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2.9L & 3.0L V6 Tech General discussion of 2.9L and 3.0L V6 Ford Ranger engines.

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Old 07-12-2016
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I am: Steve Long
Join Date: Jun 2016
Location: New Orleans
Vehicle: 2007 ford Ranger
Drive Type: 4x2
Engine: 3.0
Posts: 4
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2007 ECM

Is there a way to test your ECM to see if it is whats wrong with my truck?
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Old 07-13-2016
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I am: Ron Dean
Join Date: Jan 2014
Location: Vancouver, BC
Vehicle: 1994 Ford Ranger
Drive Type: 4x4
Engine: 4.0
Posts: 4,749
Total Props: 88
Welcome to the forum.

No, there is no test for a computer, ECM, PCM, ECU.

They do run a self test when they power up each time you turn on the key.
CEL(check engine light) comes on for that self test, then will go off after engine starts if it passes the tests.
There are also some codes that will indicate internal computer issues.

Also if you hook up an OBD2 code reader/scanner and you can read codes and see live data then computer is working OK

As far as computer problems go, 99.999% of engine trouble will not be computer related, so long long shot.

90% of engine issues will be mechanical, not related to sensors or computer.
Vacuum leaks top the list when a vehicle approaches 10 years old
Wiring is also common issue as vehicle gets older
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