IAC, TPS, CPK, MAP: Failure symptoms of each - JeepForum.com

 
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post #1 of 1 Old 01-28-2013, 04:27 PM Thread Starter
OnTheFence
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Join Date: Oct 2012
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IAC, TPS, CPK, MAP: Failure symptoms of each

These are 4 parts that seem to be often be culprits of poorly running XJ's:
  1. IAC motor (Idle Air Control)
  2. TPS (Throttle Position Sensor)
  3. CPK (Crank Position Sensor)
  4. MAP sensor (Manifold Air Pressure)

For each one, what are the major symptoms when each of these fails?
Bad idle, rough idle, no start, cuts off, etc.

In other words, can we make a quick cheat sheet of symptoms each will exhibit when they fail?

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