:07 PM
  • Tiny
  • dlvaughn1963
  • Member

Coolant temp is relative to engine performance. The temp at the moment never goes over half way

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Friday, September 28th, 2012 AT 12:23 AM
  • Tiny
  • saturntech9
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  • 28,839 posts

I have seen cars with no symptoms of overheating etc with a failing coolant temp sensor causing a high idle.

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Friday, September 28th, 2012 AT 1:19 AM
  • Tiny
  • dlvaughn1963
  • Member

Ok will look at that next

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Friday, September 28th, 2012 AT 1:41 AM
  • Tiny
  • dlvaughn1963
  • Member

The codes did clear when I disconnected battery but did come back. I suspect the bank1 o2 is still bad cause the fuse is again blown. This o2sensor is not easy to get to unless I pull the ignition control module and coils.

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Friday, September 28th, 2012 AT 1:43 AM

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